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These parasites cannot survive without h...

These parasites cannot survive without host :

A

Facultative

B

Obligate

C

Brood

D

Hyperparasites

Text Solution

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The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Parasites**: - Parasites are organisms that live on or inside another organism (the host) and depend on it for their nutrition, shelter, or other life processes. 2. **Types of Parasites**: - There are different types of parasites, and they can be classified based on their dependency on hosts. 3. **Facultative Parasites**: - These parasites can survive without a host. They are not strictly dependent on a host for their survival. Therefore, they do not fit the criteria of parasites that cannot survive without a host. 4. **Obligate Parasites**: - These are true parasites that cannot survive without a host. If they are removed from their host's body, they will die. This type of parasite is what the question is asking for. 5. **Brood Parasites**: - Brood parasites, such as certain birds, lay their eggs in the nests of other birds. While they depend on other birds for the care of their young, they can survive without a host. Hence, they do not meet the criteria of being unable to survive without a host. 6. **Hyperparasites**: - These are parasites that live on or in other parasites. Even though they depend on another parasite, they can still survive without it. Thus, they are not the correct answer either. 7. **Conclusion**: - The correct answer to the question "These parasites cannot survive without host" is **Obligate Parasites**. ### Final Answer: **Obligate Parasites** are the parasites that cannot survive without a host. ---
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