Chapter Exam

Chapter 5 BIOLOGY : The Fundamental Unit of Life — Online MCQ Test

Q: Who discovered the cell by observing a thin slice of cork under a self-designed microscope?

Answer: B. Robert Hooke — Robert Hooke discovered cells in 1665 when he observed cork slices under a primitive microscope.

Q: Which cell organelle is famously known as the 'powerhouse of the cell'?

Answer: C. Mitochondria — Mitochondria produce energy in the form of ATP, hence they are called the powerhouses.

Q: What is the main difference between smooth endoplasmic reticulum (SER) and rough endoplasmic reticulum (RER)?

Answer: A. RER has ribosomes, SER does not — RER appears rough under the microscope due to the presence of ribosomes on its surface, while SER is smooth.

Q: Which of the following is NOT a feature of plant cells?

Answer: C. Centrioles — Centrioles are typically found in animal cells and help in cell division, but are absent in most plant cells.

Q: If a scientist observes a cell without a distinct nucleus and membrane-bound organelles, it must be a:

Answer: C. Prokaryotic cell — Prokaryotic cells lack a defined nuclear membrane and membrane-bound organelles.

SCIENCE · CLASS 9th · Andhra State Board

Practice Chapter 5 BIOLOGY : The Fundamental Unit of Life with a free chapter-wise online MCQ test for Andhra State Board CLASS 9th SCIENCE. This chapter covers: This chapter covers discovery of cell plasma membrane cell wall cytoplasm cell organelles like nucleus mitochondria endoplasmic reticulum and cell division mechanisms.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 5 BIOLOGY : The Fundamental Unit of Life — Important Questions & Answers (FAQ)

Frequently asked questions from Andhra State Board CLASS 9th SCIENCE — Chapter 5 BIOLOGY : The Fundamental Unit of Life, with answers and explanations. These are sample questions; the exam has its own separate question set.

Who discovered the cell by observing a thin slice of cork under a self-designed microscope?

A. Robert Brown
B. Robert Hooke ✓
C. Purkinje
D. Virchow

Answer: B. Robert Hooke
Robert Hooke discovered cells in 1665 when he observed cork slices under a primitive microscope.

Which cell organelle is famously known as the 'powerhouse of the cell'?

A. Ribosome
B. Lysosome
C. Mitochondria ✓
D. Golgi apparatus

Answer: C. Mitochondria
Mitochondria produce energy in the form of ATP, hence they are called the powerhouses.

What is the main difference between smooth endoplasmic reticulum (SER) and rough endoplasmic reticulum (RER)?

A. RER has ribosomes, SER does not ✓
B. SER has ribosomes, RER does not
C. RER produces lipids, SER produces proteins
D. Only SER is involved in protein transport

Answer: A. RER has ribosomes, SER does not
RER appears rough under the microscope due to the presence of ribosomes on its surface, while SER is smooth.

Which of the following is NOT a feature of plant cells?