Advertisements
Advertisements
Question
Distinguish between the following pairs of terms :
Centrosome and chromosome
Solution
| 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 |
APPEARS IN
RELATED QUESTIONS
Why is the cell called the structural and functional unit of life?
Complete the crossword with the help of clues given below.
Across
1. This is necessary for photosynthesis.
3. Term for component present in the cytoplasm.
6. The living substance in the cell.
8. Units of inheritance present on the chromosomes.
Down
1. Green plastids.
2. Formed by collection of tissues.
4. It separates the contents of the cell from the surrounding medium.
5. Empty structure in the cytoplasm.
7. A group of cells.
Write names of 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.
What would have happened? If.........
There had been no differences between mitochondria and plastids.
Who is odd man among us? Give reason.
Give functions.
Lysosome
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 |
Name the part of the cell concerned with the following :
Liberation of energy
_________ consists of membranous sacs and secrets 40 types of digestive enzymes.
Fill in the blanks :
__________ is a plastid which stores starch.
Distinguish between the following pairs of terms :
Nucleolus and nucleus
Put a tick mark (✓) against the correct alternative in the following statement:
The vacuole contains:
Write true or false for each statement. Rewrite the false statements correctly:
At the time of cell division the chromatin network changes into small thread-like structures called genes
Write true or false for each statement. Rewrite the false statements correctly:
Ribosomes are the sites of respiration in a cell
Identify the cellular structure with the help of the following clue:
A non-living rigid layer surrounding the plasma membrane.
Identify the cellular structure with the help of the following clue:
It contains chromatin fibres.
Define the following term:
Organelles
