Chapter: Reproduction in Lower and Higher Plants· Biology

Which of the following substances protects pollen grains from chemicals?

Q.1 (viii) Which of the following substances protects pollen grains from chemicals?

A. Pectin

B. Hemicellulose

C. Cellulose

D. Sporopollenin

Doubtly Asked 29 Oct 2026 Board exam · July 2025 hsc 12th Save WhatsApp Report

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Answer: (d) Sporopollenin

The exine of the pollen grain is made of sporopollenin, one of the most resistant organic substances known. It withstands high temperature, strong acids, alkalis and enzymes, so pollen grains are well preserved as fossils.

Doubtly AI · 29 Oct 2026 AI-verified · Nov 2026 Report

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Which of the following substances protects pollen grains from chemicals?

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