Q10 of 53 Page 9

Autogamy can occur in a chasmogamous flower if:

Autogamy where pollination is achieved within the same flower, i.e., it is type of self pollination. In this the pollens are transferred from anther to stigma of same flower.


Chasmogamous flower are flowers with exposed anthers and stigma.


So, for autogamy to occur in chasmogamous flower both pollen and ovules should mature simultaneously. As pollen release and stigma reception should be synchronised for autogamy to take place.


In chasmogamous flower length of anther and stigma plays a secondary role in autogamy.


Therefore, correct answer is option (c).

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8

Starting from the innermost part, the correct sequence of parts in an ovule are,

 9

From the statements given below choose the options that are true for a typical female gametophyte of a flowering plant:

i. It is 8-nucleate and 7-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


 11

Choose the correct statement from the following:

 12

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: