Practice MCQ Questions and answers on Biology-GK

Psidium guajava, the common guava, yellow guava, or lemon guava, is an evergreen shrub or small tree native to the Caribbean, Central America and South America.

Grevillea robusta, commonly known as the southern silky oak, silk oak or silky oak, silver oak or Australian silver oak, is a flowering plant in the family Proteaceae. It is a tree, the largest species in its genus but is not closely related to the true oaks, Quercus.

Artocarpus integra is the scientific name of jack fruit.

The characteristic features of fishes are aquatic, streamlined body with scales, 2-chambered heart and gills. Bombay duck, salmon and Hippocampus exhibit these features thus they belong to the class Pieces. Bombay duck or bummalo is a 'lizardfish'. It is native to the water between Mumbai and Kutch in the Arabian sea and a small numbers are also found in the Bay of Bengal.
Salmon is the common name for several species of fishes.

Gossypium Herbaceum is scientific name of "Cotton".

Nucleus is specific to eukaryotic cell.

The statement that is true of the kingdom protists is that all are eukaryotic.

Anatomy is the branch of biology concerned with the study of the structure of organisms and their parts.

Biology is a natural science concerned with the study of life and living organisms.

Cockroach has blood known as homocoel, snails and kangaroos also have blood in their bodies. But hydra does not contain any blood but still it respires. It does not have any respiratory organs but it respires and thus exchanges gases throughout its body.