प्रश्न 5.परागकण की बाह्यचोल एवं अंतःचोल में उपस्थित रासायनिक पदार्थ का नाम
बताइए? एक परागकण का चित्र बनाकर उसमें निम्न भाग दर्शाइये।
अंक-5 शब्दसीमा 100-150
(i) बाहयचोल
(ii) अंतः चोल
(iii) कायिक कोशिका
(iv) जनन कोशिका
Q. 5.
Name the chemical substance present in exine and intine of pollen grain. Draw a
diagram of pollen grain and label following parts.
(i) Exine
(ii) intine
(iii) Vegetative cell
(iv) Germinal cell.
Answers
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Answer:
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.
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