A) opspore
B) zoospore
C) zygote
D) zygospore
Correct Answer: D
Solution :
Sexual reproduction in algae is of three types : (i) Isogamy: The fusion of morphologically and physiologically similar gametes. As a result the zygospore is formed. (ii) Anisogamy: Fusion of two dissimilar gametes (morphologically or physiologically dissimilar). (iii) Oogamy: There is a formation of male sex organ (antheridium) and female sex organ (oogonium). The male gamete and female gamete fuses to form zygospore. Zoospores are thin-walled motile asexual spores. Zygote is the result of sexual fusion of male and female gametes in higher plants.
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