51.  During which phase an living organism becomes sexually mature ?

A. Childhood

B. Adolesence

C. Old age

D. None of these

Answer : Option B

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52.  In plants, the phase from germination to grow till its maturity is known as ?

A. Linear growth phase

B. Germination phase

C. Flowering phase

D. None of the above

Answer : Option A

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53.  Which phase of conjugation is impossible in gametes ?

A. Post-fertilization phase

B. Fertilization phase

C. Pre-fertilization phase

D. Gamete phase

Answer : Option D

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54.  Two gametes having similar appearance are called as.....

A. Gametes

B. Isogametes

C. Heterogametes

D. Isospores

Answer : Option B

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55.   In which plants isogametes are seen?

A. Cladophora

B. Ulothrix

C. Spirogyra

D. Both a and b

Answer : Option D

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56.  Morphologically distinct gametes are called as

A. Isogametes

B. Heterogametes

C. Gametes

D. Iso-spores

Answer : Option D

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57.  Which organisms have diploid body organization?

A. Monera and Fungi

B. Algae and Bryophyte

C. Pteridophytes and Angiosperms

D. Both a and b

Answer : Option D

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58.  Which organisms have diploid body organization?

A. Pteridophytes, angiosperms

B. Angiosperms

C. Most of the animals

D. All three

Answer : Option D

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59.  Normally male gametes are.....

A. Stationary

B. Ordinary

C. Nutritive

D. Motile

Answer : Option D

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60.  Normally Female gametes are.... .

A. Stationary

B. Ordinary

C. Nutritive

D. Motile

Answer : Option A

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