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प्रश्न
What is a chromosome?
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उत्तर
During cell division, the long and fibrous hereditary material, chromatin gets converted into a short, thick, and ribbon-like structure called a chromosome.
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संबंधित प्रश्न
State the difference between eukaryotes and prokaryotes
Name the scientist who invented the first microscope.
Fill up the blank with the terms given below
The ____ is the structural unit of all living things
Match the name of the organelle given in Column A with its function given in Column B.
| Column A (Organelle) | Column B (Function) | ||
| 1 | leucoplast | a | help in cell division |
| 2 | nucleus | b | transport of material |
| 3 | ribosomes | c | making food |
| 4 | mitochondria | d | digesting foreign bodies |
| 5 | endoplasmic reticulum | e | storage of starch and proteins |
| 6 | golgi bodies | f | making the cell turgid |
| 7 | chloroplast | g | making proteins |
| 8 | centrosome | h | controlling all the vital activities of a cell |
| 9 | vacuole | i | releasing energy |
| 10 | lysosomes | j | synthesis of cell wall in a plant cell |
Write a short answer.
Why is a cell called the structural unit of a living organism?
Justify the statement "cell is the basic unit of life"
What is the function of the following?
Ribosomes
Fill in the blank with a suitable word:
Cell ______ was proposed by Schleiden and Schwann.
Answer the following question.
Who discovered cells, and how?
Answer the following question.
Why is the cell called the structural and functional unit of life?
