Q. No.Metaphloem contains _________sieve tubes while protophloem contains____________ sieve tubes.
1. bigger, narrow
2. narrow, bigger
3. narrow, no
4. no, bigger
Epidermal tissue system consists of
| 1. | epidermal cells |
| 2. | stomata |
| 3. | trichomes, root hairs |
| 4. | All of the above |
Which one is true regarding epidermis?
(1)usually single layered
(2)made up of parenchymatous cells
(3)outermost layer of the primary plant body
(4)All of the above
Stomata is a part of which type of tissue system
| 1. | Epidermal tissue system |
| 2. | Ground tissue system |
| 3. | Vascular tissue system |
| 4. | Both 1 and 2 |
Stomatal apparatus comprises of
| 1. | stomatal aperture, guard cells |
| 2. | stomatal aperture, guard and subsidiary cells |
| 3. | stomatal aperture and guard, subsidiary and epidermal cells |
| 4. | stomatal aperture and subsidiary cells |
In grasses, ____________cells are dumb-bell shaped
1. subsidiary cells
2. guard cells
3. Both A and B
4. stomatal apparatus
The epidermal hairs of root are usually _________while of shoots are usually________
| 1. | unicellular, multicellular |
| 2. | multicellular, unicellular |
| 3. | multicellular, multicellular |
| 4. | unicellular, unicellular |
Which of the following is true for trichomes
| 1. | usually multicellular |
| 2. | may be branched or unbranched |
| 3. | prevent transpirational water loss |
| 4. | All of the above |
Which one is incorrect statement
| 1. | subsidiary cells are specialised epidermal cells |
| 2. | cuticle is always present on epidermal tissue system |
| 3. | cuticle is absent in roots |
| 4. | Guard cells surround the stoma |
Which element of the phloem becomes dead at maturity
| 1. | sieve tube elements | 2. | companion cells |
| 3. | phloem parenchyma | 4. | phloem fibres |
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