Reproduction

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Topics

• Flower structure, male and female gametophytes 14
• Pollination: types, agencies, examples 13
• Outbreeding devices and pollen-pistil interaction 1
• Double fertilization, endosperm and embryo development 6
• Seed and fruit formation and significance 2
• Apomixis, parthenocarpy, polyembryony 4

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• Botany: Reproduction – NEET practice test 1 Practice set · NEET · 19 questions · 19 min
• Botany: Reproduction – NEET practice test 2 Practice set · NEET · 19 questions · 19 min

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• Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A) : Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus.Reason (R) : Presence of more than one nuc… Answer: 1. Both A and R are true and R is the correct explanation of A Key idea: The tapetum is the innermost wall layer of the anther and n... Flower structure, male and female gametophytes 1 answer
• How many meiotic and mitotic divisions need to occur for the development of a mature female gametophyte from the megaspore mother cell in an angiosperm plant? Answer: 3. 1 Meiosis and 3 Mitosis Key idea: Count divisions from megaspore mother cell (MMC) to the 7-celled, 8-nucleate embryo sac. MMC un... Flower structure, male and female gametophytes 1 answer
• Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A) : A typical unfertilised, angiosperm embryo sac at maturity is 8 nucleate and 7-celled.Reason (R) : The egg apparatus has 2 polar… Answer: 3. A is true but R is false Key idea: The mature embryo sac is 7-celled and 8-nucleate, so A is true. The reason is false: the egg a... Flower structure, male and female gametophytes 1 answer
• Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A) : Both wind and water pollinated flowers are not very colourful and do not produce nectar.Reason (R) : The flowers produce enormou… Answer: 2. Both A and R are true but R is NOT the correct explanation of A Key idea: Both A and R are true, but R does not explain A. Wind a... Pollination: types, agencies, examples 1 answer
• Identify the correct description about the given figure: Answer: 2. Wind pollinated plant inflorescence showing flowers with well exposed stamens. Key idea: a dense spike with many long, well-expos... Flower structure, male and female gametophytes 1 answer
• Identify the set of correct statements:A. The flowers of Vallisneria are colourful and produce nectar.B. The flowers of waterlily are not pollinated by water.C. In most of water-pollinated species, the pollen grains are protected from wetting.D. Poll… Answer: 1. B, C, D and E only Key idea: only some aquatic plants are water pollinated, and these flowers are inconspicuous. A is false: Vall... Pollination: types, agencies, examples 1 answer