Quiz-Lecture 1

Which of the following organisms can utilize low energy inorganic materials to synthesize carbohydrates?

All living organisms get their nutrition from the sun either directly or indirectly

All the following statements are correct regarding the structure of root hair, except that…..

Which of the following is not from the adaptation of the root hairs?

They have thin walls
Being large in number and protruding to outside
The concentration of the solution inside the vacuoles of the root hair is less than that of the soil
A viscous substance is produced by the root hair

The presence of lignin, suberin or cutin on the cell walls renders them…..

Osmotic pressure causes……

Passage of salts from high concentration medium to low concentration medium through a semi-permeable membrane
Passage of water from low concentration medium to high concentration medium through a semi-permeable membrane
Passage of water from the medium of high solute concentration to another medium of low solute concentration through a semi-permeable membrane
Passage of water from the medium of low solute concentration to another medium of high solute concentration through a semi-permeable membrane

The ability of colloids to absorb liquids is known as

Which of the following elements is needed by the plant in very small quantities and help to activate enzymes?

Sodium ions are considered as……

Which of the following mechanisms requires ATP to proceed?

Diffusion of ions from high-concentration medium to low-concentration medium
passage of water from a medium of low concentration of solute to a medium of high concentration of solute
movement of ions from low-concentration medium to high-concentration medium
imbibition of water by colloids

Some ions when reach a semi-permeable plasma membrane are selected and allowed to pass through according to their…..

On examining Nitella alga we can observe that…..

The concentration of various ions inside the cell sap is higher than that in the water
The concentration of various ions is not the same
All of the above
None of the above

Sec 2 – ch 1: Nutrition and digestion in living organisms