NCERT (CBSE) Textbook Exercise Questions - Answers
Important Questions Only
Q.1: Indicate True(T) or False(F)
a. Unicellular organisms have one-celled body.
b. Muscle cells are branched structures.
c. The basic living structure of an organism is an organ.
d. Amoeba has irregular shape.
Q.2: Make a sketch of the human nerve dell. What function do nerve cells perform?
Q.3: Write short notes on the following:
(a) Cytoplasm (b) Nucleus of a cell
Q.4: Which part of the cell contains organelles?
Q.5: Make sketches of animal and plant cells. State three differences between them.
Q.6: State a difference between eukaryotes and prokaryotes.
Q.7: Where are the chromosomes found in cell? State their functions.
Q.8: ‘Cells are the basic structural units of living organism’. Explain.
Q.9: Explain why chloroplasts are found only in plant cells.
EXTRASCORE (Additional Important Questions)
Short Questions with their Answers
Q.1: Define Prokaryotes and Eukaryotes.
Q.2: What is Protoplasm?
Q.3: Give three examples of unicellular organisms.
Q.4: Name the cell organelle which is found only in plant cell.
Q.5: What is the smallest cell size?
Q.6: What is the largest cell?
Long Questions with their Answers
Q.1: Why cell is known as structural and functional unit of life?
Q.2: Why are the mitochondria known as the power house of the cell?
Q.3: Why plasma membrane is called a selectively permeable membrane?
Q.4: Write a short note on the ‘shape of cells’ or ‘cell shape’.
Q.5: Write short notes on the following:
(a) Gene
(b) Chromosomes
(c) Organelles
(d) Vacuole
(e) Tissues
(f) Plastids.
Q.7: Why Plastids are said as ‘Kitchen of plant cells’?
Q.8: Differentiate between Plant cell and animal cell.
Q.9: Write a short note on ‘Nucleus of a cell’?
Click here to see the Answers
