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Reproduction of Animals
- Reproduction is the process by which animals have babies or offspring.
- It involves the coming together of a male and a female to create offspring through mating, a process known as sexual reproduction.
Fertilisation
- Fertilisation occurs during sexual reproduction when a sperm from the male combines with an egg from the female. This process is crucial for the formation of offspring.
- Examples of Egg-Laying Animals:
- Fish
- Reptiles, like snakes
- Birds
- Amphibians, like frogs
- Some animals, such as frogs, lay numerous eggs as not all of them will mature into adults. For instance, a single female frog can lay thousands of eggs.
- In mammals, including humans, after sexual reproduction, the female nurtures the baby or babies within her body until they are sufficiently developed to be born.
- This large egg belongs to an ostrich. Some animals, like lizards, lay much smaller eggs and lay many more of them.
MULTIPLE CHOICE QUESTIONTry yourself: Which of the following animals lays thousands of eggs at a time?
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FAQs on How animals reproduce
| 1. How do animals reproduce? |  |
Ans. Animals reproduce through a process called fertilisation, where a male gamete (sperm) fertilises a female gamete (egg) to form a zygote, which develops into a new individual.
| 2. What is the role of fertilisation in animal reproduction? | |
Ans. Fertilisation is the key process in animal reproduction where genetic material from both parents combines to create a unique individual with a combination of traits from each parent.
| 3. Can all animals reproduce sexually through fertilisation? | |
Ans. No, not all animals reproduce sexually through fertilisation. Some animals, like certain species of worms and insects, can reproduce asexually through processes such as budding or fragmentation.
| 4. How does fertilisation occur in different animal species? | |
Ans. Fertilisation can occur internally or externally in different animal species. Internal fertilisation happens inside the female's body, while external fertilisation occurs outside the body, typically in water for aquatic animals.
| 5. What are some examples of animals that reproduce through fertilisation? | |
Ans. Examples of animals that reproduce through fertilisation include mammals, birds, reptiles, amphibians, and many species of fish and invertebrates.
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May 19, 2026 Last updated
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