Question

Given above is the representation of the extent of global diversity of invertebrates. What groups the four portions (A-D) represent respectively?

• A. A - Insects, B - Crustaceans, C - Other animal groups, D - Molluscs
• B. A - Crustaceans, B - Insects, C - Molluscs, D - Other animal groups
• C. A - Molluscs, B - Other animal groups, C - Crustaceans, D - Insects
• D. A - Insects, B - Molluscs, C- Crustaceans, D - Other animal groups

Answer 1

Answer: (D)

A - Insects, B - Molluscs, C- Crustaceans, D - Other animal groups

• Insects are the most diverse group of organisms; the numbers of species of insects are more than any other group.
• In the world, some 900 thousand different kinds of living insects are known. This approximates 80 percent of the world's species. There are more than 100,000 species of Mollusca alive today.
• This makes them the second largest phylum of animals. Phylum Arthropoda is the largest phylum in the animal kingdom, which includes such familiar forms as lobsters, crabs, spiders, mites, insects, centipedes, and millipedes.
• About 84 percent of all known species of animals are members of this phylum.

So, the correct answer is option D.