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प्रश्न
Which of the following is not correct?
विकल्प
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.
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उत्तर
Robert Brown discovered the cell.
Explanation:
Robert Hooke discovered the cell and Robert Brown discovered the nucleus in the cell.
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संबंधित प्रश्न
Indicate whether the following statements are True (T) or False (F).
Muscle cells are branched. (T / F)
Choose the correct option.
Cell Membrane is composed of ______.
A cell is the smallest unit of life.
Basis unit of life.
Classify the following terms into cells, tissues, organs and write in the tabular column given below
Neuron, Lungs. Xylem, brain, adipose, Leaf, RBC, WBC, hand, muscle, heart, ovum, squamous, phloem, cartilage.
| Cell | Tissue | organ |
The cell is self-sufficient and carries out all the fundamental and essential functions of an organism.
Analogy:
Smallest cell: virus.
Biggest cell: ______.
Name the largest Angiosperm cell
Name the organelle without membrane.
Which of these options are not a function of Ribosomes?
- It helps in manufacture of protein molecules
- It helps in manufacture of enzymes
- It helps in manufacture of hormones
- It helps in manufacture of starch molecules
Name the organelles which show the analogy written as under
Power house of the cell——
Name the organelles which show the analogy written as under
Packaging and dispatching unit of the cell——
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.
Fill in the blanks with the terms given in the box below:
| Nucleus, chromosomes, cell wall, cell membrane, protoplasm, cytoplasm, ribosome, cell organelles |
The outermost layer of plant cells is the ___(a)___ beneath which is the ___(b)___. The term ___(c)___ refers to the jelly-like substance containing all the ___(d)___. The ___(e)___ contains thread-like structures called ___(f)___.
______ is the largest organelle.
The smallest cell in the human body is ______.
______ first saw and described a live cell.
Give two examples of stains which make the nucleus distinct.
