Biology MCQ

Due to exosmosis of water

For which of the following, energy is required?

Which of the following is false for active transport?

Ravi noticed that his potted plant was wilting despite being watered regularly. He suspected that the plant was not absorbing water properly. He added a balanced fertiliser and observed that the plan's condition improved. What was likely the reason for Ravi's plant wilting initially?

Tonocity is the

The ourward movement of water molecules from the cell to outside though a semiperneable membrane is called

Assertion (A): Active transport does not require energy for the absorption of minerals by roots.
Reason (R): Active transport involves the movement of minerals against their concentration gradient.

In the soil, mostly the soil has

Vacuoles in plant cells are filled with

The different processes and functions of the plants are studied under

When the cells of the plants are fully stretched, the condition is called

Active transport is the opposite of

The cell wall of root hair is made up of

Assertion (A): Transpiration helps in the upward movement of water in plants.
Reason (R): Transpiration creates a suction force which pulls water up through the xylem vessels.

In osmosis there is

Cell membrane of a cell is

Diffusion of molecules are applicable to

The highest water potential (capacity to move out to high concentrated solution) is that of

Assertion (A): Root hairs increase the surface area for absorption of water only and not for the minerals.
Reason (R): Root hairs are extensions of the root epidermal cells.

'Xylem conducts water from roots' can be proved by