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Reproduction in Plants and Animals | Science - Points to Remember | 10th Science : Chapter 17 : Reproduction in Plants and Animals

Chapter: 10th Science : Chapter 17 : Reproduction in Plants and Animals

Points to Remember

Organisms such as hydra can regenerate if they are broken into pieces. They can also give out buds which mature into new individuals.

Reproduction in Plants and Animals (Science)

Points to Remember

·                 Many bacteria and protozoa simply divide into two or more daughter cells by fission.

·                 Organisms such as hydra can regenerate if they are broken into pieces. They can also give out buds which mature into new individuals.

·                 Reproduction in flowering plants involves transfer of pollen grains from the anther to the stigma which is referred to as pollination. This is followed by fertilization.

·                 Sexual reproduction involves the fusion of two haploid gametes (male and the female gametes) to form a diploid individual (zygote).

·                 The formation of the sperm in male and the ovum in female is called gametogenesis. It involves spermatogenesis (formation of spermatozoa) and oogenesis (the formation of ova).

·                 The cyclic events that take place in a rhythmic manner during the reproductive period of a woman’s life is called menstrual cycle.

·                 The process of attachment of the blastocyst to the uterine wall (endometrium) is called implantation.

·                 The placenta is a temporary association between the developing embryo and maternal tissues.

·                 Parturition is the expulsion of young one from the mother’s uterus.

·                 Contraception is one of the best birth control measures. The devices used for contraception are called contraceptive devices.

 



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