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The epidermis in a dorsiventral leaf (...

The epidermis in a dorsiventral leaf
(a) Covers both adaxial and abaxial surfaces
(b) Is not covered by cuticle
( c) Bears more stomata on the upper side
(d) May even lack stomata on the upper side
Which of the above statements are correct?

A

(a) and ( c)

B

(b) and (d)

C

(a) and (d)

D

(b) and (c )

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The correct Answer is:
To determine which statements about the epidermis in a dorsiventral leaf are correct, let's analyze each statement step by step. ### Step-by-Step Solution: 1. **Understanding Dorsiventral Leaves**: - Dorsiventral leaves are typically found in dicotyledonous plants. They have two distinct surfaces: the upper side (adaxial) and the lower side (abaxial). 2. **Analyzing Statement (a)**: "Covers both adaxial and abaxial surfaces" - The epidermis indeed covers both the upper (adaxial) and lower (abaxial) surfaces of the leaf. - **Conclusion**: This statement is **correct**. 3. **Analyzing Statement (b)**: "Is not covered by cuticle" - The epidermis of leaves is usually covered by a cuticle, which is a waxy layer that helps prevent water loss. - **Conclusion**: This statement is **incorrect**. 4. **Analyzing Statement (c)**: "Bears more stomata on the upper side" - In dorsiventral leaves, stomata are generally more abundant on the abaxial (lower) surface rather than the adaxial (upper) surface. - **Conclusion**: This statement is **incorrect**. 5. **Analyzing Statement (d)**: "May even lack stomata on the upper side" - It is possible for the upper side (adaxial) of a dorsiventral leaf to have very few or even no stomata, as most stomata are located on the lower side (abaxial). - **Conclusion**: This statement is **correct**. ### Final Answer: The correct statements about the epidermis in a dorsiventral leaf are (a) and (d).
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AAKASH INSTITUTE ENGLISH-ANATOMY OF FLOWERING PLANTS -ASSIGNMENT SECTION A (OBJECTIVE TYPE QUESTIONS)
  1. The central most portion of stem of dicotyledonous plants is occupied ...

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  2. Which of the following is not true for the vascular bundles of monocot...

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  3. The epidermis in a dorsiventral leaf (a) Covers both adaxial and aba...

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  4. Choose correct option w.r.t. spongy mesophyll in dicot leaf.

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  5. The size of vascualr bundles in a dorsiventral leaf is dependent on

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  6. The stomata in an isobilateral leaf

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  7. During water stress, the bulliform cells (a) Become turgid (b) Bec...

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  8. The tissue which participate in the secondary growth is

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  9. The infrascicular cambium

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  10. The cambial ring is generally (Option 1) More active on the inner s...

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  11. In a dicot stem, the interfasicular cambium strip arises

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  12. Wood is

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  13. An annual ring is formed by

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  14. Growth rings are well marked in trees growing in

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  15. Which of the following is the function of heartwood?

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  16. The heartwood cannot conduct water because of

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  17. Besides phellem, phellogen, root periderm comprises of

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  18. The feature which is common to both heartwood and sapwood is

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  19. In a plant organ which is convered by periderm and in which the stomat...

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  20. Bark refers to all tissues exterior to the

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