Check sibling questions

Sexual Reproduction

  • In sexual mode of reproduction, two parents of different sexes i.e. male and female give rise to a new individual. 
  • Sexual reproduction involves the fusion of male gamete/male sex cell and female gamete/female sex cel l in order to form a new cell called zygote .

The process of fusion of male and female gamete is known as fertilization .

male-gametes-and-female-gametes-fertilized-cell---teachoo.jpg

Sexual vs Asexual Reproduction- Which is better?

  • In asexual reproduction, genetically identical offsprings (also called clones ) are produced and the only source of variation is any inaccuracy in copying DNA
  • Therefore, we can say that the organisms which reproduce asexually have very slight variations in their DNA.
  • Since the environment is constantly changing, it is important for an organism to change accordingly in order to survive. So, these variations are extremely important. 
  • Also, if all the organisms of a given species are exactly identical, then their extinction to adverse conditions becomes higher.

ASEXUAL REPRODUCTION TAKES PLACE BY SIX DIFFERENT METHODS - Teachoo.jpg

  • In case of sexual reproduction, the fusion of male and female gametes gives rise to the offspring which is similar but not completely identical to the parent. 
  • This is because the offspring gets DNA from both its parents , so the chances of variation are very high. 
  • Therefore the species are able to adapt to the changing environments faster.
  • Hence, we can say that sexual reproduction provides genetic diversity which is important for survival.

OFFSPRINGS ARE NOT COMPLETELY IDENTICAL IN SEXUAL REPRODUCTION - Teachoo.jpg

Are ads bothering you?


Transcript

ASEXUAL REPRODUCTION TAKES PLACE BY SIX DIFFERENT METHODS Fission Parent Hydra Developing Bud New Bud New Hydra Budding Parent Cell Nucleus Divides Cytoplasm Divides Two Daughter Cells Fragmentation Nucleus Septa Spiral Chloroplast Spore Formation Hypha Sporangium Spores Vegetative Propagation Parent Plant Cut at slant Cutting Rooting Hormone Regeneration Regeneration Regeneration Regeneration OFFSPRINGS ARE NOT COMPLETELY IDENTICAL IN SEXUAL REPRODUCTION

CA Maninder Singh's photo - Co-founder, Teachoo

Made by

CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Economics, Accounting and English at Teachoo