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Question

The number of pollen grains, produced by each head inflorescence of family Asteraceae which has 10 actinomorphic flowers and if each anther produces 20 pollen grains are

A
300
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B
800
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C
500
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D
1000
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Solution

The correct option is B 1000
In family Asteraceae, the flowers are arranged in disc florets. Each flower contains 5 anthers.
Therefore, 10 flowers will have 10 x 5 = 50 anthers.
Pollen grains in 1 anther are 20
Therefore, pollen grains in 50 anthers are 50 x 20 = 1000
So, the correct answer is '1000'.

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