The exchange of gases between the outer atmosphere and internal tissue of stem is through ___________.

  1. Lenticels
  2. Legume
  3. Epidermis
  4. Cambium ring
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In a TS of lenticel arrange these in order (interior to exterior)
1. Secondary cortex
2. Epidermis
3. Cork cambium
4. Complementary cells
A. 1, 3, 4, 2
B. 1, 2, 3, 4
C. 1, 4, 3, 2
D. 4, 1, 2, 3

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In dicot root the vascular cambium is completely _________ in origin.

  1. Primary
  2. Secondary
  3. Tertiary
  4. Quaternary
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Which one yields fibres?

  1. Coconut
  2. Oak
  3. Teak
  4. Sisso
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Death of protoplasm is a pre-requisite for vital function like

  1. Transport of sap
  2. Transport of food
  3. Absorption of water
  4. Gaseous exchange
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Dicotyledonous leaf is also known as

(A)Dorsiventral leaf

(B)Bi-facial leaf

(C)Both A and B

(D)Isobilateral leaf

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The main parts of the lamina of the dorsiventaral leaf are

(A)epidermis

(B)mesophyll tissues

(C)vascular system

(D)All of the above

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The upper and lower surface of the dicots leaf are known as

(A)adaxial and abaxial respectively

(B)abaxial and adaxial respectively

(C)Both A and B

(D)anterior and posterior respectively

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In dicot leaf, stomata is more present on the

(A)adaxial surface

(B)abaxial surface

(C)equally on both surfaces

(D)stomata is absent

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In dicot leaf , cuticle is present on the

(A)adaxial epidermis

(B)abaxial epidermis

(C)lateral epidermis

(D)Both A and B

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