NEET Exam > NEET Videos > NCERT Explained for NEET: Reproduction In Organisms
NCERT Explained for NEET: Reproduction In Organisms Video Lecture
FAQs on NCERT Explained for NEET: Reproduction In Organisms Video Lecture
| 1. What is the importance of reproduction in organisms? |  |
Ans. Reproduction is essential for the survival and continuation of any species. It allows organisms to produce offspring, ensuring the preservation of their genetic material and the continuation of their species. Reproduction also enables the introduction of genetic variations through processes like sexual reproduction, which can increase the adaptability and survival chances of a species.
| 2. What are the different modes of reproduction in organisms? | |
Ans. Organisms can reproduce through various modes, including sexual reproduction and asexual reproduction. Sexual reproduction involves the fusion of gametes from two parents, resulting in the formation of genetically diverse offspring. Asexual reproduction, on the other hand, does not involve the fusion of gametes and leads to the production of genetically identical offspring.
| 3. How does sexual reproduction occur in organisms? | |
Ans. Sexual reproduction involves the fusion of male and female gametes to form a zygote. In most organisms, the male gamete is the sperm, produced by the male reproductive system, and the female gamete is the egg or ovum, produced by the female reproductive system. The sperm and egg unite during fertilization, forming a zygote which develops into a new individual.
| 4. What are the advantages and disadvantages of sexual reproduction? | |
Ans. Sexual reproduction offers several advantages, such as genetic variation, which enhances the adaptability and survival chances of a species. It also allows for the repair of damaged DNA through recombination during meiosis. However, sexual reproduction requires the presence of two parents, which can limit the population growth rate compared to asexual reproduction. It also requires the time and energy investment in finding mates and the risk of sexually transmitted diseases.
| 5. How does asexual reproduction occur in organisms? | |
Ans. Asexual reproduction involves the production of offspring without the involvement of gametes or the fusion of genetic material from two parents. It occurs through various methods such as binary fission, budding, fragmentation, and vegetative propagation. In these processes, a single parent organism gives rise to genetically identical offspring, which can quickly populate an area but lack genetic variation.
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Nov 24, 2024 Last updated |
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