Root hairs are the epidermal outgrowths of the outermost layer of roots. They are well-suited for absorption of water from soil due to which of the following features ?

P. Large surface area.
Q. Lower concentration of cell sap.
R. Semi permeable nature of the cell membrane.

1. Only P
2. Only Q
3. Only P and Q
4. Only P and R

Xylem tissue forms a tubular passage to transport water and mineral salts from the roots to the aerial parts of a plant. It consists of different types of cells.

P. Sieve tubes and companion cells
Q. Wood parenchyma and wood fibres
R. Tracheids and vessels

Which of the following are xylem components?

1. Only P
2. Only P and R
3. Only Q and R
4. All P, Q and R

Assertion (A): In plants, transportation of water from roots to leaves is carried out by the conducting tissue called phloem.

Reason (R): Roots absorb water and minerals from the soil which are transported to leaves for various metabolic activities like photosynthesis, transpiration, respiration, etc.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Assertion (A): The movement of molecules from their lower concentration to a higher concentration requires energy in the form of ATP.

Reason (R): Active transport is the process during which root hairs of a plant absorb minerals from the soil.

1. Both A and R are true.
2. Both A and R are false.
3. A is true and R is false.
4. A is false and R is true.