ANIMAL REPRODUCTION AND DEVELOPMENT
ASEXUAL REPRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A new organism is created from the roots, stems or leaves.
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Organisms can be produced from unfertilized eggs.
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develops an outgrowth which is detached from the parent and becomes a new individual.
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A new organism is created from the roots, stems or leaves.
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Detailed explanation-1: -Parthenogenesis is a form of reproduction in which an egg can develop into an embryo without being fertilized by a sperm. Parthenogenesis is derived from the Greek words for “virgin birth, ” and several insect species including aphids, bees, and ants are known to reproduce by parthenogenesis.
Detailed explanation-2: -Parthenogenesis is a unique form of reproduction where embryonic development occurs in unfertilized eggs. Beatty (1967) defined parthenogenesis as ‘the production of an embryo from a female gamete without any genetic contribution from a male gamete and with or without eventual development into an adult’.
Detailed explanation-3: -Thelytoky is a type of parthenogenesis in which females are produced from unfertilized eggs, as for example in aphids. Deuterotoky is when parthenogenetic reproduction can give rise to both genders, male and female. Q.
Detailed explanation-4: -In the insect order Hymenoptera (which includes bees, wasps, and ants), parthenogenesis can take one of three forms: arrhenotoky, thelytoky, and deuterotoky.
Detailed explanation-5: -It is a method in which a new individual developed without fertilization. Here, males do not have any role to play and only female gametes develop into new offspring. Examples of plants showing parthenogenesis include honey bees, ants, birds.