All the following regarding parenchyma tissue in plants are correct except:
1. Cells are generally isodiametric
2. Cell walls are generally thick
3. Cell walls are made of cellulose
4. They perform photosynthesis, storage and secretion
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Match each item in Column I with one in Column II and choose your answer from the codes given below:
COLUMN I |
COLUMN II |
A. Parenchyma |
a. Mechanical support to young stem and petiole |
B. Collenchyma |
b. Thin cellulosic cell walls |
C. Sclerenchyma fibers |
c. Thickened dead cells with very narrow cavities |
D. Sclereids |
d. Thick walled, elongated and pointed cells |
A | B | C | D | |
1. | a | b | c | d |
2. | b | a | d | c |
3. | b | d | c | a |
4. | d | c | b | a |
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Cuticle:
1. is a covering, both outside and inside of the epidermis
2. is well developed in roots
3. helps in prevention of water loss
4. is a proteinaceous layer
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Consider the given two statements:
I. Parenchyma cells in plants play an important role in regeneration and wound healing.
II. They are living at maturity and usually have only primary walls.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is true but II is false
4. Both I and II are false
Match the following and choose the correct option from below:
A. Meristem |
i. Photosynthesis, storage |
B. Parenchyma |
ii. Mechanical support |
C. Collenchyma |
iii. Actively dividing cells |
D. Sclerenchyma |
iv. Stomata |
E. Epidermal tissue |
v. Sclereids |
Options:
A | B | C | D | E | |
1. |
i |
iii |
v |
ii |
iv |
2. |
iii |
i |
ii |
v |
iv |
3. |
ii |
iv |
v |
i |
iii |
4. |
v |
iv |
iii |
ii |
i |
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