Free practice › Class 12 › Biology › Chapter 1
Sexual Reproduction in Flowering Plants — NEET MCQs with answers
Flowering plants reproduce sexually through structures within the flower: the androecium (stamens, male) and the gynoecium (pistils, female). After pollination and double fertilisation, the zygote develops into the embryo and the primary endosperm cell into the endosperm, while ovules mature into seeds and the ovary into a fruit. Some plants produce seeds without fertilisation (apomixis), and some seeds contain more than one embryo (polyembryony).
Topics in this chapter
- 1.1 Flower — A Fascinating Organ of Angiosperms
- 1.2 Pre-Fertilisation: Structures and Events
- 1.3 Double Fertilisation
- 1.4 Post-Fertilisation: Structures and Events
- 1.5 Apomixis and Polyembryony
Free practice questions
Which of the following pairs of terms is most closely associated in NCERT?
- A. Meiosis and apomictic egg
- B. Double fertilisation and apomixis
- C. Seedless fruit and polyembryony
- D. Nucellar apomixis and polyembryony
Show answer
Answer: D — NCERT discusses apomixis and polyembryony together in the same sub-chapter; nucellar apomixis leads to polyembryony.
NCERT Class 12 Biology Ch 1.5
During its journey, after reaching the ovule the pollen tube enters the synergid through the
- A. Antipodal region
- B. Filiform apparatus
- C. Chalazal end
- D. Egg apparatus centre
Show answer
Answer: B — After reaching the ovule via the micropyle, the pollen tube enters the synergid through the filiform apparatus.
NCERT Class 12 Biology Ch 1.3
The main function of the tapetum is to:
- A. Produce sporopollenin only
- B. Help in dehiscence of the anther
- C. Nourish the developing pollen grains
- D. Protect the anther from drying
Show answer
Answer: C — The tapetum nourishes the developing pollen grains.
NCERT Class 12 Biology Ch 1.2
Which of the following is NOT listed by NCERT as an advantage that seeds offer to angiosperms?
- A. Food reserves that nourish young seedlings
- B. Generation of new genetic combinations leading to variations
- C. Better adaptive strategies for dispersal to new habitats
- D. Immediate germination soon after formation without dormancy
Show answer
Answer: D — NCERT lists: dependable seed formation (water-independent pollination/fertilisation), better dispersal strategies, food reserves nourishing seedlings, hard seed coat protection, and generation of genetic variations. Immediate germination without a storable dormant phase is NOT listed as an advantage.
NCERT Class 12 Biology Ch 1.4
NCERT notes that flowers have been used by humans as symbols for conveying which of the following?
- A. Human feelings such as love and grief
- B. Weather forecasts
- C. Mathematical measurements
- D. Soil fertility
Show answer
Answer: A — NCERT states flowers have been used as symbols for conveying important human feelings such as love, affection, happiness, grief and mourning.
NCERT Class 12 Biology Ch 1.1
A key reason double fertilisation is considered evolutionarily significant is that it ensures
- A. Formation of two embryos per ovule in all cases
- B. Formation of nutritive endosperm coupled with zygote formation, unique to angiosperms
- C. Production of haploid endosperm
- D. Fertilisation without a pollen tube
Show answer
Answer: B — Because the endosperm (nutritive tissue) forms only when fertilisation occurs (triple fusion), nutrient tissue develops in coordination with the embryo — an event unique to flowering plants.
NCERT Class 12 Biology Ch 1.3
Which of the following correctly contrasts the two ways apomictic seeds develop as per NCERT?
- A. One from an egg fertilised by two sperms, the other from endosperm
- B. One from a haploid egg, the other from a pollen grain
- C. One from an unreduced egg cell, the other from nucellar cells — both without fertilisation
- D. Both from fertilised zygotes splitting
Show answer
Answer: C — NCERT gives two ways: (i) a diploid egg formed without meiosis develops into an embryo; (ii) nucellar cells develop into embryos. Both occur without fertilisation.
NCERT Class 12 Biology Ch 1.5
Which is the only type of pollination that brings genetically different types of pollen grains to the stigma?
- A. Geitonogamy
- B. Cleistogamy
- C. Autogamy
- D. Xenogamy
Show answer
Answer: D — Xenogamy is the only type of pollination which during pollination brings genetically different pollen grains to the stigma.
NCERT Class 12 Biology Ch 1.2
Which of the following structures is NOT part of a typical dicotyledonous embryo?
- A. Coleoptile
- B. Epicotyl
- C. Hypocotyl
- D. Two cotyledons
Show answer
Answer: A — A dicot embryo comprises embryonal axis, two cotyledons, epicotyl, plumule, hypocotyl, radicle and root cap. The coleoptile is a monocot (grass) structure and is not part of a dicot embryo.
NCERT Class 12 Biology Ch 1.4
Which of the following pairs correctly matches a reproductive whorl with its sex?
- A. Corolla — male
- B. Gynoecium — male
- C. Androecium — female
- D. Androecium — male
Show answer
Answer: D — NCERT: androecium is male and gynoecium is female. So androecium — male is correct.
NCERT Class 12 Biology Ch 1.1
Practise all 512 questions of Sexual Reproduction in Flowering Plants in timed NEET tests
+4/−1 marking like the real exam · see which topics cost you marks · notes, XP and leaderboards
Start your free trial →