SSC MTS EXAM

SSC

BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How do minerals enter into plant cells?I. Active transportII. Bulk flow (with water)III. Transport by Phloem
A
I only
B
I and II only
C
I, II and III
D
II and III only
Explanation: 

Detailed explanation-1: -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.

Detailed explanation-2: -Minerals are usually present as charged ions and the concentration of minerals is more in the root than in soil. Hence they require energy in the form of ATP to move against the concentration gradient. Also, the plasma membrane does not allow the movement of charged ions passively.

Detailed explanation-3: -Water Transport from Roots to Shoots The structure of plant roots, stems, and leaves facilitates the transport of water, nutrients, and photosynthates throughout the plant. The phloem and xylem are the main tissues responsible for this movement.

There is 1 question to complete.