How are roots adjusted for absorption of water ? Give three ways .
Answers
The absorption of water in plants takes place through roots. Water is drawn up by the root hair cells through the process of osmosis. ... Thus, photosynthesis is carried out only in the presence of water, which is absorbed by the roots in plants.
Answer:
Root hair cells
Cross-section of root hair cell: a roughly rectangular shape with a long, thin tail extending to the right and a nucleus at the top left.
Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption. They also contain lots of mitochondria, which release energy from glucose during respiration in order to provide the energy needed for active transport.
The absorbed water is transported through the roots to the rest of the plant where it is used for different purposes:
it is a reactant used in photosynthesis
it supports leaves and shoots by keeping the cells rigid
it cools the leaves by evaporation
it transports dissolved minerals around the plant