Which of the following are true with reference to taxonomical aids?
1. Separate taxonomic keys are required for each taxonomic category.
2. Herbarium is a store house of collected plant and animal specimens.
3. Each statement in the key is called couplet.
4. Keys are used for identification purpose.

Options

A. 1 and 2
B. 1 and 4
C. 1 and 3
D. 3 and 4

Answer

B