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प्रश्न
Distinguish between the following pairs of terms :
Centrosome and chromosome
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उत्तर
| Centrosome | Chromosome | ||
| (i) | It is a clear area of cytoplasm close to the nucleus, from which spindle fibres develop during cell division. | (i) | Chromosomes carry hereditary information or genes, which transmit genetic characters from parents to offspring. |
| (ii) | A centrosome is found only in an animal cell. | (ii) | Chromosomes are found in the nucleus of both animal and plant cells. |
| (iii) | These are found outside the nucleus. | (iii) | These are found inside the nucleus. |
| (iv) | It consists of centrioles and centrospheres. | (iv) | It consists of nucleic proteins and nucleic acids |
संबंधित प्रश्न
Who am I?
I support the cell, but I am not a cell wall. I have a body resembling a net.
What would have happened? If.........
Plants lacked anthocyanin.
Who is odd man among us? Give reason.
Give functions.
Cytoplasm
Give functions.
Vacuole
Which of the following cell organelles is correctly matched with its function?
Match the item in column 'A' with those in column 'B'.
| Column A | Column B |
| (a) Vacuoles | (i) Intracellular digestion |
| (b) Nucleolus | (ii) Respiratory enzymes |
| (c) Lysosomes | (iii) Covered by tonoplast |
| (d) Anthocyanin | (iv) Dissolved in the cytoplasm |
| (e) Cristae | (v) Forms RNA |
Fill in the blanks :
Very thin flexible, a living membrane which is differentially permeable, is called__________.
Fill in the blanks :
_______ are hereditary units.
Mention any three differences between a living cell and a brick in a wall.
State the major function of the following :
Ribosome
State the major function of the following :
Glycogen granule
State the difference between cytoplasm and protoplasm
Fill in the blanks:
The jelly-like fluid that surrounds the nucleus of a cell is called ______.
Write true or false for each statement. Rewrite the false statements correctly:
The nuclear membrane encloses a colourless, dense fluid called nucleoplasm
Organelle without a cell membrane is
Identify the cellular structure with the help of the following clue:
It is made up of DNA threads.
Identify the cellular structure with the help of the following clue:
It initiates and regulates cell division.
Give two examples of cell organelles.
