Structure and Functions
Q1. Fill in the blanks.
is called the living substance of the cell.
A tissue is a group of similar cells
performing a specific function.
in the living organisms are basic structural units.
Egg white is called the albumen.
The size of the cell is related to its function.
Each organ is further made up of smaller
parts called tissues.
All organisms are made of smaller parts
Unicellular organisms have one-celled body.
Muscle cells are branched. False
Bacterial cell also has a cell wall. True
The basic living unit of an organism is an
Amoeba has irregular shape. True
Cells in the living organisms are complex
living structures. True
A cell wall is present in animal cells. False
Q3. Where are genes located?
Ans. Genes are
located on chromosomes.
Q4. What is the basic living unit of an organism?
Ans. Cell is the basic living unit of an organism.
Q5. What do chloroplasts contain?
Ans. Chloroplasts contain chlorophyll.
Q6. Name the instrument used to study cells.
is used to study cells.
Q7. Do animal cells have a cell wall?
Ans. No, animal cells do not have a cell wall.
Q8. What is a nucleolus?
Ans. A smaller spherical body in the nucleus is called
Q9. Name the scientist who coined the term cell.
Ans. Robert Hooke coined the term ‘cell’.
Q10. Name one cell in human body which is spherical in shape.
Give an example of spherical cell.
Ans. Spherical red blood cells
Q11. Which part of a cell controls all the activities of the
Ans. Nucleus acts as control centre of the activities
of the cell.
Q12. Name the outermost layer of an animal cell.
Ans. Cell membrane is the outermost layer of an animal
Q13. What are the units of inheritance in living organisms?
Ans. Chromosomes are the units of inheritance in
Q14. What is nucleus?
The central dense round body in the centre is called the nucleus.
Q15. Which is the largest floating body generally in the centre
of a cell?
Ans. Nucleus is the largest floating body generally in
the centre of a cell.
Q16. What is vacuole?
Ans. Any blank-looking structure in the cytoplasm is
Q17. What is tissue?
Ans. A tissue is a group of similar cells performing a
Q18. Which cell receives and transfers messages?
Ans. The nerve cell (or a neuron) receives and
Q19. Name the spindle shaped cells present in the human body.
Ans. Spindle shaped muscle cells
Q20. What is the basic similarity among all the living organisms
(plants and animals)?
the living things (plants and animals) are made from cells.
Q21. What are prokaryotic cells?
Ans. Cells without well organised nucleus, i.e.
lacking nuclear membrane, are called prokaryotic cells.
Q22. What is the layer outside the cell membrane of a plant cell
Ans. In addition to the cell membrane, there is an outer
thick layer in cells of plants called cell wall.
Q23. Name the organelle of a plant cell where photosynthesis
Ans. In plants, photosynthesis takes place in
chloroplasts, which contain the chlorophyll.