EVERYDAY SCIENCE

Detailed explanation-1: -Plants which do not have roots, stems, and leaves are called thalloid or foliose plants.

Detailed explanation-2: -A plant without roots cannot survive because primary function of the roots is to absorb water and nutrients which are essential for survival of the plant. Apart from that, it helps in anchoring the plant to the soil.

Detailed explanation-3: -Examples include trees and many shrubs with woody stems that grow very tall and grasses, dandelions, and tomato plants with soft stems. Do not have a well-developed system for transporting water and food; therefore, do not have true roots, stems, or leaves. Examples include mosses, liverworts, and hornworts.

Detailed explanation-4: -Cuticle is a waxy layer which is formed above epidermis of stem and leaves. This layer checks the loss of water from the plants. If waxy cuticle is present on roots, it prevents absorption of water and salts from soil, hence cuticle is absent in roots.

Detailed explanation-5: -The xylem transports water and minerals from the roots up the plant stem and into the leaves. In a mature flowering plant or tree, most of the cells that make up the xylem are specialised cells called vessels. Vessels: Lose their end walls so the xylem forms a continuous, hollow tube.