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