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प्रश्न
Which of the following is not correct?
पर्याय
Robert Brown discovered the cell.
Schleiden and Schwann formulated the cell theory.
Virchow explained that cells are formed from pre-existing cells.
A unicellular organism carries out its life activities within a single cell.
उत्तर
Robert Brown discovered the cell.
Explanation:
Robert Hooke discovered the cell and Robert Brown discovered the nucleus in the cell.
APPEARS IN
संबंधित प्रश्न
Cell is the basic unit of life. Discuss in brief.
Indicate whether the following statements are True (T) or False (F).
Unicellular organisms have one-celled body. (T / F)
Indicate whether the following statements are True (T) or False (F).
Muscle cells are branched. (T / F)
Arrange in a correct sequence
Hen's Egg, Ostrich's egg, Insect's egg.
I convert the Sun’s energy into food for the plant. Who am I?______
On the lines given below, write about what you have learned from the activities done in this lesson.
Let me tell you about some of the important things I’ve learned about cells. First, I’ll start with…______
______ is the basic structural and functional unit of every living organism.
Nowadays an ______ microscope is used to magnify and observe the cells.
In Latin, the word ‘cellula’ means a ______.
The branch of science that deals with the study of cells is called ______.
All the cells can be seen with our naked eye.
Name the organelle without membrane.
Why are lysosomes also known as “scavengers of the cells”?
Choose the correct statement with respect to unicellular organisms.
The table given below has certain terms and four blank spaces named A, B, C and D.
| Cell | Feature/part | Function |
| Amoeba | A | Movement |
| Plant Cell | Plastid | B |
| C | Spindle shaped | Contraction |
| Nerve Cell | D | Stimuli and response |
From the options given below choose the correct combination of terms.
Match the terms given in column I with their functions given in column II and fill the blanks given below the table :
| Column I | Column II |
| A. Chloroplast | i) carries hereditary characters |
| B. Cell membrane | ii) controls the activities of cells |
| C. Nucleus | iii) site of photosynthesis |
| D. Chromosome | iv) controls the movement of materials into and out of cells. |
A - ______ ; B - ______ ; C - ______ ; D - ______
Give two examples of stains which make the nucleus distinct.
Define the following term:
Cell
