Question
Given below are two statements : One is labelled as Assertion (A) and the other is labelled Reason (R): Assertion (A): The first stage of gametophyte in the life cycle of moss is protonema stage. Reason (R): Protonema develops directly from spores produced in capsule. In the light of the above statements, choose the most appropriate answer from the options given below:
(A) is False but (R) is True.
Both (A) and (R) are True and (R) is the correct explanation of (A).
Both (A) and (R) are True but (R) is not the correct explanation of (A).
(A) is True but (R) is False.
the predominant stage of the life cycle of a moss is the gametophyte which consists of two stages. The first stage is the protonema stage, which develops directly from a spore . Spores are produced within the capsule after meiosis . The fact that the protonema develops directly from the spore (the initial cell of the gametophyte generation) correctly explains why it is the first stage of the gametophyte.
This question aligns with the NEET BIOLOGY syllabus, specifically targeting concepts from Plant Kingdom. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.
More Plant Kingdom Questions
From an evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in:
Which one of the following is the characteristic feature of gymnosperms?
Which of the following is incorrectly matched?
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Selaginella and Salvinia are considered to represent a significant step towards the evolution of seed habit because:
Given are the following five statements (I - V) for your consideration: I: In Equisetum, the female gametophyte is retained on the parent sporophyte II: In Ginkgo, the male gametophyte is not independent III: The sporophyte in Marchantia is more developed than that in Polytrichum IV: Sexual reproduction in Volvox is isogamous V: The spores of slime moulds lack cell walls How many of the above statements is/are correct?
Match List-I with List-II: List-I A. Pteridophyte B. Bryophyte C. Angiosperm D. Gymnosperm List-II I. Salvia II. Ginkgo III. Polystrichum (Polytrichum) IV. Salvinia
A prokaryotic autotrophic nitrogen-fixing symbiont is found in:
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