Biology
Assertion (A): Cristae are the finger-like projections arising from the inner walls of mitochondria.
Reason (R): These projections increase the surface area of the inner membrane and help in the production of ATP.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Answer
Both A and R are true and R is the correct explanation of A.
Reason — A is True because cristae are inward foldings or finger-like projections of the inner membrane of mitochondria.
R is True as these folds increase the surface area of the inner membrane. This provides more space for the enzymes and components needed for ATP production during respiration.
Since the reason correctly explains the function and importance of cristae, R is the correct explanation of A.
Therefore, Both A and R are true and R is the correct explanation of A is the correct option.
Related Questions
Assertion (A): Ribosomes are considered as the 'delivery system of the cell'.
Reason (R): Delivery system is concerned with the secretions of the cell including enzymes, hormones, etc.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
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Assertion (A): Leukoplasts are colourless plastids as they have no pigments.
Reason (R): Leukoplasts are normally found in the non-photosynthetic parts of a plant.
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Assertion (A): Euglena is an example of a unicellular, eukaryotic organism.
Reason (R): This organism is microscopic and has a well-defined nucleus.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Chromosomes carry hereditary information from parents to offspring.
Reason (R): Chromosomes are suspended in the cytoplasm of each cell whether its a plant cell or an animal cell. Chromosomes are composed of RNA threads.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.