What happens when stomata open?Question 4Select one:a.Water vapor is lost to the external environment, increasing the rate of transpiration.b.Water vapor is lost to the external environment, decreasing the rate of transpiration.c.Water vapor enters the spaces in the mesophyll, increasing the rate of transpiration.d.Water vapor enters the spaces in the mesophyll, increasing the rate of transpiration.

The stomata in plants' leaves open and close depending on external and internal conditions. Which of the following would most likely cause the stomata to close?A.The plant is taking in too much water from the soil.B.The plant needs additional carbon dioxide for photosynthesis.C.The plant is losing too much water from transpiration.D.The plant needs additional sunlight for photosynthesis.

Transpiration is the  of water from the surfaces of mesophyll cells into the air spaces, followed by the  of water vapour through stomata.

A plant wilted but later recovered. The stoma represents cells of the plant during recovery. As the plant recovered, the rate of photosynthesis increased becauseAthe stomatal pore opened, allowing carbon dioxide to enter the leaf.Bthe wilting prevented the entry of water into the leaves.Cchlorophyll within the leaf now had access to O2 gas.Dthe temperature of the leaf was reduced.

1What is transpiration in plants?The absorption of water by the root hair cellsThe absorption of water through the leavesThe movement of water through a plant due to evaporation from the leavesThe movement of water through the phloem cells2Which substances enter and leave the plant through the stomata?Oxygen enters; carbon dioxide and water leaveCarbon dioxide and water enter; oxygen leavesWater and oxygen enter; carbon dioxide leavesCarbon dioxide enters; water and oxygen leaves3Which cells control the opening and closing of the stomata?Palisade cellsPhloem cellsGuard cellsXylem cells4What happens to the rate of transpiration when the temperature is increased?It stays the sameIt increasesIt decreasesIt stops altogether5Why does the rate of transpiration decrease in very humid conditions?Because there will be more water inside the leaf than in the air Because the rate of photosynthesis increasesBecause the rate of photosynthesis decreasesBecause there will be less water inside the leaf than in the air6Why are stomata normally found on the underside of leaves?So that they are shaded from the sunSo that they are nearer the ground So that they are protected from rainTo allow water to escape from the leaves by gravity

In which of the following is stomata partially closed during warm, dry summers to limit water loss?Group of answer choicesC3 photosynthesisCAM photosynthesisC4 photosynthesis