Question

Choose the correct answer:
1. transport of food material in higher plants takes place through
a. companion cell
b. transfusion tissue
c. tracheids
d. sieve elements

2.the relative rate of diffusion of substances are
a. inversely proportional to the square root of the density.
b. directly proportional to the square root of their densities.
c. there is no no relation between diffusion and density.
d. independent of density of medium.

3. lipids cannot pass through the cell membrane because they are too large to fit through

a.true
b.false

4.the membrane which allows only water molecules to pass through it and the no solute molecule is called
a. selectively permeable
b. impermeable membrane
c. semipermeable membrane
d. permeable membrane

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Answer 1

Answer:

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Answer 2

hii mate

1. transport of food materials in higher plants takes place through

ans: (D) sieve elements

2. the relative rate of diffusion of substances are

ans: (a) inversely proportional to the square root of their density.

3. leopardlipids cannot pass through the cell membrane because they are too large to fit through

ans: (b) false

4.the membrane which allows only water molecules to pass through it and no solute molecules is called

ans: (c) semipermeable membrane

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