Nat Quiz - 23 May | Take the Quiz

Which of the following are partially permeable? Choose 1 or more answer.

What is differentiation?

Process by which cell becomes specialized for specific function

Process by which cell changes shape

Process by which cell becomes generalized to perform all functions

Process by which cells turns into tissues, organs or organ s ystems

Which of the following is/are adaptation(s) of red blood cells?

Contain haemoglobin to bind with carbon dioxide

Circular biconcave shape to decrease surface area to volume ratio so oxygen can diffuse faster

No nucleus to contain more haemoglobin

Small and flexible enough to squeeze through blood capillaries

Which of the following is/are adaptation(s) of root hair cells?

Long protrusion of cell to increase surface area to volume ratio for efficient absorption of water and mineral salts

Large sap vacuole to absorb maximum amount of water and mineral salts

Thin cellulose cell wall to reduce distance travelled by water and mineral salts into cell

Reduced number of mitochondria to increase space for absorption of water and mineral salts

Which of the following is/are true of xylem vessels?

Do not possess cross walls and protoplasm to reduce resistance to water flow

Lignin is deposited on cell walls to provide mechanical support

Cells are dead

Cary out active transport of water for faster transport of water

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