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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
Write names of cell organelles.
Draw a well labelled diagram of animal cell and mention one function of the main cell organelles.
What are centrioles? Write about their functions.
Name the following
(a) The cell organelle which synthesizes protein.
(b) The type of plastid which stores food.
Give functions.
Vacuole
Name the part of the cell concerned with the following :
Initiation of cell division
How many chromosome pairs are found in human cells?
Fill in the blanks :
Very thin flexible, a living membrane which is differentially permeable, is called__________.
Fill in the blanks :
More than a thousand chromosomes are found in the nucleus of certain _______.
Distinguish between the following pairs of science :
Cell wall and cell membrane
State the major function of the following :
Mitochondria:
Put a tick mark (✓) against the correct alternative in the following statement:
The organelle that controls all activities in
Put a tick mark (✓) against the correct alternative in the following statement:
A cell that is spherical in shape is
Put a tick mark (✓) against the correct alternative in the following statement:
The vacuole contains:
Fill in the blanks:
Golgi bodies are also called ______.
Write true or false for each statement. Rewrite the false statements correctly:
The nuclear membrane encloses a colourless, dense fluid called nucleoplasm
A typical cell consists of ______ major parts.
Identify the cellular structure with the help of the following clue:
It destroys foreign substances.
Identify the cellular structure with the help of the following clue:
It initiates and regulates cell division.
Define the following term:
Organelles
