Practice MCQ Questions and answers on Biology-GK

Answer: Option C

Cambium, in plants, is a layer of actively dividing cells between xylem (wood) and phloem (bast) tissues.
It is responsible for the secondary growth of stems and roots (secondary growth occurs after the first season and results in an increase in thickness).
Hence, Cells which takes part in secondary growth are named as Cambium.
So, the correct answer is 'Cambium'.

Answer: Option B

Bones join with muscles with the help of tendon.

Answer: Option A

The tissue which allows aquatic plants to float is Aerenchyma. Basically aerenchyma is parenchyma tissue in aquatic plants. The cells of aerenchyma make a network which has wide air spaces or air cavities for gaseous exchange. These air cavities make the plant light and buoyant and hence, plants can float easily in water.