LIFE SCIENCE

Detailed explanation-1: -Essentially all of the water used by land plants is absorbed from the soil by roots. A root system consists of a complex network of individual roots that vary in age along their length. Roots grow from their tips and initially produce thin and non-woody fine roots.

Detailed explanation-2: -Plants absorb water and nutrients through the xylem: a tissue made up of thin tubes located just below the surface of the plant’s stems. The molecules in this tissue attract water molecules from the soil, so that the water is pulled upwards. This process is called capillary action.

Detailed explanation-3: -Plants absorb water from the soil by a process called osmosis – the natural movement of water molecules from an area of high concentration, across a semi-permeable, sieve-like membrane, to an area of low concentration.

Detailed explanation-4: -Micronutrients, including iron, zinc, manganese, and copper, are required in very small amounts. Micronutrients are often required as cofactors for enzyme activity. Mineral nutrients are usually obtained from the soil through plant roots, but many factors can affect the efficiency of nutrient acquisition.