EVERYDAY SCIENCE

Detailed explanation-1: -In plants, each part can independently take in oxygen from the air and give out carbon dioxide. Like all other living cells of the plants, the root cells take up air from the air spaces present between the soil particles.

Detailed explanation-2: -However, while the crown of a tree is usually surrounded by open air, roots need a source of oxygen in the soil in order to grow. In the ground, air and water are held in little pockets called soil pores. If the soil is dense and compacted (with no soil pores), there will not be enough oxygen available for respiration.

Detailed explanation-3: -As mentioned above, roots respire too! One of the functions of the substrate is to serve as a site for air exchange between the root zone and atmosphere. In other words, roots breathe oxygen like we do.

Detailed explanation-4: -The correct option is B True Roots take up air from air spaces present between soil particles.

Detailed explanation-5: -Best Answer (b) Roots of plant have minute hair like appendages or outgrowths called root-hair. These root-hair penetrate soil and take up air from the air spaces present between the soil particles.