Question:
Double fertilization is
Double fertilization is
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Double fertilization = Syngamy + Triple fusion (unique to angiosperms).
Updated On: Jul 18, 2026
- Fusion of two male gametes with an egg cell
- Fusion of one male gamete with an egg cell and other with synergids
- Fusion of one male gamete with egg cell and the second with antipodals
- Fusion of one male gamete with egg cell and the second with central cell
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The Correct Option is D
Solution and Explanation
Step 1: Understanding double fertilization.
Double fertilization is a unique feature of angiosperms in which two fertilization events occur simultaneously within the same embryo sac.
Step 2: First fertilization event (syngamy).
One male gamete fuses with the egg cell to form a diploid zygote. This process is called syngamy and leads to embryo formation.
Step 3: Second fertilization event (triple fusion).
The second male gamete fuses with the central cell (which contains two polar nuclei) to form a triploid primary endosperm nucleus. This is called triple fusion.
Step 4: Analysis of incorrect options.
Synergids and antipodals do not participate in fertilization. Hence options involving them are incorrect.
Step 5: Biological importance.
Double fertilization ensures simultaneous formation of embryo and nutritive endosperm, making angiosperms highly efficient in seed development.
Step 6: Final conclusion.
Thus, the correct answer is fusion of one male gamete with egg cell and the second with central cell.
Double fertilization is a unique feature of angiosperms in which two fertilization events occur simultaneously within the same embryo sac.
Step 2: First fertilization event (syngamy).
One male gamete fuses with the egg cell to form a diploid zygote. This process is called syngamy and leads to embryo formation.
Step 3: Second fertilization event (triple fusion).
The second male gamete fuses with the central cell (which contains two polar nuclei) to form a triploid primary endosperm nucleus. This is called triple fusion.
Step 4: Analysis of incorrect options.
Synergids and antipodals do not participate in fertilization. Hence options involving them are incorrect.
Step 5: Biological importance.
Double fertilization ensures simultaneous formation of embryo and nutritive endosperm, making angiosperms highly efficient in seed development.
Step 6: Final conclusion.
Thus, the correct answer is fusion of one male gamete with egg cell and the second with central cell.
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