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What is parthenogenesis, syngamy and parturition?
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What is parthenogenesis, syngamy and parturition?
Parthenogenesis is the method of obtaining a fruit even though the fertilisation does not take place. This is not to be considered as asexual reproduction. Parthenogenesis is a sort of unisexual reproduction involving one parent either with genital organs of single sex or the gametes produced are sterile so that there is no production of viable seeds. Unfertilised ovary develops into fruit.
Double fertilisation is a characteristic of angiosperms. Here two sperm nuclei from each pollen tube fertilise two cells in an ovary. One sperm fertilizes the egg cell, forming a diploid (2n) zygote from which the embryo develops. This fusion is called syngamy or fertilization. It is also known as generative fertilisation or true fusion.
Parturition is the process of delivering the baby from the uterus into outside environment by a female. The contractions and dilations together are called as labour pains. Labour pains are brought about by the hormone oxytocin. Parturition helps in expelling the baby as well as the placenta.
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Most Upvoted Answer
What is parthenogenesis, syngamy and parturition?
Let's clear all terms one by one 1)parthenogenesis:: it is nothing but the type of asexual reproduction,,,,,,,,, look when female egg without fertilization with male gamete produce new individual organism from that single a egg it is called as a parthenogenesis .&___that means generation of new individual without fertilization...or fusion of gametes....
for example in honey bee single female egg converted into haploid drone (male worker) it is a example of parthenogenesis......
2) syngamy is nothing but the fertilization(fusion of male and female gametes)
3) parturition means giving birth to young ones (delivery of baby)
👍👍👍👍👍👍👍👍✌✌
for example in honey bee single female egg converted into haploid drone (male worker) it is a example of parthenogenesis......
2) syngamy is nothing but the fertilization(fusion of male and female gametes)
3) parturition means giving birth to young ones (delivery of baby)
👍👍👍👍👍👍👍👍✌✌
Community Answer
What is parthenogenesis, syngamy and parturition?
Parthenogenesis (Virgin birth)
It is a modification of sexual reproduction in which an egg develops into a complete offspring without fertilization. It is monoparental. Parthenogenesis was discovered by Bonnet (1745).
Occurrence : Parthenogenesis is found in many non vertebrates such as rotifers, aphids, bees and crustaceans. It also occur in a few vertebrates.
Syngamy : It involves the fusion of two entire gametes to form a zygote. The fusion nucleus of zygote called synkaryon. It is further of two types with regard to the source of fusing gametes :
Endogamy : It involves self-fertilization, i.e., the fusion of two gametes of the same parent. It is, thus uniparental. e.g., Taenia.
Exogamy : It involves cross-fertilization, i.e., the fusion of two gametes formed by different parents. It is, thus, biparental. e.g., frog rabbit and man. Syngamy is also of two kinds :
Isogamy : The fusing gametes are similar morphologically as in Monocystis (a protozoans). Such gametes are known as isogametes, and their fusion is termed isogamy. Although the isogametes are similar in structure, they have behavioural differences. e.g., forminifera, monocystis.
Anisogamy or Heterogamy : The fusing gametes are different in form, size structure and behaviour as in frog and humans. Such gametes are known as anisogametes, or heterogametes, and their fusion is termed anisogamy, or heterogamy. e.g., Plasmodium, vertebrates.
Parturition- (Science: obstetrics) The act or process of given birth to a child. Origin: L. Parturitio The process of giving birth.The process of giving birth and creating offspring.
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What is parthenogenesis, syngamy and parturition?
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What is parthenogenesis, syngamy and parturition? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about What is parthenogenesis, syngamy and parturition? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is parthenogenesis, syngamy and parturition?.
What is parthenogenesis, syngamy and parturition? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about What is parthenogenesis, syngamy and parturition? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is parthenogenesis, syngamy and parturition?.
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