Question

Select from the following which one is moved by active transport
(1) $Na^{+}$ amino acid, in proximal convoluted tubules.
(2) Absorption of most minerals by epidermal cells of root.
(3) $Na^{+} K^{+}$ pump.
(4) Loading of sucrose from companion cell to sieve tube cells.

• A. All except 4
• B. All except 3
• C. All except 1
• D. All of these

Answer 1

Answer: (D)

Correct answer is (d) All of these