Science - Class 8 (C ...

Q1. Fill in the blanks.

                          i.        ______________ is called the living substance of the cell.

                         ii.        A __________ is a group of similar cells performing a specific function.

                        iii.        __________ in the living organisms are basic structural units.

                        iv.        Egg white is called the _____________.

                         v.        The size of the cell is related to its _____________.

                        vi.        Each organ is further made up of smaller parts called ________.

         vii.        All organisms are made of smaller parts called ____________.

 

Q2. True/False

                         i.        Unicellular organisms have one-celled body. ________

                        ii.        Muscle cells are branched. __________

                       iii.        Bacterial cell also has a cell wall. _________

                       iv.        The basic living unit of an organism is an organ. _________

                        v.        Amoeba has irregular shape. __________

                       vi.        Cells in the living organisms are complex living structures. _______

         vii.        A cell wall is present in animal cells. ________

 

Q3. Where are genes located?

 

Q4. What is the basic living unit of an organism?

 

Q5. What do chloroplasts contain?

 

Q6. Name the instrument used to study cells.

 

Q7. Do animal cells have a cell wall?

 

Q8. What is a nucleolus?

 

Q9. Name the scientist who coined the term cell.

 

Q10. Name one cell in human body which is spherical in shape.

Or

Give an example of spherical cell.

 

Q11. Which part of a cell controls all the activities of the cell?

 

Q12. Name the outermost layer of an animal cell.

 

Q13. What are the units of inheritance in living organisms?

 

Q14. What is nucleus?

 

Q15. Which is the largest floating body generally in the centre of a cell?

 

Q16. What is vacuole?

 

Q17. What is tissue?

 

Q18. Which cell receives and transfers messages?

 

Q19. Name the spindle shaped cells present in the human body.

 

Q20. What is the basic similarity among all the living organisms (plants and animals)?

 

Q21. What are prokaryotic cells?

 

Q22. What is the layer outside the cell membrane of a plant cell called?

 

Q23. Name the organelle of a plant cell where photosynthesis takes place.