Biology Past Questions and Answers

Secondary thickening in dicotyledonous stem is controlled by the

2H[sub]2[/sub] → 2H[sub]2[/sub] + O[sub]2(g)[/sub]. The equation above represents a part of the light stage of photosynthesis. Which of the following must be presents for this reaction to occur?

In an experiment to investigate the effect of nitrogen on the growth of plants, the substrate should be a medium of

Which vitamin plays an important role in blood clotting?

The mammalian organ which acts both as a digestive and as an endocrine organ is the