AP BIOLOGY

Detailed explanation-1: -In flowering plants after fertilisation, the zygote develops into the embryo, the ovules develop into the seed and the ovary develops into the fruit. Also, the sepals, petals and stamens of the flower generally fall off.

Detailed explanation-2: -After fertilisation, the ovule is converted into seed and ovary into fruit.

Detailed explanation-3: -The ovary contains ovules, which develop into seeds upon fertilization. The ovary itself will mature into a fruit, either dry or fleshy, enclosing the seeds. A simple or unicarpellate ovary is formed from a single carpel, an evolutionarily modified leaf. It has one locule (chamber), within which are the ovules.

Detailed explanation-4: -Through the micropyle, the pollen tube enters the ovule and bursts into the embryo sac. Inside the ovule, the male nucleus joins with the egg nucleus to produce a diploid zygote, which eventually enlarges and transforms into a fruit.