Biology

Biology, 17.07.2019 04:00, emileewhitaker1373

The map suggests that traits that allow for gas exchange while limiting water loss increase fitness. in the case of plants, what would be the best measure of evolutionary fitness?

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Biology, 08.07.2019 10:30, Zaida21

The model above shows the metabolic processes occurring in green plants. plants use sunlight, plus carbon dioxide and water to produce glucose. the by-product of photosynthesis is oxygen, which is added to our atmosphere. plants also respire; creating atp, the energy they need to continue to grow, develop and reproduce. imagine it is summer; there is a drought. how will the summer drought influence the model we see here? a) in a response to the drought, stomata will open more frequently. there will be higher outputs of co2 and o2 as a result. b) an increase in temperature will cause an increase in chemical activity. there will be increases in all chemical inputs and outputs in the model. c) water will be a limiting reactant in the model. as a result, less glucose will be produced. there will be less co2 in and o2 and h2o out. eliminate d) water will be a limiting reactant in the model. there will be less h2o in through the roots and less h2o out via transpiration. the other inputs and outputs will remain constant.

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History, 09.10.2019 18:40, ScuddyG7164

How does dermal tissue plants on a hot day? it releases substances so plants can absorb more water from the soil. it has a waxy material that prevents the loss of water to the environment. it has guard cells that open to prevent the loss of water to the environment. it contains chemical substances that allow plants to produce water.

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Geography, 11.10.2019 03:00, caguil00

5. how might the fitness cost of photorespiration in c3 plants favor the evolution of ca plants? 6. how do leaf hairs that surround guard cells reduce water loss through the process of forming a boundary layer? 7. when animals hibernate, they lower their temperature. how would this reduce the rate of heat lost through conduction? 8. in addition to having highly efficient kidneys, what behaviors could you imagine desert animals using to reduce water loss? 9. if you designed an experiment to determine how temperature and the species composition of seeds affect the growth and reproduction of seed-eating birds, what would be the independent and dependent variables? 10. if you were to stand in a river with fast-moving water, which heat exchange processes might occur and why?

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Geography, 11.10.2019 03:00, Joeeeeeeee8974

Critical thinking questions 1. how do salty soils affect the matric potential and, in turn, affect root pressure and overall water uptake? 2. based on your knowledge of the relationship between volume and surface area, why do clay soils hold more water than sandy soils? 3. if you were breeding cotton plants to have increased water uptake in dry soils, you could breed plants that contain more amino acids and carbohydrates in the root cells. why would this be effective and why might crop yield be negatively affected? 4. how do cam plants solve the problem of obtaining co2 for photosynthesis while minimizing water loss? 5. how might the fitness cost of photorespiration in c3 plants favor the evolution of c4 plants? 6. how do leaf hairs that surround guard cells reduce water loss through the process of forming a boundary layer? 7. when animals hibernate, they lower their temperature. how would this reduce the rate of heat lost through conduction? 8. in addition to having highly efficient kidneys, what behaviors could you imagine desert animals using to reduce water loss? 9. if you designed an experiment to determine how temperature and the species composition of seeds affect the growth and reproduction of seed-eating birds, what would be the independent and dependent variables? 10. if you were to stand in a river with fast-moving water, which heat exchange processes might occur and why?

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