Botany and Plant Science

A thin hair-like outgrowth of an epidermal cell of a plant root that absorbs water and minerals from the soil is called root hair. They arise from epiblema, which is the outer protective covering of the roots.

This is the main characteristic of stems where the metaxylem is towards the periphery and protoxylem is in the centre.

A leaf gap is a space in the stem of a plant through which the leaf grows. It is found in the nodes.

Lateral roots arise from it. Pericycle is present beneath the endodermis.

It is the main character of monocot root.

This is the correct option. Xylem and phloem comprise the conducting tissues. These are special tubes through which, the transport of materials take place. They are present in all parts of the plant's body.

Hypogynous flowers are not present in Compositae. In epigynous flowers, the hypanthium is fused to the gynoecium and the free parts of the sepals, petals and stamens appear to be attached to the top of the gynoecium as in Compositae family.

Sunflower being an angiosperm has triploid or 3n endosperm.

Here both the anthers and filaments are united Cucurbitaceae.

Pollen grains or microspores are haploid structures formed by meiosis occurring in the microspore mother cell.

In angiosperms only, the seed is formed enclosed in a fruit. This character is not present in gymnosperms where the seed is said to be naked.

A flower that contains only stamen or carpel is called a unisexual flower. 

The pollen tube does not reach the ovary in a straight line. 

Ovary is the enlarged basal portion of the pistil where ovules are produced.