Fertilisation is not an obligatory event for fruit production in certain plants. Explain the statement.

Which alloy steel is used for the production of heating coils? Explain the reason.

Indigo Is a Vat-dye. Explain the meaning of the statement.

Assertion: All the events of sexual reproduction prior to the fusion of gametes includes in the post-fertilisation events. Reason: Pre-fertilisation event includes gametogenesis and embryogenesis.