Plant Water Transport

Questions about osmosis, water potential, turgidity, xylem transport, and water absorption mechanisms in plants

20 Questions Published

Questions

Question 1 Multiple Choice (Single Answer)

The form and structure of a growing cell is maintained because of

  1. osmosis
  2. plasmolysis
  3. turgidity
  4. wall pressure
Question 2 Multiple Choice (Single Answer)

In a hypertonic solution, a cell's water pressure

  1. increases
  2. first increases and then decreases
  3. decreases
  4. does not change
Question 3 Multiple Choice (Single Answer)

In a plant cell, OP is equal to

  1. Diffusion Pressure Deficit + Turgor Pressure
  2. Diffusion Pressure Deficit - Turgor Pressure
  3. Turgor Pressure - Diffusion Pressure Deficit
  4. Turgor Pressure - Diffusion Pressure
Question 4 Multiple Choice (Single Answer)

During rainy season, doors made of wood generally swell up due to

  1. osmosis
  2. imbibition
  3. bad quality of wood
  4. poor workmanship
Question 5 Multiple Choice (Single Answer)

A cell undergoes plasmolysis after being kept in a hypertonic solution. What will be present between cell wall and plasma lemma?

  1. Hypertonic solution
  2. Air
  3. Hypotonic solution
  4. Isotonic solution
Question 6 Multiple Choice (Single Answer)

Which of the following is true concerning the water potential of a plant cell?

  1. It is higher than air
  2. It becomes higher when K+ ions are actively moved into the cell
  3. It is equal to zero when the cell is in pure water and turgid
  4. It becomes lower after the uptake of water by osmosis
Question 7 Multiple Choice (Single Answer)

When a cell is fully turgid, which of the following will be zero?

  1. Wall Pressure
  2. Suction Pressure
  3. Osmotic Pressure
  4. Turgor Pressure
Question 8 Multiple Choice (Single Answer)

Cell A with OP = 6 and TP = 5 is surrounded by the cells with OP = 3 and TP = 1. What will be the direction of water movement?

  1. From other cells to cell A
  2. Water will not move
  3. Water will move up
  4. From cell A to other cells
Question 9 Multiple Choice (Single Answer)

Which of the following statements is incorrect?

  1. Water and inorganic salts are taken simultaneously by root hairs
  2. Plants take in small quantity of mineral salts through soil water
  3. Roots are the main absorbing organs of plants
  4. Plants absorb only one thing at a time, water or inorganic salts
Question 10 Multiple Choice (Single Answer)

A freshly cut potato chip is put into a strong solution of sugar. Later, it will be found

  1. flaccid
  2. turgid
  3. more full of starch
  4. more full of sugar
Question 11 Multiple Choice (Single Answer)

A cell placed in a strong salt solution will shrink because

  1. mineral salts will break the cell wall
  2. salt water will enter the cell
  3. water comes out by exosmosis
  4. cytoplasm will decompose
Question 12 Multiple Choice (Single Answer)

The movement of water from one cell of the cortex to adjacent one, in the roots, is due to

  1. accumulation of inorganic salts in the cells
  2. accumulation of organic compounds in the cells
  3. chemical potential gradient
  4. water potential gradient
Question 13 Multiple Choice (Single Answer)

The principal pathway by which water is translocated in angiosperms is

  1. xylem vessel system
  2. sieve tubes members of phloem
  3. xylems and phloem
  4. sieve cells of phloem
Question 14 Multiple Choice (Single Answer)

In soil, water available to the plants' root is

  1. hygroscopic water
  2. capillary water
  3. gravitation water
  4. colloid water
Question 15 Multiple Choice (Single Answer)

If the cut end of a tree is put in eosin solution, then the

  1. leaves remain fresh, but ascent of sap stops
  2. phloem gets colored because of ascent of sap
  3. xylem elements get stained showing ascent of sap
  4. ascent of sap stops
Question 16 Multiple Choice (Single Answer)

The initial stage of water absorption by root cells is by

  1. absorption
  2. imbibition
  3. osmosis
  4. respiration
Question 17 Multiple Choice (Single Answer)

Which of the following is connected with transport of water in plants?

  1. Phloem
  2. Xylem
  3. Epidermis
  4. Cambium
Question 18 Multiple Choice (Single Answer)

The stomata in angiosperms open and close due to

  1. the presence of gases inside the leaves
  2. their genetic constitution
  3. turgor pressure of guard cells
  4. turgor pressure of subsidiary cells
Question 19 Multiple Choice (Single Answer)

That the cell wall is permeable can be best deduced from the passage of water and mineral salts from

  1. root hairs into cortical cells
  2. pericyle cells into tracheal elements
  3. cortical cells into the pericycle
  4. soil into root hairs
Question 20 Multiple Choice (Single Answer)

Turgidity of the cells is maintained by

  1. wall pressure
  2. turgor pressure
  3. diffusion pressure
  4. osmotic pressure