Cell: The Unit of Life Questions and Answers Part-3

1. Identify the given below figure.
q21
a) A tracheid
b) A vessel
c) A parenchyma cell
d) A sieve cell

Answer: a
Explanation: A tracheid

2. What is the main arena of cellular activities in eukaryotic cells?
a) Nucleus
b) Cytoplasm
c) Plasma membrane
d) None of these

Answer: b
Explanation: Cytoplasm is the main arena of cellular activities in eukaryotic cells

3. In an eukaryotic cell, where does the various chemical reactions occur to keep the cell in living state?
a) Nucleus
b) Cytoplasm
c) Mitochondria
d) All of these

Answer: b
Explanation: Cytoplasm

4. How many of the following organelles are found in prokaryotic cells?
ER, Golgi complex, Lysosome, Mitochondria, Microbodies, Vacuoles
a) 1
b) 3
c) 4
d) 0

Answer: d
Explanation: 0

5. Where are the ribosomes found in prokaryotic cells?
a) Cytoplasm
b) Mitochondria
c) Chloroplast
d) All of these

Answer: a
Explanation: Cytoplasm

6.Where are ribosomes found in eukaryotic cells?
a) Cytoplasm
b) Mitochondria
c) Chloroplast
d) All of these

Answer: d
Explanation: All of these

7. How many of the following are membrane bound organelles?
Lysosomes, Ribosomes, Mitochondria, Vacuoles
a) 2
b) 3
c) 4
d) 0

Answer: b
Explanation: 3

8. Which of the following organelle is exclusively found in animal cells?
a) Mitochondria
b) Chloroplast
c) Vacuole
d) Centriole

Answer: d
Explanation: Centriole

9. Which of the following is incorrect?
a) Smallest cell → Mycoplasma
b) Smallest cell → Bacteria
c) Largest single cell → Ostrich’s egg
d) None of these

Answer: b
Explanation: Smallest cell → Bacteria

10. What is the length of mycoplasm cell?
a) 300 mm
b) 0.3 μm
c) 3000 cm
d) All of these

Answer: b
Explanation: 0.3 μm