Practice MCQ Questions and answers on Biology-GK

The collenchyma is thickened due to deposition of pectin and cellulose.

Sclerenchyma cells also provide support to the plant, but unlike collenchyma cells, many of them are dead at maturity.

Tracheophytes have vascular tissues i.e .xylem and phloem vessel.

Histology is the branch of biology concerned with the composition and structure of plant and animal tissues in relation to their specialized functions.

Parenchyma cells with chloroplast to carry out photosynthesis are called as chlorenchyma cells. Therefore, option D is correct.

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'.

Bones join with muscles with the help of tendon.

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.

Xylem is one of the two types of transport tissue in vascular plants, phloem being the other. The basic function of xylem is to transport water from roots to stems and leaves, but it also transports nutrients.

Connective tissue is the most abundant tissue type in the body. In general, connective tissue consists of cells and an extracellular matrix.