Q.4 Which one of the following features distinguishes between gymnosperms and angiosperms?
(A) Seed formation (B) Vascular tissues
(C) Seed cover (D) Gamete production
Gymnosperms vs Angiosperms: Seed Cover Distinguishes Them in CSIR NET Life Sciences
Gymnosperms and angiosperms differ primarily in seed enclosure, making seed cover the key distinguishing feature for CSIR NET exam questions. This MCQ tests understanding of plant kingdom classifications.
Question Analysis
The query asks: “Which one of the following features distinguishes between gymnosperms and angiosperms? (A) Seed formation (B) Vascular tissues (C) Seed cover (D) Gamete production.” Both groups are seed-producing vascular plants, but angiosperms have seeds enclosed in fruits while gymnosperms feature naked seeds on cones.
Option Breakdown
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(A) Seed formation: Incorrect, as both produce seeds from ovules after fertilization, though angiosperms undergo double fertilization absent in gymnosperms.
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(B) Vascular tissues: Incorrect, since both possess xylem and phloem; angiosperms have vessels, but this is not the primary distinction.
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(C) Seed cover: Correct, gymnosperms have naked seeds without ovary enclosure, while angiosperms enclose seeds in fruits for protection.
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(D) Gamete production: Incorrect, both produce gametes via gametophytes, differing mainly in structures like pollen cones versus flowers.
Gymnosperms and angiosperms seed cover marks the core difference in plant biology for CSIR NET aspirants. Gymnosperms bear naked seeds on cones, aiding wind dispersal, while angiosperms protect seeds within fruits from ovary development. This feature evolved for better embryo safeguarding in angiosperms.
