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1. The outermost protective covering of a plant body is called
A. Xylem
B. Phloem
C. Epidermis
D. Cork
2. The main function of the epidermis is to
A. Conduct water
B. Provide protection
C. Store food
D. Help in photosynthesis
3. The epidermis is usually made up of
A. Dead cells
B. One layer of living cells
C. Multiple layers of dead cells
D. Lignified cells
4. In plants living in dry habitats, the epidermis is
A. Thinner
B. Thicker
C. Absent
D. Spongy
5. The outer surface of aerial plant parts is covered by
A. Cutin
B. Suberin
C. Lignin
D. Pectin
6. The protective outer coating of leaves and stems is called
A. Cork
B. Cuticle
C. Phloem
D. Collenchyma
7. The small pores present in the epidermis of leaves are called
A. Trichomes
B. Stomata
C. Lenticels
D. Pits
8. The opening and closing of stomata are controlled by
A. Epidermal cells
B. Guard cells
C. Phloem cells
D. Cork cells
9. The function of stomata is
A. Photosynthesis
B. Transpiration and gaseous exchange
C. Food storage
D. Absorption of minerals
10. The epidermal cells of roots help in
A. Transport of food
B. Water absorption
C. Photosynthesis
D. Strengthening
11. Epidermal cells of roots have
A. Lenticels
B. Root hairs
C. Cutin coating
D. Suberin layers
12. The thick, waxy coating on desert plant epidermis is composed of
A. Cutin
B. Suberin
C. Lignin
D. Pectin
13. As plants grow older, epidermis is replaced by
A. Xylem
B. Cork
C. Phloem
D. Collenchyma
14. The cells of cork are
A. Living and thin-walled
B. Dead and compactly arranged
C. Large with vacuoles
D. Loosely packed and green
15. The walls of cork cells contain
A. Lignin
B. Cutin
C. Suberin
D. Cellulose
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