Home
Class 12
BIOLOGY
Read the assertion and reason carefully ...

Read the assertion and reason carefully to mark the correct option in question.
1. Assertion: Cell is the fundamental structural and functional unit of all living organisms.
Reason: Anything less than a complete structure of a cell does not ensure independent living.

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.

B

If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that "Cell is the fundamental structural and functional unit of all living organisms." - This means that every living organism, whether unicellular or multicellular, is made up of cells, which perform all necessary life functions. 2. **Understanding the Reason**: - The reason states that "Anything less than a complete structure of a cell does not ensure independent living." - This implies that for an organism to live independently, it must have a complete cell structure capable of performing all life processes. 3. **Connecting Assertion and Reason**: - The assertion is supported by the reason because if a complete cell structure is necessary for independent living, then it reinforces the idea that cells are the basic units of life. - Unicellular organisms, which consist of a single cell, demonstrate that a complete cell can carry out all life functions independently. 4. **Evaluating Truthfulness**: - Both the assertion and the reason are true statements. - The reason accurately explains why the assertion is valid. 5. **Conclusion**: - Since both the assertion and the reason are true, and the reason correctly explains the assertion, the correct option is A: "Both assertion and reason are true, and the reason is the correct explanation for the assertion."
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • CELL BIOLOGY (CELL STRUCTURE, FUNCTION & CELL DIVISION)

    ALLEN|Exercise EXERCISE-I (Conceptual Questions)|65 Videos
  • CELL BIOLOGY (CELL STRUCTURE, FUNCTION & CELL DIVISION)

    ALLEN|Exercise EXERCISE-II (Previous Year Questions)|2 Videos
  • CELL BIOLOGY (CELL STRUCTURE, FUNCTION & CELL DIVISION)

    ALLEN|Exercise EXERCISE-III(B) (ANALYTICAL QUESTIONS)|11 Videos
  • BREATHING AND EXCHANGE OF GASES

    ALLEN|Exercise S|33 Videos
  • CELL CYCLE AND CELL DIVISION

    ALLEN|Exercise EXERCISE|61 Videos

Similar Questions

Explore conceptually related problems

Cell is the fundarmental structural and functional unit of all living organisms because

TRUE OR FALSE : Cell is the fundamental structural and functional unit of living organism.

Structural, functional and hereditary unit of all living organisms is

Assertion: Anatomy deals with the structure and functions of the organisms. Reason: All the plants are autotrophic.

Read the assertion and reason carefully to mark the correct option out of the option given below: Assertion: Blood sugar level falls rapidly after heptactomy. Reason: The glycogen of the liver in the principal source of blood sugar

Read the assertion and reason carefully to mark the correct option in question. Assertion: In the cell membrane , the non-polar tail of saturated hydrocarbons is protected from the aqueous environment. Reason: The lipids are arranged within the membrane with polar head towards the outer sides and the hydrophobic tail towards the inner part.

Read the assertion and reason carefully to mark the correct option in question. Assertion: Golgi apparatus remains in close association with the endoplasmic reticulum. Reason: A number of proteins synthesised by ribosomes on the ER are modified in the cisternae of the GB before they are released from the trans face.

Read the assertion and reason carefully to mark the correct option out of the option given below: Assertion: Carbohydrates are more suitable for the production of energy in the body than proteins and fats. Reason : Carbohydrates can be stored in the tissues as glycogen for use in the production of energy, whenever necessary. If both assertion and reason are true and reason is the correct explanation of assertion. If both assertion and reason are true but reason is not the correct explanation of assertion. If assertion is true but reason is false. If both assertion and reason are false.

Read the assertion and reason carefully to mark the correct option out of the option given below: Assertion: Thick layers of muscles are present in the wall of alimentary canal. Reason: These muscles help in the mixing of food materials with the enzymes coming from different glands in the alimentary canal.

Read the assertion and reason carefully to mark the correct option out of the options given below: Assertion : After hearing a sound, nerve impulse passes from neurons to the brain. Reason: The neurons which pass nerve impulses from the body organ to the brain is called afferent neuron.