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Question
The figure below represents the vertical section of a leaf:
(i) Name the parts 1 to 5.
(ii) How many veins have been shown?
(iii) State the functions of parts 4 and 5.
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Solution
(i)
- Cuticle
- Upper Epidermis
- Palisade tissue/chloroplast
- Xylem
- Stomata
(ii) One vein has been shown.
(iii) Xylem – helps in the conduction of water.
Stomata – through which exchange of gases takes place.
RELATED QUESTIONS
Choose the correct answer:
Photosynthesis is more active in ___________
During photosynthesis, the oxygen in glucose comes from
Name the following:
The first form of food substance produced during photosynthesis.
A candidate studied the importance of certain factors in photosynthesis. He took a potted plant and kept in the dark for over 24 hours. In the early hours of the next morning, he covered one of the leaves with black paper in the centre only. Then he placed the plant in sunlight for a few hours and tested the leaf which was covered with black paper for starch.
Describe step by step, how the candidate proceeded to test the leaf for the presence of starch?
Give technical term:
The part of the chloroplast where the dark reaction of photosynthesis takes place.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Leaves are broad and flat to increase the surface area for photosynthesis.
During photosynthesis, ________ is produced and stored in the leaf.
Mesophyll contains chlorophyll.
Only green plants have the unique capacity to release ______ into the atmosphere.
Assertion (A): All food chains begin with herbivores.
Reason (R): Green plants are heterotrophs.
