Absorption using
a small herbaceons plane experiment
Answers
Answer:
ABSORPTION OF WATER BY ROOTS - DEFINITION
Aim: To show that roots absorb water.
Procedure:
Test tube A: Water + young leaf with intact root. Immerse the root in water. Cover the water with oil. Mark the water level.
Test tube B: Water covered with a layer of oil.
Observation:
Test tube A: Level of water is decreased.
Test tube B: No change in the water level.
Inference: Water is absorbed by roots.
UPWARD CONDUCTION OF WATER THROUGH ROOTS - DEFINITION
A medium sized young balsam plant is placed in a beaker containing eosin solution.
After a period of time, transverse section of its roots, stem and leaves were observed under microscope.
It was found that, the xylem vessels appear distinct (red) from the rest, as they are stained by the dye.
Answer:
As atmospheric evaporative demand increases during the morning, transpiration increases, which lowers the water potential of cells from which water is evaporating. ... This gradient is transmitted throughout the plant–soil system, enabling continuous water movement.
Explanation: