ABU Biology 2019/2020 Past Questions

The wave-like motion of the muscles of the oesophagus to push wach bolus of food downwards is known as

In which of the following levels of classification are the members most similar?

Conduction of water and mineral salts through the xylem vessels is enhanced because the xylem cells are

The ability of the cockroach to live in cracks and receives is enhanced by the possession of

Which of the following methods of reproduction is common in paramecium and amoeba?

An interlocking form / pattern of feeding relationship is called

When the body fluid of an organism has the same concentration as that of the external medium such medium is said to be _____________

Which of these types of skeleton is most appropriate to the cockroach

The anal and dorsal fins of fish are used for:

Which of these a not true of the insect? The possession of