Tag: cell structure and organization

Quizzes (10) Questions (43)

Questions Related to cell structure and organization

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

The various functions of vacuole are

  1. Maintaining acidic pH

  2. Containing waste product

  3. Exporting waste

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
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. 
Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

What is the function of the contractile vacuole?

  1. Excretion

  2. Respiration

  3. Digestion

  4. Nutrition
Reveal answer Fill a bubble to check yourself
A Correct answer
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. 

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

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

  1. Cytoplasm

  2. Intercellular spaces

  3. Nucleus

  4. Vacuoles
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.
Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

Cell sap occurs in organelle

  1. Nucleolus

  2. Vacuole

  3. Endoplasmic reticulum

  4. Golgi bodies
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.
Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

Anthocyanin occurs in

  1. Chloroplasts

  2. Vacuole

  3. Leucoplasts

  4. Chromoplasts
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.
Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

Contractile vacuoles take part in

  1. Storage of wastes

  2. Osmoregulation

  3. Excretion

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.
Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

Vacuoles are

  1. Cytoplasmic organelles

  2. Non-cytoplasmic organelles

  3. Non-cytoplasmic sacs

  4. Cytoplasmic sacs
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.
Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

Which one does not occur in cell vacuoles?

  1. Hydrolytic enzymes

  2. Latex

  3. Anthocyanins

  4. DNA
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.
Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

Number of sap vacuoles present in an animal cell is

  1. One and large

  2. Many and large

  3. Many and small

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.
Multiple choice botany cell structure and organization membrane bound organelles cell: size and differentiation microscopy

These vacuoles store nutrients

  1. Sap

  2. Contractile

  3. Food

  4. Air
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.