Practice tests · NEET

NEET Sexual Reproduction in Flowering Plants: 5 practice MCQs

By the PrepMatic team · Updated 9 Oct 2026 · 3 min read

Sexual Reproduction in Flowering Plants is a Class 12 Biology chapter that follows the flower from the stamen and pistil through pollination, fertilisation and the formation of seed and fruit. It is a reliable chapter for NEET because the sequence is logical and the terms are specific. The five MCQs below test pollen formation, the embryo sac, triple fusion, the pollen wall and the tapetum.

What this chapter covers in the NEET syllabus

The NMC unit is Reproduction, and this chapter is the plant half; the NCERT Class 12 chapter has the same title. The topics are:

• The flower as the site of reproduction: structure of the stamen and the pistil.
• Microsporogenesis and megasporogenesis, and the development of the male and female gametophytes.
• Pollination: kinds, agents, and outbreeding devices.
• Pollen-pistil interaction, double fertilisation and post-fertilisation events (endosperm and embryo development, seed and fruit).
• Apomixis and polyembryony.

Five practice MCQs on Sexual Reproduction in Flowering Plants

Question 1

The number of pollen grains formed from one pollen mother cell (microspore mother cell) is:

• A. 1
• B. 2
• C. 4
• D. 8

Question 2

A typical angiosperm embryo sac at maturity has:

• A. 8 cells and 8 nuclei
• B. 7 cells and 8 nuclei
• C. 8 cells and 7 nuclei
• D. 7 cells and 7 nuclei

Question 3

The fusion of one male gamete with the two polar nuclei during double fertilisation forms the:

• A. primary endosperm nucleus (3n)
• B. diploid zygote
• C. haploid embryo
• D. antipodal cells

Question 4

The exine, the hard outer layer of a pollen grain, is made of:

• A. cellulose
• B. sporopollenin
• C. pectin
• D. lignin

Question 5

The innermost layer of the wall of a microsporangium, which nourishes the developing pollen grains, is the:

• A. epidermis
• B. endothecium
• C. middle layers
• D. tapetum

Answers and explanations

1. C. A pollen mother cell is diploid and divides by meiosis to give four haploid microspores, which develop into four pollen grains (a microspore tetrad). Each pollen grain is a male gametophyte.
2. B. The megaspore nucleus divides mitotically three times, giving 8 nuclei. Cell walls form around six of them: the egg and two synergids at the micropylar end, and three antipodals at the chalazal end. The two polar nuclei lie in the large central cell, so there are 7 cells and 8 nuclei.
3. A. In double fertilisation, one male gamete fuses with the egg to form the diploid zygote (syngamy), and the other fuses with the two polar nuclei to form the triploid primary endosperm nucleus (triple fusion). The PEN becomes the endosperm.
4. B. The exine is made of sporopollenin, one of the most resistant organic materials known, which is why pollen is preserved as fossils. It has germ pores where sporopollenin is absent. The inner layer, the intine, is made of cellulose and pectin.
5. D. The wall of a microsporangium has four layers: epidermis, endothecium, middle layers and, innermost, the tapetum. The tapetum nourishes the developing microspores and its cells are often multinucleate.

How to prepare Sexual Reproduction in Flowering Plants

• Follow the sequence with a flow chart. Stamen (anther) to microspore mother cell to pollen grain; pistil (ovule) to megaspore mother cell to embryo sac; pollination; pollen tube; double fertilisation; endosperm, embryo, seed and fruit. For each step, note the ploidy (n, 2n, 3n).
• Draw the main figures: a transverse section of an anther, the structure of an anatropous ovule and the 7-celled embryo sac. Label the parts that NCERT names, such as the funicle, hilum, integuments, micropyle and chalaza.
• Learn pollination types and examples. Autogamy, geitonogamy (genetically similar to autogamy but functionally cross-pollination) and xenogamy, with outbreeding devices such as dichogamy, self-incompatibility and unisexual flowers.
• Know the special cases: cleistogamous flowers (Viola, Oxalis and Commelina), pollination by water in Vallisneria, apomixis (seeds without fertilisation) and polyembryony, as in citrus and mango.
• Remember seed structure: dicot versus monocot seeds, and the fates of the ovule parts after fertilisation (ovule to seed, ovary to fruit, integuments to seed coat).

Draw the sequence from memory twice a week for a fortnight and the chapter becomes dependable. See the NEET Biology preparation guide for planning, and compare with the animal side in Human Reproduction.

Take a full Plant Sexual Reproduction test on PrepMatic

Test this chapter once you can draw the sequence from memory. A PrepMatic topic test is about 15 questions in 30 minutes and uses NEET's negative marking. The free Basic plan includes topic tests, and Human Reproduction is the natural next chapter.

← All practice tests