REPRODUCTION
SEXUAL REPRODUCTION IN FLOWERING PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sporopollenin
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Pecto-cellulose
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Silica & cellulose
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Only cellulose
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Detailed explanation-1: -So, the correct option is ‘Pectocellulose-sporopollenin respectively’.
Detailed explanation-2: -The intine, or inner layer, consists primarily of cellulose and pectins. The exine, or outer layer, is composed of a highly decay-resistant chemical called sporopollenin.
Detailed explanation-3: -Complete answer: Pectocellulose is a special form of cellulose that is found in fibers – flax fiber and in the stem of the family Gramineae. > Option B: Lignocellulose is found in lignified tissues.
Detailed explanation-4: -The inner wall of the pollen grain is called the intine . It is thin and continuous layer made up of cellulose and pectin. So, the correct answer is “Intine."
Detailed explanation-5: -(c) Intine of pollen grains is made up of cellulose and pectin.