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Cells and tissues
6 Class 9 Biology questions with answers and explanations.
Printable worksheet with answer key
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Who first observed cells in a thin slice of cork?
- 1 Schwann
- 2 Leeuwenhoek
- 3 Schleiden
- 4 Robert Hooke
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Correct answer: Robert Hooke
Robert Hooke saw the cell walls of cork in 1665 and named them cells.
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The powerhouse of the cell is the:
- 1 Mitochondrion
- 2 Golgi body
- 3 Ribosome
- 4 Nucleus
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Correct answer: Mitochondrion
Mitochondria release energy from food in the form of ATP.
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Which organelle is found in plant cells but not in animal cells?
- 1 Mitochondria
- 2 Ribosome
- 3 Nucleus
- 4 Chloroplast
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Correct answer: Chloroplast
Chloroplasts carry out photosynthesis and are found in plant cells.
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Protein synthesis takes place on the:
- 1 Lysosomes
- 2 Centrioles
- 3 Vacuoles
- 4 Ribosomes
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The cell wall of plants is mainly made of:
- 1 Protein
- 2 Cellulose
- 3 Chitin
- 4 Starch
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A group of similar cells that perform the same function is a:
- 1 System
- 2 Tissue
- 3 Organ
- 4 Organelle