Which form of sexual reproduction is especially advantageous for animals with limited mobility?

• A. External fertilization
• B. Budding
• C. Internal fertilization
• D. Fragmentation

Answer: (C)

Verified step by step guidance

1. Understand the concept of sexual reproduction: Sexual reproduction involves the combination of genetic material from two parents to produce offspring. It typically requires the union of male and female gametes (sperm and egg).
2. Analyze the mobility of animals: Animals with limited mobility may face challenges in finding mates or ensuring the successful union of gametes. This limitation influences the reproductive strategy they adopt.
3. Define internal fertilization: Internal fertilization occurs when sperm is directly deposited into the female reproductive tract, allowing fertilization to take place inside the body. This method is advantageous for animals with limited mobility because it reduces the dependency on external factors like water or proximity for gamete union.
4. Compare internal fertilization with external fertilization: External fertilization requires the release of gametes into the environment, often water, where fertilization occurs outside the body. This method is less effective for animals with limited mobility as it relies on external conditions and proximity of mates.
5. Evaluate other options: Budding and fragmentation are forms of asexual reproduction, not sexual reproduction. They do not involve the union of gametes and are therefore not relevant to the question. Internal fertilization is the most advantageous form of sexual reproduction for animals with limited mobility.