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
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Answer:
16) Giant squirrel
17) Placenta
18) Monozygotic
19) Meiosis
20) Mitosis
21) Transverse binary fission
22) Half
23) 1
24) Androecium or Gynoecium
25) Nutrients
26) Proteins
27) Lesser florican
28) Giant squirrel
29) Genetic
30) Energy
31) magnetic induction
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