If the bark and phloem tissue of a woody shoot are peeled off by ringing, the whole plant will die eventually die because?

Human beings require vitamins in their diet because vitamins

Milk can be pasteurized by

In Mucor or Rhizopus carbohydrate is absorb in the form of

Some of the features of an animal are scales, teeth, nares and backbone. The animal is likely to be a

Which of the following spreads malaria in Nigeria?

One of the following statement is NOT true of spirogyra

The vacuole of a plant cell is

Which one of the following animals is NEVER a secondary host of tapeworms?