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Which of the following pairs of vector and disease is/are correctly matched?

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Consider the following statements.

1. All echinoderms are not marine.

2. Sponges are exclusively marine.

3. Insects are found in all kinds of habitats.

4. Many primates are arboreal.

Which of the statements given above is/are correct?

Which of the following statements about DNA is/are correct?

1. DNA is the hereditary material of all living organisms.

2. All segments of DNA code for synthesis of proteins.

3. Nuclear DNA is doubled helical with two nucleotide chains which run anti-parallel.

4. DNA is also found in mitochondria.

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