NEET-UG Biology · Class 12
Double fertilisation — NEET & JEE Questions
Double fertilisation is a topic in Sexual Reproduction in Flowering Plants, a Class 12 Biology chapter of the NEET-UG syllabus. TestBudy holds 12 published NEET-UG questions on Double fertilisation, each with the marking scheme of the real paper.
- questions
- 12
- shown here
- 10
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Double fertilisation MCQs with solutions
10 of the 12 published questions on this topic, exactly as they appear in a test. Answers and worked solutions come with your result rather than on this page.
What two fusion events together constitute double fertilisation in angiosperms?
- A. Syngamy and triple fusion
- B. Pollination and germination
- C. Meiosis and mitosis
- D. Microsporogenesis and megasporogenesis
What is formed by syngamy in an angiosperm embryo sac?
- A. A triploid primary endosperm nucleus
- B. A diploid zygote
- C. A haploid endosperm
- D. A diploid antipodal cell
Double fertilisation in angiosperms involves
- A. one male gamete fusing with the egg and the other fusing with the two polar nuclei or secondary nucleus
- B. two male gametes both fusing with the egg
- C. two eggs fusing with one male gamete
- D. fusion of two pollen grains
The fusion of one male gamete with the two polar nuclei or secondary nucleus is called
- A. triple fusion
- B. syngamy
- C. pollination
- D. microsporogenesis
Which one of the following is a triploid cell?
- A. Synergid
- B. Central cell
- C. Zygote
- D. Primary endosperm cell
In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are :
- A. Antipodals, synergids, and primary endosperm nucleus
- B. Synergids, Zygote and Primary endosperm nucleus
- C. Synergids, antipodals and Polar nuclei
- D. Synergids, Primary endosperm nucleus and zygote
What is the usual ploidy of the primary endosperm nucleus formed by triple fusion?
- A. Diploid
- B. Haploid
- C. Triploid
- D. Tetraploid
If the egg and each male gamete are haploid, what is the ploidy of the zygote formed by syngamy?
- A. Haploid
- B. Diploid
- C. Triploid
- D. Tetraploid
A pollen tube releases two male gametes into a normal embryo sac. One fuses with the egg, but the second cannot fuse with the central cell. Which product will fail to form normally?
- A. Seed coat from integuments
- B. Zygote
- C. Pollen tube
- D. Primary endosperm nucleus
In a typical angiosperm embryo sac, the primary endosperm nucleus formed after triple fusion is usually
- A. haploid
- B. diploid
- C. triploid
- D. tetraploid
Common mistakes in Double fertilisation
Recorded against questions in this topic that are not shown above, so none of these points at an answer you can see on this page.
- Using the same ploidy for both fertilisation products.
- Interprets 'double' as two pollen grains or two rounds of zygote division.
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