In terms of evolution, what is the significance of homology between a human hand and a wing of a bird?

What is the role of saliva in the digestion of food?

Updated 1/12/2026

The flow of energy in the food chain is unidirectional. Why?

Updated 1/12/2026

Give one example of each of the characters that are inherited and the ones that are acquired in humans. Mention the difference between the inherited and the acquired characters.

Updated 1/12/2026

Explain the cause of shoots of the plant bending towards light?

Updated 1/12/2026

• What is genetics? • Give the common name of the plant on which Mendel performed his experiments. • What for did Mendel use the term factors and what are these factors called now? • What are genes? Where are the genes located?

Updated 1/12/2026