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Many parasites have evolved to be …….A……...

Many parasites have evolved to be …….A……in such a way that both host and the parasite tend to ……….B…….that is if host evolves special mechanisms for rejecting or resisting the parasists the parasite have to evelve mechanisms to ……..C…… and neutralise them , in order to be successful with the same host species
Choose the correct option for A ,B and C

A

A-host specific ,B-evolve, C-counteract

B

A-host specific ,B-coevolve,C-counteract

C

A-source specific ,B-coevolve,C-counteract

D

A-source specific ,B-evolve ,C-counteract

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to fill in the blanks A, B, and C based on the context of parasitism and co-evolution between hosts and parasites. ### Step-by-Step Solution: 1. **Understanding the Nature of Parasites (Blank A)**: - The question states that "many parasites have evolved to be …….A…… in such a way that both host and the parasite tend to ……….B…." - In the context of parasitism, parasites often evolve to be **host-specific**. This means that a particular parasite is adapted to live on or in a specific host species. - Therefore, for Blank A, the correct option is **"host-specific."** 2. **Understanding Co-evolution (Blank B)**: - The next part of the sentence mentions that both the host and the parasite tend to ……….B……. - The term that fits here is **"co-evolve."** Co-evolution refers to the process where two or more species influence each other's evolutionary trajectory. In this case, as the host evolves defenses against the parasite, the parasite evolves counter-defenses. - Thus, for Blank B, the correct option is **"co-evolve."** 3. **Understanding Parasite Adaptation (Blank C)**: - The last part of the sentence states, "if the host evolves special mechanisms for rejecting or resisting the parasites, the parasite has to evolve mechanisms to ……..C…… and neutralize them." - The appropriate term to fill in this blank is **"counteract."** This means that the parasite must develop strategies to overcome the host's defenses in order to survive and continue to exploit the host. - Therefore, for Blank C, the correct option is **"counteract."** ### Final Answer: - A: host-specific - B: co-evolve - C: counteract
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