Sexual Reproduction in Flowering Plants

Describe the structure of a mature anther. Explain the process of microsporogenesis leading to the formation of a mature pollen grain (male gametophyte).

Differentiate between geitonogamy and xenogamy. Which of these is genetically similar to autogamy and why?

Describe the process of double fertilisation in angiosperms. Why is it unique to flowering plants? Mention the fate of the zygote and the primary endosperm cell.

Describe the structure of a typical mature embryo sac in an angiosperm. Mention the function of the synergids and antipodal cells.

What is apomixis? Explain its significance for hybrid seed production.

Explain the process of megasporogenesis in angiosperms. How is the monosporic 7-celled, 8-nucleate embryo sac formed from a functional megaspore?

Why do many flowering plants adopt outbreeding devices? Describe any two such devices that prevent self-pollination.

What is meant by pollen-pistil interaction? How does the pistil recognise compatible pollen and promote its germination?

What is parthenocarpy? Give one example of a parthenocarpic fruit.

Differentiate between an albuminous and a non-albuminous seed, giving one example of each.

How many marks is Sexual Reproduction in Flowering Plants worth in the Class 12 board exam?

Around 9 marks of the 70-mark CBSE Biology theory paper, based on the official unit-wise weightage. Label flower parts + double fertilisation diagram — drawn every year.

Is Sexual Reproduction in Flowering Plants easy or hard?

It's rated medium — a moderate-difficulty chapter in Class 12 Biology. Most students need about 4 hours to cover it well.

What should I focus on in Sexual Reproduction in Flowering Plants?

Going by the board papers themselves, the recurring areas are Microsporogenesis, Pollination, Double Fertilisation, Embryo Sac, Apomixis & Polyembryony — that's where the marks actually sit.

What questions come from Sexual Reproduction in Flowering Plants in board exams?

Between 2018–2024, CBSE board papers asked questions from this chapter on Microsporogenesis, Pollination, Double Fertilisation, Embryo Sac — 1- to 5-mark questions.