Tag: cell structure and organization

Questions Related to cell structure and organization

The various functions of vacuole are

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. Maintaining acidic pH

  2. Containing waste product

  3. Exporting waste

  4. All of the above

Show answer
Correct Option: D
Explanation:
Vacuoles are the membrane-bound organelle and perform various functions according to the type of cell in which they are present. In general, the functions of the vacuole include isolating materials that might be harmful or a threat to the cell, containing waste products, containing water in plant cells, maintaining an acidic internal pH, exporting unwanted substances from the cell, allows plants to support structures such as leaves and flowers due to the pressure of the central vacuole etc. 

What is the function of the contractile vacuole?

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. Excretion

  2. Respiration

  3. Digestion

  4. Nutrition

Show answer
Correct Option: A
Explanation:

The contractile vacuoles are the structures which are present in the cells of the lower organisms. The vacuole plays an important role in excretion and osmoregulation. The wastes like the ammonia can be excreted through the vacuoles. The water and the other salts are also removed through this vacuoles in order to maintain the osmotic balance. 

Thus, the correct answer is option A. 

Colour of rose petals is due to water soluble pigment present in

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. Cytoplasm

  2. Intercellular spaces

  3. Nucleus

  4. Vacuoles

Show answer
Correct Option: D
Explanation:
  • Colour of rose petals is due to water-soluble pigment present in the vacuoles.
  • The plant vacuoles consist of various water-soluble pigments such as carotenoids, anthocyanins and xanthophylls etc.
  • Anthocyanins are also water-soluble pigments which are red, purple, or blue in colour depending on the pH (blueberry, raspberry etc).
  • The colour of flower petals (red, pink, blue and purple) is mainly from the pigments called anthocyanins.
  • So, the correct answer is 'Vacuoles'.

Cell sap occurs in organelle

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. Nucleolus

  2. Vacuole

  3. Endoplasmic reticulum

  4. Golgi bodies

Show answer
Correct Option: B
Explanation:
  • Cell sap (fluid inside the vacuole of a plant cell which serves as storage of materials) occurs in the vacuole.
  • A vacuole is a membrane-bound (tonoplast) organelle present in cells.
  • It forms an enclosed compartment within the cell which are filled with water, dissolved inorganic and organic molecules (enzymes)
  • It stores food and variety of nutrients required by the cell to survive and also store waste products which protect the cell from getting contaminated.
  • So, the correct answer is 'Vacuole'.

Anthocyanin occurs in

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. Chloroplasts

  2. Vacuole

  3. Leucoplasts

  4. Chromoplasts

Show answer
Correct Option: B
Explanation:
  • The plant vacuoles consist of various water-soluble pigments such as carotenoids, anthocyanins and xanthophylls etc.
  • Anthocyanins are also water-soluble pigments which are red, purple, or blue in colour depending on the pH which gives colour to the flower and fruits (blueberry, raspberry etc).
  • So, the correct answer is 'Vacuoles'.

Contractile vacuoles take part in

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. Storage of wastes

  2. Osmoregulation

  3. Excretion

  4. Both B and C

Show answer
Correct Option: D
Explanation:
  • A contractile vacuole is a sub-cellular organelle found in few protozoans.
  • It is a specialized vacuole which helps in regulating the quantity of water inside cell (osmoregulation- maintaining constant osmotic pressure of the fluids of an organism).
  • It is a part of the protective mechanism which prevents the cell from absorbing too much water and also prevents the rupturing of the cell created due to excessive internal pressure.
  • It also expels out the waste material (ammonia collected from the intercellular fluid) to the cell exterior.
  • So, the correct answer is 'Both B and C'.

Vacuoles are

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. Cytoplasmic organelles

  2. Non-cytoplasmic organelles

  3. Non-cytoplasmic sacs

  4. Cytoplasmic sacs

Show answer
Correct Option: C
Explanation:
  • Vacuoles are non-living and non-cytoplasmic cell inclusions present in the cytoplasm which contain inorganic and organic molecules.
  • They are present in the form of minute droplets in the cytoplasm of the cells (small vacuole filled with cell sap).
  • So, the correct answer is 'Non-cytoplasmic sacs'.

Which one does not occur in cell vacuoles?

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. Hydrolytic enzymes

  2. Latex

  3. Anthocyanins

  4. DNA

Show answer
Correct Option: D
Explanation:
  • A cell vacuole is a membrane-bound (tonoplast) organelle present in cells.
  • It forms an enclosed compartment within the cell which are filled with water, dissolved inorganic and organic molecules (enzymes)
  • They contain hydrolytic enzymes for breaking down the macromolecules (proteins, nucleic acids etc.).
  • Anthocyanin is stored in the vacuoles (flowers and fruits).
  • It does not possess its own DNA as the mitochondria and chloroplasts.
  • So, the correct answer is 'DNA'.

Number of sap vacuoles present in an animal cell is

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. One and large

  2. Many and large

  3. Many and small

  4. None of the above

Show answer
Correct Option: C
Explanation:
  • Sap vacuoles are small sac-like structures present in the cell which is filled with fluid and serves as storage of materials (cell sap).
  • It forms an enclosed compartment within the cell which are filled with water, dissolved inorganic and organic molecules (enzymes)
  • It stores food and variety of nutrients required by the cell to survive and also store waste products which protect the cell from getting contaminated.
So, the correct answer is 'Many and small'.

These vacuoles store nutrients

botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

  1. Sap

  2. Contractile

  3. Food

  4. Air

Show answer
Correct Option: A
Explanation:
  • A vacuole is a membrane-bound (tonoplast) organelle present in cells.
  • It forms an enclosed compartment within the cell which are filled with water, dissolved inorganic and organic molecules (enzymes)
  • Sap vacuoles store food and variety of nutrients required by the cell to survive.
  • So, the correct answer is 'Sap'.