Class 4 Exam > Class 4 Videos > Science for Class 4 > Reproduction in Animals
Reproduction in Animals Video Lecture | Science for Class 4
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FAQs on Reproduction in Animals Video Lecture - Science for Class 4
| 1. What is reproduction in animals? |  |
Ans. Reproduction in animals refers to the biological process by which new individuals of the same species are produced. It involves the production of offspring, either sexually or asexually, to ensure the survival and continuation of the species.
| 2. How do animals reproduce sexually? | |
Ans. Sexual reproduction in animals involves the fusion of male and female gametes (sperm and egg) to form a zygote. This process typically requires the mating or sexual interaction between two individuals of the opposite sex. The male produces sperm, while the female produces eggs, and fertilization occurs when the sperm penetrates the egg, leading to the development of a new individual.
| 3. What are some examples of asexual reproduction in animals? | |
Ans. Asexual reproduction in animals does not involve the fusion of gametes. Some common examples of asexual reproduction in animals include binary fission, budding, fragmentation, and parthenogenesis. In binary fission, a single organism splits into two identical organisms. Budding involves the formation of a smaller offspring that eventually detaches from the parent. Fragmentation occurs when a part of the parent organism breaks off and develops into a new individual. Parthenogenesis is a form of reproduction where females can produce offspring without fertilization.
| 4. How does the process of fertilization occur in animals? | |
Ans. Fertilization in animals occurs when the sperm and egg fuse to form a zygote. It typically happens internally in most animals, where the male transfers the sperm directly into the female reproductive system. In some animals, fertilization may also occur externally, such as in aquatic animals where eggs and sperm are released into the water and meet for fertilization. The fertilized zygote then undergoes further development and eventually forms a new individual.
| 5. What are the different methods of reproduction in animals? | |
Ans. Animals can reproduce through various methods, including sexual reproduction, asexual reproduction, and hermaphroditism. Sexual reproduction involves the fusion of gametes from two individuals, resulting in genetic diversity. Asexual reproduction does not involve gamete fusion and can occur through processes such as budding, fragmentation, or parthenogenesis. Hermaphroditism is a condition where an individual possesses both male and female reproductive organs and can self-fertilize or mate with another individual. The specific method of reproduction varies across different animal species.
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Dec 22, 2024 Last updated |
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