Q 1 – Nucleus is separated from cytoplasm by
(a) nuclear membrane
(b) nucleoplasm
(c) organs
(d) cell membrane
Q 2 – The liquid material in the nucleus is
(a) chromosomes
(b) bacteria
(c) nucleoplasm
(d) nucleolus
Q 3 – Cells present in living organism differ in
(a) numbers
(b) shape
(c) size
(d) all of these
Q 4 – Cells which lack nuclear membrane are
(a) eukaryotic cells
(b) prokaryotic cells
(c) single cells
(d) multicells
Q 5 – The control centre of all the activities of a cell is
(a) nucleus
(b) nucleoplasm
(c) cytoplasm
(d) organelles
Q 6 – The coloured organelles which are found in plants only are
(a) chlorophyll
(b) plastids
(c) vacuoles
(d) WBC
Q 7 – A group of similar cells combine to form
(a) tissue
(b) organ
(c) organisms
(d) organelles
Q 8 – The organism containing only a single cell is called
(a) unicellular organism
(b) multicellular organism
(c) organelle
(d) all of these
Q 9 – Genes are located in
(a) chromosomes
(b) plastids
(c) cytoplasm
(d) lysosome
Q 10 – Cell walls is found in
(a) plant cells only
(b) animal cells only
(c) both (a) and (b)
(d) none of them
Q 10 – Cell walls is found in
(a) plant cells only
(b) animal cells only
(c) both (a) and (b)
(d) none of them
Q 12 – True or false
- Cytoplasm is not a part of cell.
- Cell wall surrounds the cell membrane.
- A group of similar cells is called tissue.
- Tissues combine to form an organism.
- Cell are of different sizes.
Q 13 – Match the following
Column A | Column B |
1. Epithelial cells | (a) Spindle shaped |
2. Smooth muscle | (b) Round cells |
3. Nerve cells | (c) Flattened |
4. Egg cells | (d) Long and branched |
5. Cell wall | (e) Dead |
Q 14 – What is the function of cell wall?
Q 15 – What do you mean by unicellular and multicellular organisms?
Q 16 – Give a brief description of nucleus.
Q 17 – Name the following:
Q 18 – Differentiate between
(a) Cell wall and cell membrane
(b) Leucoplast and chloroplast
(c) Vacuole in a plant cell and an animal cell
(d) A tissue and an organ
Q 19 – What are the main functional regions of a cell? Explain.
Q 20 – Define nucleus and state its major parts.
Q 21 – In a cell, every cell organelle perform its own function. They coordinate the functions of cell.
Q 22 – Visit an agriculture extension centre in your area. Find out about genetically modified (GM) crops. Prepare a short speech for your class on this topic.
Q 23 – Find out about Bt cotton from an agriculture expert (or from envfor.nic.in/divisions/csnrv/ btcotton/bgnote.pdf). Prepare a short note on its advantages/disadvantages.