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Read the below statements and select the...

Read the below statements and select the appropriate option.
a. Experimental removal of Pisaster resulted in the extinction of more than species of invertebrates.
b. Nearly 20 percent of all insects are known to be phytophagous.
c Predators help to maintain species diversity.

A

Both a and c are correct

B

b is correct but c is incorrect

C

a is correct but b is incorrect

D

only c is correct

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we will analyze each statement provided and determine their validity based on biological principles. ### Step-by-Step Solution: 1. **Analyze Statement A**: - The statement claims that the experimental removal of Pisaster (a type of starfish) resulted in the extinction of more than one species of invertebrates. - This statement is **correct**. Research has shown that the removal of Pisaster from its habitat led to a significant decline in species diversity among invertebrates. Pisaster is a keystone species, meaning its presence is crucial for maintaining the structure of the ecosystem. **Hint**: Consider the role of keystone species in ecosystems and their impact on biodiversity. 2. **Analyze Statement B**: - This statement asserts that nearly 20 percent of all insects are known to be phytophagous (plant-eating). - This statement is **incorrect**. The actual figure is closer to 25% of all insects that are phytophagous, meaning that this statement does not accurately represent the data. **Hint**: Look for the correct percentage of phytophagous insects in entomological studies. 3. **Analyze Statement C**: - The statement indicates that predators help to maintain species diversity. - This statement is **correct**. Predators play a vital role in controlling prey populations, which helps to maintain a balance in the ecosystem and supports species diversity. **Hint**: Think about how predator-prey relationships contribute to ecosystem stability. ### Conclusion: - Based on the analysis: - Statement A is correct. - Statement B is incorrect. - Statement C is correct. ### Final Answer: - The correct option is **Option 1: Both A and C are correct**.
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