In a hypothetical plant species, the endosperm is diploid and the embryo is triploid. Which of the following most accurately describes the process leading to this unusual ploidy?
Diploid megaspore mother cell undergoes mitosis to form the embryo sac, and a diploid male gamete fuses with a haploid central cell.
Haploid megaspore mother cell undergoes meiosis to form the embryo sac, and a diploid male gamete fuses with a diploid central cell.
Triploid megaspore mother cell undergoes mitosis to form the embryo sac, and a haploid male gamete fuses with a diploid central cell.
Diploid megaspore mother cell undergoes meiosis to form the embryo sac, and two haploid male gametes fuse with a haploid central cell.
Related Questions
Monoecious plants are?
Cucurbits
coconut
Papaya
both 1 and 2
In oviparous individuals development of zygote takes place
Outside the body
Inside the body
Inside the freshwater
Inside the marine water
Which of the following is not a case of epimorphosis?
Formation of sperms from small clumps of cells
Regeneration of tail in a lizard
Replacement of several arm in starfish
Replacement of limb in salamander
If the parent body is haploid then the gametes are
Haploid
Diploid
Triploid
None of these
Reproduction in larval stage is called
Neoteny
Parthenogenesis
Parthenocarpy
Paedogenesis
Self-fertilisation occurs in the
Bisexual flower
Unisexual flower
Both (a) and (b)
Monoecious flower
Where does syngamy occur in ……..
External medium
Internal medium
Both (a) and (b)
None of these
In a hypothetical plant species, the endosperm is diploid and the embryo is triploid. Which of the following most accurately describes the process leading to this unusual ploidy?
Diploid megaspore mother cell undergoes mitosis to form the embryo sac, and a diploid male gamete fuses with a haploid central cell.
Haploid megaspore mother cell undergoes meiosis to form the embryo sac, and a diploid male gamete fuses with a diploid central cell.
Triploid megaspore mother cell undergoes mitosis to form the embryo sac, and a haploid male gamete fuses with a diploid central cell.
Diploid megaspore mother cell undergoes meiosis to form the embryo sac, and two haploid male gametes fuse with a haploid central cell.
Which of the following plants bears only male or female flowers on the same individual?
Date palm
Maize
Papaya
Marchantia
Parameters of old age are
End of reproductive phase
Concomitant changes in the body
Slowing down of vital process
All of the above
