Flower Structure & Fruit Formation — NEET Biology
📚 Practice ConceptThe flower is a modified shoot, meant for sexual reproduction. The flowers are arranged in different types of inflorescences. They exhibit enormous variation in structure, symmetry, position of ovary in relation to other parts, arrangement of petals, sepals, ovules etc. After fertilisation, the ovary is modified into fruits and ovules into seeds. Seeds either may be monocotyledonous or dicotyledonous. They vary in shape, size and period of viability. The floral characteristics form the basis of classification
Which of the following statements about the parts and arrangements within a typical flower is/are correct? S1: Aestivation describes the mode of arrangement of sepals or petals in the floral bud with respect to the other members of the same whorl. S2: The androecium is composed of stamens, each having a filament and an anther, where pollen grains are formed in pollen-sacs. S3: Epiphyllous stamens are those attached to the petals, as specifically seen in brinjal. S4: When more than one carpel is present and they are fused, the ovary is termed apocarpous, as in mustard and tomato. S5: Placentation refers to the arrangement of ovules within the ovary, with marginal, axile, and parietal being common types.
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