Class 12th Biology 2017 Set2 Delhi Board Paper Solution
Question 25
Read the statement and answer the questions that follows.
A flower of brinjal has 520 ovules in its ovary. However, it produces a fruit with only 480 viable seeds.
(a) What could have prevented the rest of the 40 ovules from maturing into viable seeds? Explain giving a reason.
Answer
Ovules can develop into viable seeds having the ability to germinate under suitable environmental conditions, however, often ovules do not develop in viable seeds because of the following reasons:
(i) Excessive dry weather or high temperature.
(ii) Damage to embryo.
(iii) Starvation due to exhaustion of food in ovule
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