In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are :
1. Synergids, antipodals and Polar nuclei
2. Synergids, Primary endosperm nucleus and zygote
3. Antipodals, synergids, and primary endosperm nucleus
4. Synergids, Zygote and Primary endosperm nucleus
Subtopic:  Double Fertilization |
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What is the fate of the male gametes discharged in the synergid?

1. One fuses with the egg and the other fuses with central cell nuclei
2. One fuses with the egg and the other(s) degenerate(s) in the synergid
3. All fuse with the egg
4. One fuses with the egg and the other(s) fuse(s) with a synergid nucleus

Subtopic:  Double Fertilization |
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Double fertilization is:
1. Fusion of two male gametes of a pollen tube with two different eggs
2. Fusion of one male gamete with two polar nuclei
3. Fusion of two male gametes with one egg
4. Syngamy and triple fusion
Subtopic:  Double Fertilization |
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Double fertilization is exhibited by:

1. Algae

2. Fungi

3. Angiosperms

4. Gymnosperms

Subtopic:  Double Fertilization |
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Endosperm is formed during double fertilization by:

1. Two polar nuclei & one male gamete

2. One polar nucleus & one male gamete

3. Ovum and male gamete

4. Two polar nuclei & two male gametes

Subtopic:  Double Fertilization |
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