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Absorption by Roots - 1

Absorption by Roots - I

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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following plant structures are responsible for absorption of minerals?

  1. Stomata
  2. Stem
  3. Roots
  4. Leaves
Question 2 Multiple Choice (Single Answer)

Which of the following functions is NOT carried out by roots?

  1. Fixation of plant in soil
  2. Producing a suction force through transpiration
  3. Absorption of nitrates
  4. Conduction of absorbed water to the upper parts of the plant
Question 3 Multiple Choice (Single Answer)

Which of the following is NOT absorbed by the roots?

  1. Nitrate
  2. Sulphate
  3. Phosphate
  4. Carbon dioxide
Question 4 Multiple Choice (Single Answer)

Which of the following is NOT a characteristic of roots for absorbing water?

  1. Huge surface area
  2. Presence of solution at higher concentration than soil water
  3. Presence of pores for inflow of water
  4. Thin wall of root hair
Question 5 Multiple Choice (Single Answer)

Which of the following form root hair?

  1. Epidermal cells
  2. Guard cells
  3. Mesophyll cells
  4. Xylem vessels
Question 6 Multiple Choice (Single Answer)

Which of the following is TRUE for the concentration of vacuoles present in epidermal cells?

  1. It is hypertonic to soil water.
  2. It is hypotonic to soil water.
  3. It is isotonic to soil water.
  4. It is an empty vacuole.
Question 7 Multiple Choice (Single Answer)

Which of the following phenomena is responsible for rupturing coats of germinating seeds?

  1. Osmosis
  2. Diffusion
  3. Assimilation
  4. Imbibition
Question 8 Multiple Choice (Single Answer)

What is the process of absorption of water by surface attraction called?

  1. Osmosis
  2. Imbibition
  3. Diffusion
  4. Active transport
Question 9 Multiple Choice (Single Answer)

What is the process of movement of molecules of a gas from higher concentration to the region of lower concentration called?

  1. Imbibition
  2. Diffusion
  3. Absorption
  4. Osmosis
Question 10 Multiple Choice (Single Answer)

Which of the following processes involves a semi-permeable membrane?

  1. Imbibition
  2. Active transport
  3. Osmosis
  4. Sedimentation
Question 11 Multiple Choice (Single Answer)

Which of the following phenomena leads to swelling of cell?

  1. Phagocytosis
  2. Endomosis
  3. Exosmosis
  4. Plasmolysis
Question 12 Multiple Choice (Single Answer)

When a sugar cube is kept in a beaker containing water, it slowly dissolves and spreads in the liquid. Which of the following processes is taking place?

  1. Melting
  2. Absorption
  3. Diffusion
  4. Imbibition
Question 13 Multiple Choice (Single Answer)

Which of the following is NOT a semi-permeable membrane?

  1. Cell membrane
  2. Cellophane paper
  3. Muslin cloth
  4. Visking bag
Question 14 Multiple Choice (Single Answer)

If a cell is placed in pure water, which of the following will occur?

  1. Movement of water outside the cell
  2. Movement of water into the cell
  3. No movement
  4. Movement of solutes only
Question 15 Multiple Choice (Single Answer)

Which of the following processes allows absorption of nutrients like nitrates, potassium, zinc, etc.?

  1. Endosmosis
  2. Diffusion
  3. Active transport
  4. Imbibition
Question 16 Multiple Choice (Single Answer)

Which of the following processes requires energy to take place?

  1. Imbitition
  2. Osmosis
  3. Diffusion
  4. Active transport
Question 17 Multiple Choice (Single Answer)

Which of the following takes place in active transport?

  1. Movement of a substance from its lower to higher concentration
  2. Movement of a substance form its higher to lower concentration
  3. Movement of water from its lower to higher concentration
  4. Movement of water from its higher to lower concentration
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