{"content":{"sharePage":{"page":0,"digests":[{"id":"40956013","dateCreated":"1311231177","smartDate":"Jul 20, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"},"monitored":false,"locked":false,"links":{"self":"https:\/\/biologyunit2-tsc.wikispaces.com\/share\/view\/40956013"},"dateDigested":1531983374,"startDate":null,"sharedType":"discussion","title":"Question 14","description":"In an investigation of the rate of water transpiration and absorption in a plant over four-hourly periodson a summer's day, the following measurements were made.
\n
\nAt what time did maximum absorptions and transpiration occur?","replyPages":[{"page":0,"digests":[{"id":"40956035","body":"OK- this question requires graphs
\n1) water absorbed against time (time on x axis)
\n2) water transpired against time
\n
\nYou will need to do this in you books with your summary rather then here for obvious reasons.","dateCreated":"1311231313","smartDate":"Jul 20, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"}},{"id":"41288469","body":"An important note about transpiration-
\nmovement of water up through the plant has a lot to do with surface tension- that is that water molecules are strongly attracted to each other- so as water evaporates out of the leaf, water is pulled up through the xylem of the plant.
\n
\nThis link is a bit dorky, but quite useful all the same.
\n
\nhttp:\/\/www.youtube.com\/watch?v=U4rzLhz4HHk<\/a>","dateCreated":"1312890291","smartDate":"Aug 9, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"}}],"more":0}]},{"id":"40955983","dateCreated":"1311231006","smartDate":"Jul 20, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"},"monitored":false,"locked":false,"links":{"self":"https:\/\/biologyunit2-tsc.wikispaces.com\/share\/view\/40955983"},"dateDigested":1531983374,"startDate":null,"sharedType":"discussion","title":"Question 13","description":"In an experiment to investigate the impact of the different water content in plant cells, two similar pieces of potato were set up as shown in figure 10.53 (page 339).
\n
\na) Explain what has happened with regard to water movement and content in potato chip A.
\n
\nb) Explain what has happened with regard to water movement and content in potato chip B.","replyPages":[{"page":0,"digests":[{"id":"41037123","body":"a)in the diagram potato chip a is in distilled water after 24 hours nothing has changed in the chip.
\n
\nb) in the diagram potato chip b is in the sucrose water and the chip has wittled and become soft","dateCreated":"1311653005","smartDate":"Jul 25, 2011","userCreated":{"username":"TSCFAG0001","url":"https:\/\/www.wikispaces.com\/user\/view\/TSCFAG0001","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41037145","body":"in the potato chip A diagram, the chip is in distilled water, after 24hours the chip has stayed the same, nothing has changed to the chip.
\n
\nIn potato chip B the chip is put into the glass with 20% sucrose solutation and left for 24hours, 24 hours later the chip has dissolved or crinkled down to nothing.","dateCreated":"1311653100","smartDate":"Jul 25, 2011","userCreated":{"username":"TSCTAY0008","url":"https:\/\/www.wikispaces.com\/user\/view\/TSCTAY0008","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41037325","body":"a) In this diagram, the chip is in distilled water (plain water) and after 24 hours the chip has stayed the same because plain water doesn't affect the chip at all.
\nb) In this diagram, we see the chip is put in a glass containing 20% sucrose solution. Like chip A, it's left for 24 hours, but because the water is mixed with sucrose, the chips reacts with the sucrose making it shrivel or shrink down to basically nothing.","dateCreated":"1311653868","smartDate":"Jul 25, 2011","userCreated":{"username":"JoshuaCrothers","url":"https:\/\/www.wikispaces.com\/user\/view\/JoshuaCrothers","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41037599","body":"A. In the potato chip A diagram, the chip in the distilled water, after 24 hours the chip has still not changed and stays the same.
\n
\nB. In this diagram the chip is put in a glass that contains 20% surcose solution. Its left for 24 hours but the water is mixed with surcose so the chips reacts with the surcose making it shrink down to pretty much nothing.","dateCreated":"1311655394","smartDate":"Jul 25, 2011","userCreated":{"username":"OptimusPrime-ZP","url":"https:\/\/www.wikispaces.com\/user\/view\/OptimusPrime-ZP","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}}],"more":0}]},{"id":"40955963","dateCreated":"1311230781","smartDate":"Jul 20, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"},"monitored":false,"locked":false,"links":{"self":"https:\/\/biologyunit2-tsc.wikispaces.com\/share\/view\/40955963"},"dateDigested":1531983375,"startDate":null,"sharedType":"discussion","title":"Question 12","description":"a) explain why most stems and leaves on plants have a waterproof cuticle and yet roots do not.
\n
\nb) When cuttings of plantsare first potted, they have no roots and may wilt. Wilting is prevented if the pot is enclosed in a plastic bag and shaded from sunlight. Explain why this treatment prevents wilting.","replyPages":[{"page":0,"digests":[{"id":"40975473","body":"a) because the roots absorb the water but if the plant was in a dry environment the plant will want to lose less water. So by having a waterproof layer on the leaves and stem there will be less water lose from teh plant.
\n
\nb) This prevents wilting because the sun cannot encourage evaporation of water out of the plant.","dateCreated":"1311306162","smartDate":"Jul 21, 2011","userCreated":{"username":"rachaelmccormack","url":"https:\/\/www.wikispaces.com\/user\/view\/rachaelmccormack","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311223385\/rachaelmccormack-lg.jpg"}},{"id":"40980027","body":"b) water lost from plant leaves is called evapotranspiration. If the leaves are enclosed in a plastic bag, the water lost will be trapped in the bag and humidity in the bag rises. As the air becomes more humid, evapotranspiration will slow.","dateCreated":"1311333166","smartDate":"Jul 22, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"}},{"id":"41036481","body":"a) the roots absorb water, but the leaves dont. there will be less water loss if the re is a waterproof layer around the leaf.
\nb) it prevents wilting because the water is trapped in the plastic bag.","dateCreated":"1311650922","smartDate":"Jul 25, 2011","userCreated":{"username":"lacey.shields","url":"https:\/\/www.wikispaces.com\/user\/view\/lacey.shields","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41036757","body":"a)The leaves dont asorb water but the roots do. There is less water loss if ther is a waterproof layer and the leaf.
\nb)It prevents wilting because the water is trapped in the plastic bag.","dateCreated":"1311651706","smartDate":"Jul 25, 2011","userCreated":{"username":"sti0003","url":"https:\/\/www.wikispaces.com\/user\/view\/sti0003","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311651410\/sti0003-lg.jpg"}},{"id":"41036831","body":"does this happen in all plants?","dateCreated":"1311652006","smartDate":"Jul 25, 2011","userCreated":{"username":"sti0003","url":"https:\/\/www.wikispaces.com\/user\/view\/sti0003","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311651410\/sti0003-lg.jpg"}},{"id":"41037459","body":"A) the roots absorb the water but the leaves do not. there is less water loss with the water proof layer on the leaf.
\n
\nB) )It prevents wilting because the water is trapped in the plastic bag.","dateCreated":"1311654435","smartDate":"Jul 25, 2011","userCreated":{"username":"TSCFAG0001","url":"https:\/\/www.wikispaces.com\/user\/view\/TSCFAG0001","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41037523","body":"A. The roots absorb water where as the leaves do not. There is less water loss with the water proof layer on the leaf.
\n
\nB. This prevents wilting because the sun cannot encourage evaporation of water out of the plant.","dateCreated":"1311654858","smartDate":"Jul 25, 2011","userCreated":{"username":"OptimusPrime-ZP","url":"https:\/\/www.wikispaces.com\/user\/view\/OptimusPrime-ZP","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}}],"more":0}]},{"id":"40955905","dateCreated":"1311230322","smartDate":"Jul 20, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"},"monitored":false,"locked":false,"links":{"self":"https:\/\/biologyunit2-tsc.wikispaces.com\/share\/view\/40955905"},"dateDigested":1531983375,"startDate":null,"sharedType":"discussion","title":"Question 11","description":"A stream of air was blown over a leafy plant growing in a well-illuminated glass chamber and well supplied with water. The temperature of the chamber was kept constant. The amount of carbon dioxide in the air was measured as it entered the chamber and as it left. The rate of water loss from the plant and stomatal aperture were also measured throughout the experiment.
\na) Explain where most of the water loss from the plant would have occurred. Would the kind of plant used make any difference to your answer.
\nb) In what directions, in or out of the plant, would carbon dioxide and oxygen move? Across what areas would the movement occur?","replyPages":[{"page":0,"digests":[{"id":"40955931","body":"c)In what way, if any, would photosynthesis in the leaf impact on carbon dioxide in the air blown over the leaf?
\n
\nd) Comment on the suggestion that id photosynthesis and respiration in the plant were equal, there would be no carbon dioxide in the air leaving the chamber.","dateCreated":"1311230486","smartDate":"Jul 20, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"}},{"id":"41037713","body":"a) in the stomata. Although some Co2 comes from respiration of cells inside the plant, it isnt enough to serve all the needs of the plant. Stomata pores allow Co2 to enter and allow H2o water vapours to exit
\n
\nc) Yes photosynthesis does affect the impact the Co2 in the air being blown on the leaf, because photosynthesis happens internally, where light becomes availiable. When the air enters the stomata, the air becomes a part of the photosynthesis process, because the higher the tempreture, the greater the amount of water will be lost. Photosynthesis causes the water and Co2 to heat up, and thus the plant loosing more water, to combat the heated condition, is affected.","dateCreated":"1311656176","smartDate":"Jul 25, 2011","userCreated":{"username":"JoshuaCrothers","url":"https:\/\/www.wikispaces.com\/user\/view\/JoshuaCrothers","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41072223","body":"the movement of carbon dioxide is dependents on concentration difference between 2 area. Carbon dioxide will diffuse from an area of high concentration to low concentration- so as the leaf absorbs carbon dioxide (as it uses it for photosynthesis) carbon dioxide in the air should move over the surface of the leaf.
\n
\nSince carrbon dioxide is produced during respiration, if photosynthesis and respiration happened at equal rates, the movement of carbon dioxide into the leaf should theoretically stop.","dateCreated":"1311803258","smartDate":"Jul 27, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"}},{"id":"41072245","body":"Plants with sunken stomata have less water loss- b\/c an environment of high humidity is created around the stomata.","dateCreated":"1311803398","smartDate":"Jul 27, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"}},{"id":"41081003","body":"oxygen is absorbed through the roots of the plant and released through the stomata in the leaves.
\n
\nCO2 is absorbed through the leaves and used in the leaves for respiration and would be transported to other areas of the plant via the phloem
\n
\nSome excess co2 could also be released through the stomata, but how mach would depend the rates of respiration and photosynthesis.","dateCreated":"1311842488","smartDate":"Jul 28, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"}}],"more":0}]},{"id":"40955845","dateCreated":"1311229776","smartDate":"Jul 20, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"},"monitored":false,"locked":false,"links":{"self":"https:\/\/biologyunit2-tsc.wikispaces.com\/share\/view\/40955845"},"dateDigested":1531983376,"startDate":null,"sharedType":"discussion","title":"Question 9","description":"Identify a physiological characteristic that assists each of the following to maintain water balance.
\na) humans on a hot day
\nb)sea birds
\nc) the tarkawarra (Notomys alexis)","replyPages":[{"page":0,"digests":[{"id":"41037317","body":"A) humans regulate the water balance in thier body on a hot day by sweating from special glads in the skin and drinking plenty of water.
\n
\nB) sea birds maintain the water balance in thier body by excreting nitrogenous waste as uric acid.
\n
\nC) the tarkawarra does not drink the seeds, insects and roots that it eats provide enough water to live on. its urine is one of the most concentrated of any mammal.","dateCreated":"1311653835","smartDate":"Jul 25, 2011","userCreated":{"username":"TSCFAG0001","url":"https:\/\/www.wikispaces.com\/user\/view\/TSCFAG0001","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41037397","body":"A. A physiological characteristic that assists a human to maintain water balance is by sweating.
\n
\nB. A physiological characteristic that assists the sea bird to maintain it's water balance is it's ability to take in salt water.
\n
\nC. A physiological characteristic that assists the tarkawarra to maintain it's water balance is for it to burrow under the ground which is more than a metre deep and therefore the temperature is much cooler from the tempertature outside the burrow.","dateCreated":"1311654086","smartDate":"Jul 25, 2011","userCreated":{"username":"mag0052","url":"https:\/\/www.wikispaces.com\/user\/view\/mag0052","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41037401","body":"A. A physiological characteristic that assists a human to maintain water balance is by sweating.
\n
\nB. A physiological characteristic that assists the sea bird to maintain it's water balance is it's ability to take in salt water.
\n
\nC. A physiological characteristic that assists the tarkawarra to maintain it's water balance is for it to burrow under the ground which is more than a metre deep and therefore the temperature is much cooler from the tempertature outside the burrow.","dateCreated":"1311654088","smartDate":"Jul 25, 2011","userCreated":{"username":"mag0052","url":"https:\/\/www.wikispaces.com\/user\/view\/mag0052","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41037427","body":"A. A physiological characteristic that assists humans to maintain water balance on a hot day is by sweating.
\n
\nB. A physiological characteristic that assists sea birds to maintain a water balance is it's ability to take in salt water.
\n
\nC. A physiological characteristic that assists the tarkawarra to maintain water balance is to burrow under the ground and it gets enough waater from seeds and roots.","dateCreated":"1311654193","smartDate":"Jul 25, 2011","userCreated":{"username":"OptimusPrime-ZP","url":"https:\/\/www.wikispaces.com\/user\/view\/OptimusPrime-ZP","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41037479","body":"A)humans sweet out of glands from the body to keep a cool temperature ao we dont over heat, also we drink a lot of water.
\n
\nB)sea birds extake nitrogenous waste to maintain a water balance.
\n
\nC)The Tarkawarra(jumping mouse) doesnt drink water as it eats its preywhich provides it with the pefect water balance.","dateCreated":"1311654589","smartDate":"Jul 25, 2011","userCreated":{"username":"TSCTAY0008","url":"https:\/\/www.wikispaces.com\/user\/view\/TSCTAY0008","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}}],"more":0}]},{"id":"40955823","dateCreated":"1311229603","smartDate":"Jul 20, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"},"monitored":false,"locked":false,"links":{"self":"https:\/\/biologyunit2-tsc.wikispaces.com\/share\/view\/40955823"},"dateDigested":1531983376,"startDate":null,"sharedType":"discussion","title":"Question 8","description":"Look at fig 10.29 on page 321. Assume a dolphin needed to lose heat. What changes would occur in the counter current exchange system to facilitate that loss?","replyPages":[{"page":0,"digests":[{"id":"41013641","body":"When the Dolphins need to loose heat their blood flows close their skin to cool down.","dateCreated":"1311551661","smartDate":"Jul 24, 2011","userCreated":{"username":"but0066","url":"https:\/\/www.wikispaces.com\/user\/view\/but0066","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41036553","body":"their blood flows close to their skin when they need to cool","dateCreated":"1311651109","smartDate":"Jul 25, 2011","userCreated":{"username":"ashleigh.samers","url":"https:\/\/www.wikispaces.com\/user\/view\/ashleigh.samers","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41036603","body":"when the dolphins need to cool down, their blood flows close to their skin.","dateCreated":"1311651252","smartDate":"Jul 25, 2011","userCreated":{"username":"lacey.shields","url":"https:\/\/www.wikispaces.com\/user\/view\/lacey.shields","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41036621","body":"what is a counter current?","dateCreated":"1311651266","smartDate":"Jul 25, 2011","userCreated":{"username":"lacey.shields","url":"https:\/\/www.wikispaces.com\/user\/view\/lacey.shields","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41134935","body":"the blood flows closer to the skin when the dolphin needs to cool down","dateCreated":"1312154396","smartDate":"Jul 31, 2011","userCreated":{"username":"TSCFAG0001","url":"https:\/\/www.wikispaces.com\/user\/view\/TSCFAG0001","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}}],"more":0}]},{"id":"40954799","dateCreated":"1311223307","smartDate":"Jul 20, 2011","userCreated":{"username":"breannameindl","url":"https:\/\/www.wikispaces.com\/user\/view\/breannameindl","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"},"monitored":false,"locked":false,"links":{"self":"https:\/\/biologyunit2-tsc.wikispaces.com\/share\/view\/40954799"},"dateDigested":1531983376,"startDate":null,"sharedType":"discussion","title":"Question 10","description":"Applying your understanding in new contexts: Air in the Antartic is relatively dry. Antartic explorers can become dehydrated relatively quickly. Explain the relationship btween these statements. How can Antartic explorers reduce the chance of dehydration?","replyPages":[{"page":0,"digests":[{"id":"41036565","body":"how can air be dry?","dateCreated":"1311651141","smartDate":"Jul 25, 2011","userCreated":{"username":"ashleigh.samers","url":"https:\/\/www.wikispaces.com\/user\/view\/ashleigh.samers","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41183167","body":"There isn't any moisture","dateCreated":"1312358013","smartDate":"Aug 3, 2011","userCreated":{"username":"breannameindl","url":"https:\/\/www.wikispaces.com\/user\/view\/breannameindl","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41288551","body":"there are a number of ways that we lose water- urine, sweat, excretion, respiration (breathing).
\nSo where the air is dry, we would expect to lose more water to the external environment when we breath.
\nExplorers should drink lots of water and could cover their mouths creating a more humid environment around their mouth.- The good old balaclava- you don't see many of them on the ski fields these days!!!
\n
\nhttp:\/\/image.rakuten.co.jp\/crues\/cabinet\/cap\/knitmask2_pr.jpg<\/a>","dateCreated":"1312890844","smartDate":"Aug 9, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"}},{"id":"41419571","body":"New question:
\nIn a humid environment would you expect high water loss?
\nHow can temperature be controlled in these environments?","dateCreated":"1313464225","smartDate":"Aug 15, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"}}],"more":0}]},{"id":"40954787","dateCreated":"1311223273","smartDate":"Jul 20, 2011","userCreated":{"username":"JoshuaCrothers","url":"https:\/\/www.wikispaces.com\/user\/view\/JoshuaCrothers","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"},"monitored":false,"locked":false,"links":{"self":"https:\/\/biologyunit2-tsc.wikispaces.com\/share\/view\/40954787"},"dateDigested":1531983376,"startDate":null,"sharedType":"discussion","title":"Q5 ","description":"Distinguishing between the following pairs
\na)CNS and PNS
\nb)sensory neuron and effector neuron
\nc) axon and dendtrite
\nd)receptor and effector organ","replyPages":[{"page":0,"digests":[{"id":"41036585","body":"what is CNS and PNS?","dateCreated":"1311651195","smartDate":"Jul 25, 2011","userCreated":{"username":"ashleigh.samers","url":"https:\/\/www.wikispaces.com\/user\/view\/ashleigh.samers","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41288571","body":"CNS- central nervous system (brain and spinal chord)
\nPNS the other nerves- sensory, motor neurons, affector\/effector neurons- that get messages to the CNS and carry out the instructions (eg. cause muscles to move)","dateCreated":"1312890958","smartDate":"Aug 9, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"}}],"more":0}]},{"id":"40954781","dateCreated":"1311223248","smartDate":"Jul 20, 2011","userCreated":{"username":"lacey.shields","url":"https:\/\/www.wikispaces.com\/user\/view\/lacey.shields","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"},"monitored":false,"locked":false,"links":{"self":"https:\/\/biologyunit2-tsc.wikispaces.com\/share\/view\/40954781"},"dateDigested":1531983376,"startDate":null,"sharedType":"discussion","title":"Question 7","description":"Many small animals that are solitary over summer tend to become social during winter and often construct nests under the snow. The temperature inside a communal nest of beavers was compared with the temperature of the putside air. The results are shown as in figure 10.52","replyPages":[{"page":0,"digests":[{"id":"41037101","body":"They live in comunal nests so they can combine body heat too keep the whole nest warm as shown by the graph in Figure 10.52","dateCreated":"1311652882","smartDate":"Jul 25, 2011","userCreated":{"username":"but0066","url":"https:\/\/www.wikispaces.com\/user\/view\/but0066","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41037403","body":"animals tend to come together in groups during winter to construct nests underground to get out of the cold and combine their body heat to keep warm","dateCreated":"1311654086","smartDate":"Jul 25, 2011","userCreated":{"username":"TSCFAG0001","url":"https:\/\/www.wikispaces.com\/user\/view\/TSCFAG0001","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41288393","body":"It is always important to mention
\n1) SA:V is decreased when animals huddle together
\n2) they create an insulating layer within the nest","dateCreated":"1312889750","smartDate":"Aug 9, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"}}],"more":0}]},{"id":"40954771","dateCreated":"1311223166","smartDate":"Jul 20, 2011","userCreated":{"username":"ashleigh.samers","url":"https:\/\/www.wikispaces.com\/user\/view\/ashleigh.samers","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"},"monitored":false,"locked":false,"links":{"self":"https:\/\/biologyunit2-tsc.wikispaces.com\/share\/view\/40954771"},"dateDigested":1531983377,"startDate":null,"sharedType":"discussion","title":"Question 6 ","description":"explain how each of the following features assist a plant to survive in very hot environments.
\na. Desert plants generally have a deeper penetration root system.
\nb. Succulant plants (that store water) have stomata that only open at night.
\nc.Some plants have special cells, called hinge cells, on one surface of their leaves that also has stomata. When hinge cells lose water, the leaf rolls up with the hinge cells on the inside of the rolled leaf","replyPages":[{"page":0,"digests":[{"id":"40976377","body":"a) the root systems penetrate further into the ground in search of an underground water source for the pant to stay alive.
\n
\nb) they only open at night so that the stomata can lose enough gases as well as gain new gases without losing to much water to the sun which would happen during the day if the stomata were to open during the day.
\n
\nc) when the elaf rolls up from losing water from the hinge cells this creates a humid chamber for the stomata, it also protects any stomata from being exposed to the external environment in which the plant is living.","dateCreated":"1311309544","smartDate":"Jul 21, 2011","userCreated":{"username":"rachaelmccormack","url":"https:\/\/www.wikispaces.com\/user\/view\/rachaelmccormack","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311223385\/rachaelmccormack-lg.jpg"}},{"id":"40980057","body":"c) by curling up, the leaf creates a humid environment around the stomata, and so water loss is slowed.","dateCreated":"1311333457","smartDate":"Jul 22, 2011","userCreated":{"username":"Angela_Schneider","url":"https:\/\/www.wikispaces.com\/user\/view\/Angela_Schneider","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311637336\/Angela_Schneider-lg.jpg"}},{"id":"41036485","body":"a. the root system goes far into the ground to search for water
\n
\nb. so the stoma can lose enough gases and gain new gases.
\n
\nc.by curling up, the leaf creates a humid environment around the stomata, and so water loss is slowed.","dateCreated":"1311650935","smartDate":"Jul 25, 2011","userCreated":{"username":"ashleigh.samers","url":"https:\/\/www.wikispaces.com\/user\/view\/ashleigh.samers","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41036573","body":"a. the root system goes further in to the ground because the water is deeper in the ground.
\nb. so the stomata can lose and gain gasses without too much exposure to the sun during the day.
\nc. water loss is slowed when the leaves curl up because they create a humid environment.","dateCreated":"1311651170","smartDate":"Jul 25, 2011","userCreated":{"username":"lacey.shields","url":"https:\/\/www.wikispaces.com\/user\/view\/lacey.shields","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}},{"id":"41036813","body":"a) The root system goes futher into the ground to reach the water.
\nb) So that the stomata can lose and gain gasses without more exposure than needed to the sun.
\nc)water loss is slowed when the leaves curl up because they create a humid environment.","dateCreated":"1311651926","smartDate":"Jul 25, 2011","userCreated":{"username":"sti0003","url":"https:\/\/www.wikispaces.com\/user\/view\/sti0003","imageUrl":"https:\/\/www.wikispaces.com\/user\/pic\/1311651410\/sti0003-lg.jpg"}},{"id":"41036937","body":"A) the Root system of desert plants penertrate deeper into the ground to reach the receding water level
\nB)So the stoma can loose and gain gasses with out more exposure to the sun than is needed
\nC) Water loss is slowed down when the leaf curles up because it makes a humid environment than will lesses evaperation","dateCreated":"1311652379","smartDate":"Jul 25, 2011","userCreated":{"username":"but0066","url":"https:\/\/www.wikispaces.com\/user\/view\/but0066","imageUrl":"https:\/\/ssl.wikicdn.com\/i\/user_none_lg.jpg"}}],"more":0}]}],"more":true},"comments":[]},"http":{"code":200,"status":"OK"},"redirectUrl":null,"javascript":null,"notices":{"warning":[],"error":[],"info":[],"success":[]}}