Q. No.Minute pores known as __________ dot the surface of the epidermis of leaves and stems; each pore is bordered by two _____________ .
| 1. | stomata; guard cells |
| 2. | stomata; fibers |
| 3. | sieve tube elements; companion cells |
| 4. | sclereids; guard cells |
Subtopic: Â Epidermal Tissue System |
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Epidermal tissue system consists of
| 1. | Epidermal cells only |
| 2. | Epidermal cells and stomata only |
| 3. | Epidermal appendages only |
| 4. | Epidermal cells, stomata, trichomes and hairs |
Subtopic: Â Epidermal Tissue System |
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Stomatal apparatus is represented by:
| 1. | Stomatal aperture |
| 2. | Guard cell |
| 3. | Subsidiary cells |
| 4. | All of the above |
Subtopic: Â Epidermal Tissue System |
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Subtopic: Â Epidermal Tissue System |
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Which of the following is true for trichomes of stem?
| 1. | They are always unbranched, soft, or stiff |
| 2. | They do not perform secretion |
| 3. | They help in preventing water loss due to transpiration |
| 4. | May show secondary growth |
Subtopic: Â Epidermal Tissue System |
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The epidermal hairs of root are usually _________while of shoots are usually________
| 1. | unicellular, multicellular |
| 2. | multicellular, unicellular |
| 3. | multicellular, multicellular |
| 4. | unicellular, unicellular |
Subtopic: Â Epidermal Tissue System |
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Specialised epidermal cells surrounding the guard cells are called ?
| 1. | subsidiary cells | 2. | bulliform cells |
| 3. | lenticels | 4. | complementary cells |
Subtopic: Â Epidermal Tissue System |
 90%
Level 1: 80%+
NEET - 2016
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One important difference between the anatomy of roots and the anatomy of leaves is that:
| 1. | only leaves have phloem and only roots have xylem. |
| 2. | root cells have cell walls and leaf cells do not. |
| 3. | a waxy cuticle covers leaves but is absent from roots. |
| 4. | vascular tissue is found in roots but is absent from leaves. |
Subtopic: Â Epidermal Tissue System |
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Guard cells help in:
| 1. | protection against grazing |
| 2. | transpiration |
| 3. | guttation |
| 4. | fighting against infection |
Subtopic: Â Epidermal Tissue System |
 88%
Level 1: 80%+
AIPMT - 2009
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The given diagram shows dumb-bell shaped guard cells. This type of guard cell is typically found in which of the following types of plants?
| 1. | Dicotyledonous plants like China rose and sunflower |
| 2. | Gymnosperms like Cycas and Pinus |
| 3. | Monocotyledonous plants like wheat and maize |
| 4. | Bryophytes like Funaria and Riccia |
Subtopic: Â Epidermal Tissue System |
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