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141. In isogamous species, the gametes of Chlamydomonas undergo temporary clustering before they depart in pairs. The phenomenon is called
A. Gametic differentiation
B. Clumping
C. Homothallism
D. Parthenogenesis
Explanation:
142. In Chlamydomonas the term hologamy is applied to a mode of sexual reproduction in which
A. Gametes are motile
B. Gametes are holozoic
C. The young unicellular thalli directly behave as gametes
D. The gametes are differentiated into male and female
Explanation:
143. Spirogyra belongs to the class
A. Rhodophyceae
B. Cyanophyceae
C. Xanthophyceae
D. Chlorophyceae
Explanation:
144. In scalariform conjugation of Spirogyra the fusing gametes are derived from
A. Same filament
B. Two different filament
C. Both A and B
D. Only one filament is involved in the process
Explanation:
145. Chlamydomonas shows
A. Isogamy
B. Anisogamy
C. Oogamy
D. All the above
Explanation:
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