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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 |
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संबंधित प्रश्न
Cells are the basic structural units of living organisms’. Explain
What are main functional regions of the cell?
Who am I?
I am chemical factory of the cell.
What would have happened? If.........
RBCs had mitochondria.
Give functions.
Cytoplasm
Give functions.
Vacuole
Who gives me the colour? (Select the correct option)
| a. Red tomato | 1. Chlorophyll |
| b. Green leaf | 2. Carotene |
| c. Carrot | 3. Anthocyanin |
| d. Violet | 4. Lycopene |
State whether the following statement is true (T) or False (F):
Anthocyanins are the pigments of flowers, which are dissolves in cell-sap.
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 :
__________ is a plastid which stores starch.
Distinguish between the following pairs of science :
Cell wall and cell membrane
Why are the cells generally of a small size?
State the major function of the following :
Plasma membrane
State the major function of the following :
Vacuoles
Put a tick mark (✓) against the correct alternative in the following statement:
A cell that is spherical in shape is
State the difference between Nucleus and nucleolus
Write true or false for each statement. Rewrite the false statements correctly:
Chromoplasts are the kitchen of the cell
Give one main function of the following:
Endoplasmic Reticulum
A typical cell consists of ______ major parts.
