Odia Medium Class 8 Science Chapter 6 Question Answer

BSE Odisha Class 8 Science Chapter 6: Reproduction in Animals (ପ୍ରାଣୀଙ୍କ ପ୍ରଜନନ)

Mastering the concepts of Reproduction in Animals is essential for understanding the continuity of life. At Odisha Board Solutions, we provide simplified, stepwise answers for Class 8 Science Chapter 6, specifically updated for the 2026-27 session.

1. Modes of Reproduction (ପ୍ରଜନନର ପ୍ରକାର)

Reproduction is the process by which living organisms produce young ones of their own kind. There are two main modes:

  • Sexual Reproduction (ଲିଙ୍ଗୀୟ ପ୍ରଜନନ): Involves the fusion of male and female gametes.

  • Asexual Reproduction (ଅଲିଙ୍ଗୀୟ ପ୍ରଜନନ): Only a single parent is involved. Common methods include:

    • Budding (କୋରକୋଦ୍‌ଗମ): Seen in Hydra.

    • Binary Fission (ଦ୍ୱି-ବିଭାଜନ): Seen in Amoeba.

2. Sexual Reproduction in Humans

This process involves the male reproductive system (sperm) and the female reproductive system (ova/eggs).

  • Fertilization (ନିଷେକ): The fusion of a sperm with an egg to form a Zygote.

    • Internal Fertilization: Occurs inside the female body (e.g., humans, cows).

    • External Fertilization: Occurs outside the female body (e.g., frogs, fish).

  • Embryo Development: The zygote divides repeatedly to form an embryo, which then develops into a foetus.

3. Oviparous vs. Viviparous Animals

In the BSE Odisha exams, differentiating between these two is a high-probability question:

Animal Type Definition Examples
Viviparous (ଜରାୟୁଜ) Animals that give birth to young ones directly. Humans, Dogs, Cats.
Oviparous (ଅଣ୍ଡଜ) Animals that lay eggs which later hatch into young ones. Birds, Frogs, Snakes.

4. Metamorphosis (ରୂପାନ୍ତରଣ)

The transformation of the larva into an adult through drastic changes is called Metamorphosis. A classic example taught in Class 8 is the life cycle of a frog:

  • Egg $\rightarrow$ Tadpole $\rightarrow$ Adult Frog.

5. Download Class 8 Science Chapter 6 PDF (Odia Medium)

We provide a FREE PDF Download of the Class 8 Science Chapter 6 Questions and Answers. This PDF ensures that all biological diagrams.

Revision Tip: Be sure to practice the diagram of the Human Sperm and the Life Cycle of a Frog, as these are frequently asked in Summative Assessments (SA2).