The Question is from neet-botany sexual-reproduction-in-flowering-plants double-fertilization, and it was created by the author NISHANTH

Question

What is the fate of the two male gametes discharged into the embryo sac during double fertilization?

NISHANTH · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
 **Primary Concept**: Double fertilization in flowering plants
 **Related Topics**: Angiosperm reproduction, Embryo development, Pollen tube, Synergids, Polar nuclei
 **Prerequisites**: Basic understanding of plant reproduction and cell fusion.
## SOLUTION PATHWAY
**Given Information**:
  Two male gametes enter the embryo sac.
  Double fertilization occurs.
**Method & Steps**:
 1. Identify the components of the embryo sac.
  Reasoning: The embryo sac contains an egg cell, two synergids, and a central cell (containing two polar nuclei).
 2. Understand the process of double fertilization.
  Working: Double fertilization involves one male gamete fusing with the egg cell to form a zygote (diploid, 2n), and the other male gamete fusing with the central cell (containing two polar nuclei) to form the primary endosperm nucleus (triploid, 3n).
  Key Point: This process is unique to angiosperms (flowering plants).
 3. Determine the fate of the two male gametes.
  Result: One male gamete fertilizes the egg cell, and the other fertilizes the central cell.
  Verification: This aligns with the definition of double fertilization.
 ## OPTION ANALYSIS
A :x: Both male gametes fusing with the egg cell is incorrect; only one male gamete fuses with the egg cell.
B :x: One male gamete fusing with a synergid is incorrect; synergids do not participate directly in fertilization. 
C ✓:  Correctly describes the process of double fertilization: one male gamete fertilizes the egg, and the other fertilizes the central cell.
D :x: Both male gametes fusing with the central cell is incorrect; one male gamete fuses with the egg cell.
 ## LEARNING AIDS
 **Common Mistakes**:
  1.Confusing the roles of the egg cell and central cell: Remember the egg cell forms the zygote, while the central cell forms the endosperm.
  2.Forgetting the triploid nature of the endosperm: The endosperm is 3n because it results from the fusion of one sperm with two polar nuclei.
 **Quick Tips**:
  1.Visualize the embryo sac and the location of its components to understand the fertilization process.
  2.Remember the key terms: double fertilization, zygote (2n), endosperm (3n).

NISHANTH · Answer

Both fuse with the egg cell.

NISHANTH · Answer

One fuses with the egg cell, and the other fuses with a synergid.

NISHANTH · Answer

The correct Option is "One fuses with the egg cell, and the other fuses with the central cell."

NISHANTH · Answer

Both fuse with the central cell.

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