Question

The figure given below is a diagrammatic representation of a part of the cross-section of the root in the root hair zone. Study the same and then answer the questions that follow:

1. The parts labelled as 1, 2, 3 and 4 are:
   1. Root hair, Xylem vessel, Soil particles, Cortex respectively.
   2. Xylem vessel, Soil particles, Root hair, Cortex respectively.
   3. Root hair, Xylem vessel, Cortex, Soil particles respectively.
   4. Cortex, Soil particles, Xylem vessel, Root hair respectively.
2. The process that enables the passage of water from soil into the root hair is:
   1. Diffusion
   2. Active transport
   3. Osmosis
   4. Passive absorption
3. The kind of force which exists between a liquid and any surface is called as:
   1. Cohesive force
   2. Adhesive force
   3. Capillarity
   4. Suction force
4. The kind of force between the same kind of liquid molecules is:
   1. Capillary force
   2. Transpirational pull
   3. Adhesive force
   4. Cohesive force
5. Sometimes exudation of water occurs from the margin of the leaves in the early morning or night. It is termed as:
   1. Transpiration
   2. Guttation
   3. Bleeding
   4. Osmosis

Answer 1

1. i. Root hair, Xylem vessel, Soil particles, Cortex respectively.
2. iii. Osmosis
3. ii. Adhesive force
4. iv. Cohesive force
5. iii. Guttation