The sexual reproduction is by copulation of male and female followed by embryological development. Salient features of various phyla are described in Chapter 4.
Assertion (A): Fungal sexual reproduction involves a sequence of nuclear events. Reason (R): Nuclear fusion occurs first, followed by the formation of dikaryotic cells.
Correct answer: C — If assertion is true but reason is false.
NCERT confirms fungal sexual reproduction involves sequential nuclear events (Assertion true). However, NCERT states “Later, the parental nuclei fuse and the cells become diploid” which indicates dikaryotic stage formation occurs first, then nuclear fusion. The Reason reverses this temporal sequence - dikaryotic stage formation precedes nuclear fusion, not the reverse.
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