Question

16)In humans,sperm production occurs in the organ _______.

A. testes. B. scrotum C. prostate gland. D. ovaries.

17) Pregnant mother supplies nourishment to her foetus through _________.

A. uterus. B. placenta C. ovary D. oviduct.

18) _________ twins are formed from a single embryo.

A. Dizygotic B. Monozygotic C. Multiple zygote. D. Zygote

19)Pollen grains are formed by _________ division in locules of anthers.

A. meiosis B. mitosis C. amitosis. D binary.

20) Asexual reproduction occurs by _________ cell division.

A. mitotic B. meiotic C. fertilization. D. double fertilization.

21)This method of asexual reproduction is seen in paramecium.

A. transverse binary fission. B. longitudinal binary fission

C. simple binary fission. D. regeneration

22) In meiosis, the number of chromosomes becomes _______.

A. multiple times. B. triple C. half. D.double

23) Generally, every month, ______ ovum is released in the abdominal cavity

alternately from each ovary.

A. 1 B. 2 C. 3 D. 4

24) ________ is present in unisexual flower.

A. Both androecium and gynoecium B. Only androccium

C. Only gynoecium D. Androecium or gynoecium

25) _________ is a chemical factor of abiotic components.

A. Air. B.water. C.Nutrients D.sunlight

26) __________ is an organic compound of abiotic components.

A. Proteins. B. Iron. C. Sodium. D. Oxygen

27) _______ is a rare species.

A. Lesser florican B. Tiger C. Giant squirrel. D. Musk deer

28) _________ is an indeterminate species.

A. Red panda. B. Lion C. Lion tailed monkey D. Giant squirrel

29) Occurrence of diversity among the organisms of the same species is called

_______ diversity.

A.species. B.genetic C.ecosystem. D.animal

30) In modern civilization,-------- has become a primary need.

A.food. B.cloth C.shelter. D.energy

31)Most electric power plants are based on the principle of _______.

A.electro induction. B. magnetic induction​

Answer 1

Answer:

16) han sperm production occurs in testis.

17) pregnant mother supplies nourishment to her foetus through placenta.

18) mono zygotic twins are formed from a single embryo.