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Leaves are the organs of photosynthesis. The following diagram shows what happens in a plant leaf during photosynthesis.

      

Leaves are the organs of photosynthesis. The following diagram shows what happens in a plant leaf during photosynthesis.
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a) Give two ways in which leaves are adapted to absorb light.
b) Name the gases labeled X and Y
c) Explain why it is an advantage for plant to store carbohydrates in form of starch rather than as sugar.
d) Describe what happens during dark stage of photosynthesis.

  

Answers


sharon
a) Broad lamina /thin lamina to increase surface area for maximum absorption of light /reduce distance for penetration of
light to photosynthetic cell
- transport cuticle epidermal cell to allow penetration of light to photosynthetic cell.-palisade cells are closely packed and
vertically elongated to allow many to be packed beneath the upper epidermal to absorb light.
b) X- Carbon (IV) Oxide
Y – Oxygen
c) Starch is insoluble in water hence osmotically inactive reducing effects of absorption of water by osmosis
d) Process involves reaction of Carbon (IV) oxide with hydrogen atoms simple sugars /glucose this involves a series of enzyme controlled reactions the energy required for the process is provided by ATP from light stage other products of dark stage are fatty acids /amino acids.
sharon kalunda answered the question on September 17, 2019 at 14:16


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