Why is endosperm in angiospermic ovule considered as more efficient?

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Angiosperms**: Angiosperms are flowering plants that undergo a unique reproductive process. One of the key features of angiosperms is the formation of endosperm within the ovule.

2. **Double Fertilization**: In angiosperms, the process of fertilization is known as double fertilization. This involves the fusion of one male gamete with the egg cell to form the zygote and another male gamete with the two polar nuclei to form the primary endosperm nucleus.

3. **Formation of Endosperm**: The primary endosperm nucleus is triploid (3n) because it results from the fusion of one haploid male gamete (n) with two haploid polar nuclei (n + n). This triploid endosperm is crucial for the nourishment of the developing embryo.

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