Starting from the innermost part, the correct sequence of parts in an ovule are
egg, nucellus, embryo sac, integument
egg, embryo sac, nucellus, integument
embryo sac, nucellus, integument, egg
egg, integument, embryo sac, nucellus
From the statements given below choose the option that are true for a typical female gametophyte of.
(i) It is eight-nucleate and seven-celled at maturity.
(ii) It is free-nuclear during the development.
(iii) It is situated inside the integument, but outside the nucellus.
(iv) It has an egg apparatus situated at the chalazal end.
(i) and (iv)
(ii) and (iii)
(i) and (ii)
(ii) and (iv)
Autogamy can occur in a chasmogamous flower if
pollen matures before maturity of ovule
ovules mature before maturity of pollen
both pollen and ovules mature simultaneously
both anther and stigma are of equal lengths
Choose the correct statement from the following.
Cleistogamous flowers always exhibit autogamy.
Chasmogamous flowers always exhibit geitonogamy.
Cleistogamous flowers exhibit both autogamy and geitonogamy.
Chasmogamous flowers never exhibit autogamy.
A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by
insects
water
wind
animals