NCERT Class X Science Class: Chapter –7. Control and Coordination – Part-7

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Question 35:

Name the plant hormones responsible for the following

(a) Elongation of cells

(b) Growth of stem

(c) Promotion of cell division

(d) Falling of senescent leaves.

Answer:

(a) Auxin

(b) Gibberellin

(c) Cytokinin

(d) Abscisic acid

Question 36:

Label the endocrine glands in Figure.

Image the endocrine glands in Figure

Image the Endocrine Glands in Figure

Answer:

Image the endocrine glands and its part.

Image the Endocrine Glands and Its Part

Question 37:

In Figure (a), (b) and (c), which appears more accurate and why?

(a)

Image the plant shoots (A)

Image the Plant Shoots (A)

(b)

Image the plant shoots (B)

Image the Plant Shoots (B)

(c)

Image the plant shoots (C)

Image the Plant Shoots (C)

Answer:

Figure (a) is more appropriate because in a plant shoots are negatively geotropic hence, grow upwards and roots are positively geotropic so grow downwards.

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