Entry Test MCQ :: Support and Movement
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1. |
Which of the following plays the major role in providing support to young herbaceous parts of the plant: |
A. |
Living cells of epidermis with higher turgor pressure. |
B. |
Living cells of cortex and pith with higher turgor pressure. |
C. |
Collenchyma cells |
D. |
All of these |
Answer: Option D
Explanation:
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2. |
Higher turgor pressure in a plant cell is maintained by: |
A. |
Large number of vacoules in a plant cell. |
B. |
Higher ionic concentration inside vacuoles resulting from active pumping of ions at their tonoplastic membrane |
C. |
Higher osmotic pressure of the cell vacuole |
D. |
both b and c |
Answer: Option D
Explanation:
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3. |
Secondary cell wall of sclerenchyma cells is impregnated with |
A. |
Cellulose. |
B. |
Peptidoglycan and murein. |
C. |
Lignin. |
D. |
Pectin. |
Answer: Option C
Explanation:
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4. |
Among the followings which is the most longest supportive cell? |
A. |
Tracheids. |
B. |
Sclereids. |
C. |
Trachea. |
D. |
Collenchyma cells |
Answer: Option A
Explanation:
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5. |
An increrase in plant girth due to activity of _____ is called secondary growth. |
A. |
Cork cambium |
B. |
Pith. |
C. |
Vascular cambium. |
D. |
Both a and c |
Answer: Option D
Explanation:
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6. |
Vascular Cambium initially appears as actively dividing cells between: |
A. |
Primary Xylem and secondary xylem. |
B. |
Primary xylem and secondary phloem. |
C. |
Primary xylem and primary phloem |
D. |
Secondary xylem and secondary phloem. |
Answer: Option C
Explanation:
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7. |
Sperms of liverworts, mosses, ferns move towards archegonia, in response to uncleic acid released by the ovum. This is an example of: |
A. |
Chemotropic movement |
B. |
Chemotactic movement. |
C. |
Chemosastic movement |
D. |
Haptonastic movement. |
Answer: Option B
Explanation:
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8. |
The place of attachment of leaf with the shoot is called: |
A. |
Pith. |
B. |
Pit. |
C. |
Pulvinus. |
D. |
Ecdysone. |
Answer: Option C
Explanation:
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9. |
Rapid movement of leaves of mimosa on touching is an example of : |
A. |
Turgor movement |
B. |
Nastic movement |
C. |
Tropic movements. |
D. |
Growth movement |
Answer: Option A
Explanation:
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10. |
Roots of a plant show |
A. |
Positive phototropism and negative geotropism. |
B. |
Negative phototropism and positive geotropism. |
C. |
Negative tactic movement and positive tropic movement. |
D. |
Positive geotropism of stem and roots |
Answer: Option B
Explanation:
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