First slide

Angiosperms

Question

Identify the ones which are not diploid?
(a) Main plant body of the bryophyte
(b) Nucellus in ovule of angiosperms
(c) Integumented megasporangium of Cycas
(d) Primary endosperm nucleus in angiosperms

Easy

A

a and c
B

a and d
C

b and d
D

a, c and d

Solution

The main plant body in bryophyte is gametophyte. Hence haploid. Primary endosperm nucleus in angiosperms is formed by the fusion of two polar nuclei and the egg cell. Therefore, it is triploid. Nucellus in ovule of angiosperms is diploid. Integumented megasporangium or ovule of Cycas is diploid.

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