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Sexual Reproduction Video Lecture - Science Class 8
FAQs on Sexual Reproduction
| 1. What is sexual reproduction? |  |
Ans. Sexual reproduction is a biological process where two parents contribute genetic material to produce offspring. It involves the fusion of gametes, specialized cells that carry half the genetic information of each parent, resulting in genetic diversity in the offspring.
| 2. What are the advantages of sexual reproduction? | |
Ans. Sexual reproduction offers several advantages. Firstly, it leads to genetic diversity, which increases the chances of survival for a species in changing environments. Secondly, it allows for the repair of damaged DNA through recombination. Lastly, sexual reproduction promotes the elimination of harmful mutations from the population.
| 3. What are the different types of gametes involved in sexual reproduction? | |
Ans. In sexual reproduction, there are two types of gametes involved – sperm and eggs. Sperm is the male gamete, produced by the male reproductive system, while eggs (or ova) are the female gametes, produced by the female reproductive system. These gametes fuse during fertilization to form a zygote, which develops into a new individual.
| 4. How does sexual reproduction contribute to genetic diversity? | |
Ans. Sexual reproduction contributes to genetic diversity through two main mechanisms: independent assortment and genetic recombination. Independent assortment occurs during the formation of gametes, where chromosomes randomly align and segregate, creating different combinations of genetic material. Genetic recombination, on the other hand, involves the exchange of genetic material between homologous chromosomes during meiosis, resulting in further variation.
| 5. Can sexual reproduction occur in all organisms? | |
Ans. No, sexual reproduction does not occur in all organisms. While most plants and animals reproduce sexually, there are several organisms, such as bacteria and some fungi, that primarily reproduce asexually. Asexual reproduction involves the production of offspring without the involvement of gametes or the fusion of genetic material from two parents.
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Apr 20, 2026 Last updated
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