Q. No.Both apical meristems and intercalary meristems:-
I. Are primary meristems
II. Appear early in plant life
III. Contribute to the formation of the primary plant body
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
The most important function of the trichomes is:
| 1. | They prevent water loss due to transpiration |
| 2. | They prevent herbivory |
| 3. | They are sensory structures that decipher the wind velocity and direction |
| 4. | They play an important part in pollination of plants |
Identify the incorrect statement:-
1. cork cambium is a periderm
2. ground meristem is a cortex and pith of a dicot stem
3. procambium is a primary vascular tissue
4. protoderm is a vascular tissue of a monocot stem
Which of the following has unevenly thick cell wall, has a primary wall (cellulose) and a secondary wall (hemicellulose or pectin), and is a simple, living, primarily mechanical tissue of the plant body?
1. Parenchyma
2. Collenchyma
3. Sclerenchyma
4. Aerenchyma
Intercalary meristems are called primary meristems because:
I. They appear early in life of a plant.
II. They contribute to the formation of the primary plant body.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect.
Identify the correct statement regarding collenchymas in plants:-
| 1. | They occur in layers below the epidermis of monocotyledonous plants. |
| 2. | Cells are much thickened at the corners due to the deposition of lignin. |
| 3. | Collenchymatous cells do not contain chloroplasts. |
| 4. | They provide mechanical strength to the growing parts of the plant. |
What is the number of correct statements amongst the following regarding the phloem tissue of plants?
| I: | Gymnosperms lack albuminous cells and sieve cells. |
| II: | The companion cells are specialized parenchymatous cells. |
| III: | Phloem parenchyma is absent in most of the monocotyledons. |
| IV: | Phloem fibers are generally absent in the primary phloem. |
1. 0
2. 2
3. 3
4. 4
In dicot roots, the initiation of the lateral roots and the vascular cambium during the secondary growth takes place in:
| 1. | Pericycle |
| 2. | Endodermis |
| 3. | Conjuctive tissue |
| 4. | Epidermis |
In dicot stem the vascular bundle is:-
| 1. | Conjoint, open and with exarch protoxylem. |
| 2. | Conjoint, open and with endarch protoxylem. |
| 3. | Conjoint and closed. |
| 4. | Scattered, each surrounded by a sclerenchymatous bundle sheath. |
Bulliform cells:
| 1. | Are found in dorsiventral leaves and help in photosynthesis. |
| 2. | Are found in dorsiventral leaves and help in minimizing water loss. |
| 3. | Are found in isobilatetral leaves and help in minimizing water loss. |
| 4. | Are found in isobilatetral leaves and help in photosynthesis. |
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