NEET BIOLOGY

Detailed explanation-1: -The young unopened flower is called bud. A bud especially in cold climates are covered by scales which tightly bind the sensitive part of the bud. Plumule is the first bud of the plant.

Detailed explanation-2: -The young unopened flower is termed as bud. A bud eventually develops into a flower.

Detailed explanation-3: -Most flower buds will be found at terminal ends or on flowering stalks, making it easier to identify them. These would be terminal buds, while those between the leaf and stem are called axillary buds. Adventitious buds are those that form as a result of injury.

Detailed explanation-4: -The sepals (calyx) resemble leaves because of their generally green colour. From their base and along most of their length, sepals remain either separate or marginally fused. The sepals enclose and protect the unopened flower bud.

Detailed explanation-5: -Finally, the term cleistogamy (adj. cleistogamous) refers to a flower in which the perianth remains closed, such that pollen produced from within the flower pollinates only the stigma(s) of that flower.