Answer: Endosperm is not fully consumed during embryo development.
- A The cotyledons completely absorb all of the endosperm
- B Endosperm is not fully consumed during embryo development
- C There is no double fertilisation
- D The nucellus replaces the endosperm
Correct answer: B. Endosperm is not fully consumed during embryo development
Explanation: Albuminous (endospermic) seeds retain part of the endosperm at maturity because it is not completely used up during embryo development, as in castor and wheat.
Double fertilisation in angiosperms: one male gamete fuses with the egg to form the diploid zygote (syngamy), while the second fuses with the two polar nuclei to form the triploid primary endosperm nucleus (triple fusion). Image: Triploid, CC BY 3.0, via Wikimedia Commons.
Concept context
Flower structure, pollination, double fertilization, and seed/fruit development - the highest-scoring Class 12 biology chapter in NEET.
Read the full Sexual Reproduction in Flowering Plants notes →