Question

9. Nervous system of mammals is derived from

a) Ectoderm

b) Mesoderm

c) Endoderm

d) Mesoglea

10. Budding is seen in

a) Crab

b) Oyster

c) Starfish

d) Hydra

11. GnRH is secreted from

a) Testis

b) Ovary

c) Hypophysis

d) Hypothalamus

12. Steps of embryogenesis are

a) Blastula- morula- zygote- gastrula- embryo

b) Zygote- morula- blastula- gastrula- embryo

c) Zygote- gastrula- blastula- morula- embryo

d) Blastula- morula- gastrula - zygote- embryo

13. Mutation is caused by

a) Any chemical compound

b) Any physical agent

c) Mutagens

d) None of the above

14. Number of allosome present in a sperm nucleus of human is

a) 1

b) 2

c) 22

d) 23

15. Acid rain is mainly caused by

a) NO2

b) SO2

c) O2

d) NO2 and SO2

16. Adrenal gland is also called
a) Supra hepatic gland

b) Supra corotic gland

c) Supra renal gland

d) Supra stomach gland

17. Vasopressin is secreted from

a) Kidney

b) Anterior pituitary

c) Hypothalamic neuron

d) All of these

18. Number of thoracic ganglia of Periplaneta americana is

a) 2

b) 3

c) 4

d) None of these

19. The enzyme which is known as ‘molecular glue’ is- a) Restriction endonuclease

b) DNA ligase

c) Exonuclease

d) Lipase

20. ‘Sea Horse’ is a

a) Mammal

b) Fish

c) Bird

d) Snake​

Answer 1

9) Answer -(b) Mesoderm

10) Answer -- d ) Hydra

11) Answer :

15) Answer : SO2


Lots of questions are there . Sorry no time for much questions.

Answer 2

10.Hydra

20.Fish

That much only I know.