Refer to the given dichotomous key and select the correct option regarding P, Q, R and S.
I. (a) Plant shows natural vegetative propagation. - Go to II
(b) Plant reproduces through asexual spores. - Go to III

Options

A. P could be Chrysanthemum or strawberry whereas R could be mushroom or mould.
B. Q could be Bryophyllum or Begonia whereas S could be fern or moss.
C. P and Q may produce flowers and seeds whereas both these structures are absent in R and S.
D. P could be garlic that propagates through bulbs or turmeric that propagates through tuber whereas Q could be Petunia or Begonia.

Answer

C

Explanation

P shows natural vegetative propagation through stem, so P could be Chrysanthemum or strawberry. Q shows natural vegetative propagation through leaves. So, Q could be Bryophyllum or Begonia. R is a plant that reproduces through asexual spores and leaves of these plants are called fronds which contain spores. Hence R could be fern. Plant S reproduces through asexual spores and is short. It grows only in moist habitats and bear spare case or capsule. So, S could be moss.