NEET BIOLOGY

Detailed explanation-1: -Apomixis in plant means development of new plant without fusion of gametes. Although seeds, in general, are the products of fertilization, a few flowering plants such as Asteraceae and grasses, have evolved this special mechanism. Apomixis is a form of asexual reproduction that mimics sexual reproduction.

Detailed explanation-2: -Assertion: In plants, apomixis is a form of asexual reproduction that mimics sexual reproduction. Reason: Apomixis involves the production of seeds without the fusion of gametes.

Detailed explanation-3: -Apomixis (asexual seed formation) is the result of a plant gaining the ability to bypass the most fundamental aspects of sexual reproduction: meiosis and fertilization. Without the need for male fertilization, the resulting seed germinates a plant that develops as a maternal clone.

Detailed explanation-4: -Apomixis involves the production of unreduced (diploid) female gametes that retain the genotype of the parent plant (apomeiosis), followed by parthenogenetic development of the egg cell into an embryo and the formation of functional endosperm.

Detailed explanation-5: -So, the correct answer is ‘Without fertilisation diploid embryo forms’.