When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because

[UPSC Civil Services Exam – 2011 Prelims]

(a) Water from soil cannot rise to aerial parts.

(b) Roots are starved of energy.

(c) Tree is infected by soil microbes.

(d) Roots do not receive oxygen for respiration.


Answer: (b)        

Explanation:

Tree Bark

  • Bark, often “tree bark” in botany, means the outer covering of woody plants.
  • Woody plants, unlike herbaceous plants, create an intricate framework of cells and fibers, which provides significant support and protection.
  • The bark is considered an accumulation of several different outer layers of a wood plant.
    • It consists of tissues outside the vascular cambium or central bundle of vascular cells.
    • These tissues, unlike bark, are fully alive and transfer fluids from the roots to the leaves. Hence, option 2 is correct.

Consider the following statements:                                                                   The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

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Consider the following statements:                                                         The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

Read More »
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