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Question
What would have happened? If.........
Genes had been absent on the chromosomes.
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Solution
On chromosomes, genes are regarded as functional segments. The structural and operational unit of heredity is the gene. If genes are missing from the chromosomes, the offspring will not resemble the parent. Since the gene is the genetic unit that transmits the traits from one parent to the next, the absence of genes will prevent the baby from resembling its parents. It resides in a nucleus and is composed of DNA.
RELATED QUESTIONS
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.
What would have happened? If .........
There had been no differences between mitochondria and plastids.
Give functions.
Lysosome
Name the plastid and pigment likely to be found in the cells of :
State the major function of the following :
Golgi apparatus
Put a tick mark (✓) against the correct alternative in the following statement:
Identify the part which contain pigment
Put a tick mark (✓) against the correct alternative in the following statement:
A cell that is spherical in shape is
Fill up the blank with the terms given below
Plastids contain ______.
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:
At the time of cell division the chromatin network changes into small thread-like structures called genes
