Question

In some plants the female gamete develops into embryo without fertilization. This phenomenon is
known as?
A) Autogamy
B) Parthenocarpy
C) Syngamy
D) Parthenogenesis

Answer 1

Hint: Generally, it is natural from a sexual reproduction in which the growth and development of an embryo can take place without fertilization by sperm. It occurs naturally in some plants and some invertebrate animal species. It can also occur without meiosis through mitotic oogenesis.

Complete step by step answer: The parthenogenesis is the process in which the formation of an organism from an unfertilized egg takes place. The term parthenogenesis was coined by Charles Bonnet. It is also called the virgin birth. parthenogenesis is of the following three kinds:
1) Arrhenotoky: male develops parthenogenetically.
2) Thelytoky: female develops parthenogenetically.
3) Amphytoky: Parthenogenesis bearing about any sex depending upon ecological conditions.
Additional information:
Parthenogenesis is in some cases viewed as an Asexual type of reproduction; although it might be all the more precious be described as an “incomplete type of sexual propagation” since offspring of parthenogenetic species create from gametes. Gametes are receptor cells that result from meiosis in which a specific cell division with a diploid or double set of chromosomes goes through two fissions of its nucleus. Meiosis offers ascend to four gametes Or sex cells, which are haploid in that each possesses half the number of chromosomes of the original cell. The female gamete develops into an embryo without fusing with the male gamete, that is in the absence of fertilization.
Thus, the answer is option D: Parthenogenesis

Note: parthenogenesis can operate on either a haploid or diploid cell. In haploid parthenogenesis and uncommon types of parthenogenesis that happen in a couple of types of honeybees, nematodes, and plants, offspring are created from haploid eggs to deliver haploid adults. Then again, the cycle of having diploid parthenogenesis, more common and varied from the phenomenon, may continue along two pathways. The second step of diploid parthenogenesis is apomixis, forgoes complete meiosis altogether.