9th Class Science The Fundamental Unit of Life Question Bank

done Assertion and Reason MCQs - The Fundamental Unit of Life Total Questions - 15

• question_answer1)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion Robert Brown discovered nucleus.

  Reason Nucleoplasm and cytoplasm of a living cell together form the protoplasm.

   
  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer2)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion Schleiden and Schwann proposed the cell theory.

  Reason His cell theory states that all plants and animals are composed of cells.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer3)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion Prokaryotic cells are primitive and larger than eukaryotic cells.

  Reason Prokaryotic cells lack cytoplasmic organelles.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer4)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion Cells having cell wall withstand very dilute (hypotonic) external media without bursting.

  Reason The cell wall exerts an equal pressure against the swollen cell.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer5)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion Chromosomes are constituted by DNA and protein.

  Reason These are thread-like structures present in nucleus.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer6)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion The presence of genetic material as nucleoid is the characteristic of a prokaryotic cell.

  Reason The genetic material in these cells is not present in nucleus.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer7)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion Smooth endoplasmic reticulum is associated with synthesis of proteins.

  Reason Smooth endoplasmic reticulum do not possess ribosomes.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer8)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion Golgi bodies store, modify and pack products in vesicles.

  Reason They are involved in the formation of lysosomes.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer9)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion Lysosomes are also called suicidal bags of a cell.

  Reason When the cell gets damaged, lysosomes may burst and the enzymes digest their own cell.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer10)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion Lysosomes are also known as 'suicidal bags 5 of a cell.

  Reason Lysosomes provide turgidity and rigidity to the cell.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer11)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion Mitochondria are known as the powerhouse of a cell.

  Reason These generate energy (as ATP) for various cellular activities.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer12)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion Chloroplast is called the 'kitchen of the cell'.

  Reason Chlorophyll pigment is present in chloroplast which helps in photosynthesis.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer13)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion Leucoplast are the colourless plastids.

  Reason They play a role in photosynthesis.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer14)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion Vacuoles are known as storage sacs.

  Reason A vacuole stores salts, minerals, amino acids within the cell.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
   Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false done clear
  D)
  A is false, but R is true done clear
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• question_answer15)

  Direction: For question numbers two statements are given-one labeled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes [a], [b], [c] and [d] as given below.

  Assertion The central vacuole of some plants cells may occupy 50-90% of the cell volume.

  Reason They provide energy to the plant cell.

  A)
  Both A and R are true and R is correct explanation of the A done clear
  B)
  Both A and R are true, but R is not the correct explanation of the A done clear
  C)
  A is true, but R is false                           done clear
  D)
  A is false, but R is true done clear
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