The Fundamental Unit of Life
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Cell Theory
SubtopicCell Theory under The Fundamental Unit of Life for Grade 9 CBSE.
Preview questions (no answers)
- 1.
Cells which can change their shape like Amoeba are also found in the human body. Name them.
A.Nerve cells
B.Red blood cells
C.White blood cells
D.Muscle cells
- 2.
Which part of the microscope is used to get a sharp focus of the image?
A.Fine adjustment knob
B.Coarse adjustment knob
C.Stage clips
D.Mirror
- 3.
The size of a cell is mostly limited by:
A.The size of the organism
B.The amount of food available
C.Surface area to volume ratio
D.The number of nuclei
Download the worksheet for The Fundamental Unit of Life - Cell Theory to practice offline. It includes additional chapter-level practice questions.
Plasma Membrane and Cell Wall
SubtopicPlasma Membrane and Cell Wall under The Fundamental Unit of Life for Grade 9 CBSE.
Preview questions (no answers)
- 1.
In plants, the cell wall is primarily made of:
A.Proteins
B.Lipids
C.Cellulose
D.Chitin
- 2.
Which of these would happen if a cell's plasma membrane ruptures?
A.The cell will grow faster
B.The cell will be able to transport more food
C.The cell will die as it cannot maintain its internal environment
D.The cell wall will take over its function
- 3.
The cell wall is ______ to most substances.
A.Selectively permeable
B.Semi-permeable
C.Freely permeable
D.Impermeable
Download the worksheet for The Fundamental Unit of Life - Plasma Membrane and Cell Wall to practice offline. It includes additional chapter-level practice questions.
Nucleus and Cytoplasm
SubtopicNucleus and Cytoplasm under The Fundamental Unit of Life for Grade 9 CBSE.
Preview questions (no answers)
- 1.
Which of the following consists of both a fluid part and membrane-bound organelles?
A.Nucleolus
B.Cytoplasm
C.Gene
D.DNA
- 2.
If the nucleus is removed from a living cell, what will likely happen?
A.The cell will grow faster
B.The cell will eventually die
C.The cell will become a prokaryote
D.The cell will produce more energy
- 3.
What is the nature of the boundary of the cytoplasm in an animal cell?
A.Nuclear membrane
B.Cell wall
C.Plasma membrane
D.Nucleoplasm
Download the worksheet for The Fundamental Unit of Life - Nucleus and Cytoplasm to practice offline. It includes additional chapter-level practice questions.
Cell Organelles (ER, Golgi, Mitochondria, Plastids, Vacuoles)
SubtopicCell Organelles (ER, Golgi, Mitochondria, Plastids, Vacuoles) under The Fundamental Unit of Life for Grade 9 CBSE.
Preview questions (no answers)
- 1.
The organelle that provides the cell with its structural strength and prevents it from collapsing by maintaining internal pressure is the:
A.Mitochondrion
B.Golgi body
C.Vacuole
D.Leucoplast
- 2.
Which of the following is a function of the Smooth Endoplasmic Reticulum?
A.Synthesizing proteins
B.Synthesizing lipids
C.Synthesizing starch
D.Generating ATP
- 3.
Which organelle can be seen as a set of flattened sacs associated with the ER?
A.Mitochondria
B.Golgi Apparatus
C.Chloroplasts
D.Centrioles
Download the worksheet for The Fundamental Unit of Life - Cell Organelles (ER, Golgi, Mitochondria, Plastids, Vacuoles) to practice offline. It includes additional chapter-level practice questions.