In conifers, transpiration is reduced due to the presence of :-(I) Needle-like leaves(II) Thin cuticle in leaves(III) Sunken stomata in leavesI onlyI and IIII and IIII and III

Select the correct statementa. During photosynthesis, oxygen is considered as an excretory product by plantsb. Stomata present are present in large numbers in the upper epidermis, that help in transpirationc. Lenticels in the leaves are specialized to eliminate oxygen, water and carbon-di-oxide.d. Resins, gums and ageing leaves are some ways by which plants excrete their waste products.only a,bonly b,donly a,donly c,d

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

Transpiration in the plants occurs through which of the following ?1 pointHydathodesEpidermisStomataleaflets

Part A. These stomata are located in the lower epidermis of two leaves. What can be concluded by comparing image X to image Y?Select one:a.X is in a leaf releasing water or oxygen. Y is in a leaf during the night.b.X is in a leaf with a waxy cuticle to prevent overheating. Y is in a leaf that needs to protect its cells from freezing temperatures.c.X is in a leaf of a plant during a drought. Y is in a leaf facilitating photosynthesis.d.X is in a leaf that needs to release excess sugars. Y is in a leaf that needs to take in carbon dioxide.QUESTION 6Question textPart B. What evidence supports your answer to Part A? [B.2H]Select one:a.Stomata open when they have made too much sugar. They close when they have enough carbon dioxide inside the leaves.b.When stomata are open, water vapor and other gases are released into the atmosphere. They close at night when photosynthesis doesn't occur.c.Stomata open to take in more water when the environment is dry. They close to enable photosynthesis to occur.d.When plants get hot, stomata open to release heat. They close to hold present cold air from entering.

Which statement is TRUE about transpiration pull?*1 pointIs an active transport.The root generates hydrostatic pressure.Xylem sap was pushed downwards.The mesophyll cells in leaves have low water potential.