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NEET Exam  >  NEET Questions  >  Male gametophyte in angiosperms produces: ... Start Learning for Free
Male gametophyte  in angiosperms produces:              [2015 RS]
  • a)
    Single sperm and vegetative cell
  • b)
    Single sperm and two vegetative cells
  • c)
    Three sperms
  • d)
    Two sperms and a vegetative cell 
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Male gametophyte in angiosperms produces: [2015 RS]a)Single sper...
(d) Two sperms and a vegetative cell are produced by male gametophyte in angiosperms. 
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Most Upvoted Answer
Male gametophyte in angiosperms produces: [2015 RS]a)Single sper...
Explanation:
The retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is known as retention of the archegonium. This phenomenon is first observed in pteridophytes from an evolutionary point of view.

- Pteridophytes are the seedless vascular plants that have a dominant sporophyte generation.
- In pteridophytes, the female gametophyte develops inside the archegonium and fertilization takes place within the archegonium.
- After fertilization, the zygote develops into the young embryo within the archegonium itself.
- The archegonium is retained on the parent sporophyte for some time until the young embryo develops further.
- This retention of the archegonium is an important evolutionary advancement as it provides protection to the developing embryo and enhances its chances of survival.

Therefore, the correct option is D. Pteridophytes.
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Community Answer
Male gametophyte in angiosperms produces: [2015 RS]a)Single sper...
The Male gametophyte in angiosperms has mainly two cells (1) Generative (2) vegetative.
The generative cell divides into two Male gametes (sperm).
So answer is d) two sperms and a vegetative cell.
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Gametophyte is a dominant phase in the life cycle of a bryophyte. It is more conspicuous, long living, independent, green and freely branched whereas, the sporophytic phase is short lived and dependent upon the gametophyte. The main plant body is haploid and bears sex organs i.e., antheridium and archegonium. Antheridium produces a large number of flagellated male gametes called antherozoids and archegonium is flask shaped with tubular neck and swollen venter. The gametophytic plant body of bryophytes is thalloid in liverworts whereas foliose in mosses. In liverworts, the thallus is differentiated into a dorsal photosynthetic and ventral storage region. In mosses, the gametophyte has two growth stages- protonema stage and leafy stage or gametophore.Q. Bryophytes require water in their habitat for

In pteridophytes the sporophyte produces spores through meiosis. The spores are produced by the sporangia in the spore mother cells. These spores germinate to give rise to gametophytes. The gametophytes bear male and female sex organs. Water is required for transfer of antherozoids - the male gametes released from the male sex organ to the mouth of female sex organ. Fusion of male gamete with the egg result in the formation of zygote. Zygote thereafter produces a multicellular well-differentiated sporophyte. In majority of the pteridophytes all the spores are of similar kinds. However, some genera also produce two kinds of spores, macro (larg e) and micro (small) spores. The megaspores and microspores germinate and give rise to female and male gametophytes, respectively. In these plants, the female gametophytes are retained on the parent sporophytes for variable periods. The development of the zygotes develop into young embryos within the female gametophytes. This event is a precursor to the seed habit considered an important step in evolution.Q. In pteridophytes the dominant form of life is the_______.

Gametophyte is a dominant phase in the life cycle of a bryophyte. It is more conspicuous, long living, independent, green and freely branched whereas, the sporophytic phase is short lived and dependent upon the gametophyte. The main plant body is haploid and bears sex organs i.e., antheridium and archegonium. Antheridium produces a large number of flagellated male gametes called antherozoids and archegonium is flask shaped with tubular neck and swollen venter. The gametophytic plant body of bryophytes is thalloid in liverworts whereas foliose in mosses. In liverworts, the thallus is differentiated into a dorsal photosynthetic and ventral storage region. In mosses, the gametophyte has two growth stages- protonema stage and leafy stage or gametophore.Q. Plants which produce spores and embryo but lack vascular tissue and seeds are

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Male gametophyte in angiosperms produces: [2015 RS]a)Single sperm and vegetative cellb)Single sperm and two vegetative cellsc)Three spermsd)Two sperms and a vegetative cellCorrect answer is option 'D'. Can you explain this answer?
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