Chapter 2: Cell: The Building Block of Life — Online MCQ Test
SCIENCE · Grade 9 · CBSE(NCERT)
Practice Chapter 2: Cell: The Building Block of Life with a free chapter-wise online MCQ test.
This chapter covers: Cell Cell Membrane Nucleus Cytoplasm Organelles Mitochondria Chloroplast Endoplasmic Reticulum Golgi Apparatus Ribosome Life Processes Understanding cell structure organelles their....
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Chapter 2: Cell: The Building Block of Life — Important Questions & Answers
Who discovered the cell in 1665 while observing cork slices under a microscope?
- A. Anton van Leeuwenhoek
- B. Robert Hooke
- C. Robert Brown
- D. Schleiden
Answer: B. Robert Hooke
Robert Hooke observed cork and coined the term "cell". Anton van Leeuwenhoek later observed living cells.
Robert Hooke observed cork and coined the term "cell". Anton van Leeuwenhoek later observed living cells.
The jelly-like substance present inside the cell membrane and surrounding the organelles is called:
- A. Nucleus
- B. Cytoplasm
- C. Cell wall
- D. Vacuole
Answer: B. Cytoplasm
Cytoplasm is the fluid material inside the cell membrane in which organelles are suspended.
Cytoplasm is the fluid material inside the cell membrane in which organelles are suspended.
A cell placed in a hypotonic solution swells up because:
- A. Water moves out of the cell
- B. Water moves into the cell
- C. Salt moves into the cell
- D. The cell wall dissolves
Answer: B. Water moves into the cell
In a hypotonic solution, water enters the cell by osmosis, causing it to swell.
In a hypotonic solution, water enters the cell by osmosis, causing it to swell.
Which of the following is NOT a cell organelle?
- A. Mitochondrion
- B. Golgi apparatus
- C. Plasma membrane
- D. Ribosome
Answer: C. Plasma membrane
The plasma membrane is a cell boundary, not a cell organelle.
The plasma membrane is a cell boundary, not a cell organelle.
Which statement is correct about mitochondria and chloroplasts?
- A. Both are present in all plant and animal cells
- B. Mitochondria release energy, while chloroplasts trap solar energy
- C. Chloroplasts are the site of respiration, while mitochondria are the site of photosynthesis
- D. Both are only present in animal cells
Answer: B. Mitochondria release energy, while chloroplasts trap solar energy
Mitochondria are the sites of cellular respiration and release energy, whereas chloroplasts capture light energy for photosynthesis.
Mitochondria are the sites of cellular respiration and release energy, whereas chloroplasts capture light energy for photosynthesis.