1.
The embryo sac shown in Fig. 1.8 belongs to which type?
2.
Cleistogamous flowers ensure
3.
Synergids possess a specialised structure called
4.
The chalazal end is characterised by presence of
5.
The embryo sac wall is derived from
6.
Anemophilous flowers usually have
7.
Cellularisation of embryo sac occurs after
8.
The female gametophyte completes development
9.
In Polygonum type, megaspore degeneration occurs at
10.
The functional megaspore develops from
11.
Which feature is NOT associated with wind pollination?
12.
The mature embryo sac is best described as
13.
The central cell becomes highly vacuolated to
14.
The antipodal cells function mainly in
15.
Which prevents self-pollination genetically?
16.
Vallisneria shows which type of pollination?
17.
The egg cell nucleus is
18.
Bat pollinated flowers are usually
19.
In double fertilisation, one male gamete fuses with
20.
Pollination is best defined as transfer of pollen grains from
21.
Product of triple fusion is
22.
The number of nuclei after first mitotic division of functional megaspore is
23.
Transfer of pollen between two flowers of different plants of same species is
24.
Self-incompatibility is controlled by
25.
Physical separation of anther and stigma is
26.
Different timing of anther and stigma maturity is called
27.
The egg apparatus is formed at
28.
Which of the following is genetically similar to autogamy?
29.
Antipodal cells are usually
30.
Autogamy requires which condition compulsorily?
31.
Triple fusion involves fusion of
32.
Entomophilous flowers usually possess
33.
The secondary nucleus is
34.
The two nuclei present in central cell are called
35.
Bee pollination is called
36.
The final nuclear number before cellular organisation is
37.
After second mitotic division, the embryo sac contains
38.
Which pollination type brings genetic variation?
39.
Chasmogamous flowers are adapted mainly for
41.
Product of syngamy is
42.
Hydrophily occurs mostly in
43.
Which is a reward for pollinators?
44.
Double fertilisation is a characteristic feature of
45.
Fusion of polar nuclei occurs
