Question

choose the correct option and answer the questions.

1) Growth of a plant is a ______ change.

a) Reversible (b) irreversible (c) both a and b (d) none of these

2) The thick vein in the leaf is called _______

a) Parallel venation (b)reticulate venation (c) mid rib (d) main vein

3) Which of the following is a movable joint of the skull?

a) Upper jaw (b) lower jaw (c)head bones (d) face bones

4) Which of the following animals have backbone?

a) Snake (b) snail (c) spider (d) earthworm

5) A change can be brought about by ________

a) Heating (b) cooling (c) mixing (d) all of these. ​

Answer 1

Answer:

1) irreversible

2) midrib

3) lower jaw

4) snake

5) all of these

Answer 2

Answer:

1. b irreversible
2. c mid rib
3. b only movable part is mandible or lower jaw
4. a snake
5. d all of these