M.C.Q - Science STD 10 Questions - Vidyadip

Questions

M.C.Q

🎯

Test yourself on this topic

8 questions · timed · auto-graded

MCQ 11 Mark

Two of the following four figures that illustrate budding are

A
I and II
B
I and IV
C
II and IV
D
I and III

Answer

(B) I and IV
Explanation:
Yeast and Hydra reproduced by budding. A younger growth on the parent organism is seen.

View full question & answer→

MCQ 21 Mark

United Nations Environment Programme forged an agreement to

A
control water pollution
B
reduce CFC production
C
control $\mathrm{CO}_{2}$ emissions in the environment
D
conserve biodiversity

Answer

(B) reduce CFC production
Explanation:
reduce CFC production

View full question & answer→

MCQ 31 Mark

Opening and closing of stomata is due to

A
Diffusion of $\mathrm{CO}_{2}$ in and out of the guard cells.
B
High pressure of gases inside the cells.
C
Stimulus of light in the guard cells.
D
Movement of water in and out of the guard cells.

Answer

(D) Movement of water in and out of the guard cells.
Explanation:
They swell up when enters guard cells due to water movement. The pore at the stomata is now open. The stomata close when they dry out and become flaccid.

View full question & answer→

MCQ 41 Mark

Which one of the following is not a natural ecosystem?

A
Cropland ecosystem
B
Forest ecosystem
C
Grassland ecosystem
D
Pond ecosystem

Answer

(A) Cropland ecosystem
Explanation:
Cropland ecosystem is man made.

View full question & answer→

MCQ 51 Mark

Progesterone and relaxin bring about changes in the body of a

A
Old woman
B
Pregnant woman
C
Young girl
D
Teenaged girl

Answer

(B) Pregnant woman
Explanation:
Progesterone levels also are extraordinarily high during pregnancy that causes a laxity and relaxin hormone produced by the ovary it relaxes the mother's muscles, joints and ligaments to make room for the growing baby.

View full question & answer→

MCQ 61 Mark

Match the following with correct response.

Column A	Column B
1. The master gland	(a) Control cell division and cell growth
2. Cytokinin	(b) Regulates metabolism
3. Insulin	(c) Reduces blood sugar
4. Thyroxine	(d) Pituitary gland

A
(i) - (d), (ii) - (a), (iii) - (c), (iv) - (b)
B
(i) - (c), (ii) - (b), (iii) - (d), (iv) - (a)
C
(i) - (a), (ii) - (c), (iii) - (b), (iv) - (d)
D
(i) - (b), (ii) - (d), (iii) - (a), (iv) - (c)

Answer

(A) (i) - (d), (ii) - (a), (iii) - (c), (iv) - (b)
Explanation:
- The pituitary gland is a master gland that produces growth hormones.
- Cytokinins are a group of hormones that promote cell division in plant roots and shoots and the growth of buds.
- The insulin hormone is secreted by the pancreas which maintains blood sugar level in the body.
- Thyroxine a hormone that is made by the thyroid gland and is one of the most important thyroid hormones and it also maintains metabolism in the body.

View full question & answer→

MCQ 71 Mark

In a cross between pure tall pea plants (TT) and pure dwarf pea plants (tt) the offsprings of $\mathrm{F}_{1}$ generation were all tall. When $F_1$ generation was self-crossed, the gene combinations of the offsprings of $F_2$ generation will be:

A
$\mathrm{Tt}: \mathrm{tt}$
B
$\mathrm{TT}: \mathrm{tt}$
C
$\mathrm{TT}: \mathrm{Tt}: \mathrm{tt}$
D
$\mathrm{TT}: \mathrm{Tt}$

Answer

(C) $\mathrm{TT}: \mathrm{Tt}: \mathrm{tt}$
Explanation:
TT : Tt : tt

View full question & answer→

MCQ 81 Mark

As compared to daytime, the amount of carbon dioxide released by the plants during night is more because:

A
Plants do not respire during daytime.
B
It is not produced during daytime.
C
It is stored in the leaves of plants during daytime.
D
Major amount of carbon dioxide produced is used up for photosynthesis during daytime.

Answer

(D) Major amount of carbon dioxide produced is used up for photosynthesis during daytime.
Explanation:
Major amount of carbon dioxide produced is used up for photosynthesis during daytime.

View full question & answer→

Generate Paper Free All MODEL PAPER - 10 [2026] topics

M.C.Q - Science STD 10 Questions - Vidyadip