Tag: absorption of water from the soil

The edible part of sweet potato is a modified adventures fleshy root which is called as tuberous root or single root tuber. Due to storage of food, the adventitious roots become thick and fleshly. In sweet potato, the swollen roots do not occur all over the tuber.

Red root is present in the plant beetroot. This is due to the presence of a substance named betacyanin which gives its color.

Stilt roots occur in sugarcane/Maize because these stems are weak and need support where adventitious roots grow from the nodes obliquely downwards towards the ground.

Roots do not show the distinction of nodes and internodes because the meristematic part of the roots is at the tip, but not in the middle showing differentiation. Roots have endogenous primary secondary and tertiary roots and rootlets.

A root cap is a protective covering over the tip of the root. Pandanus is known to have multiple roots because it has multiple prop roots covered with root caps.

Hygroscopic roots occur means water absorbing roots from the atmosphere. Hygroscopic roots occur in Vanda because it is an epiphyte which absorbs moisture from the atmosphere as its source of water.

Answer is option A i.e. "2,1,4,3"
Four zones in the root from apex to base are arranged in the sequence. Firstly, new root tips grow continuously throughout the life of the plant which is due to Meristematic zone. This in later growth phases provide the surfaces through which most of the nutrients and water move, hence followed by Mineral absorption zone and Water absorption zone and finally forming Maturation zone.

Regions of root from base to root tip are maturation zone , elongation zone and cell division zone and root cap because the meristematic tissue is present at the tip of the root above the root cap which grows downwards as the upper layers mature into permanent structures.

Origin of lateral roots is endogenous in origin because for absorption of water and minerals the roots should contain vascular structures which are in the deeper layers.

The main root of tap root system represents radicle because, in a seed, radicle is the part which is destined to produce where it grows and it produces branches from the main root.