Home
Class 12
BIOLOGY
Assertion : Best adapted and less adapte...

Assertion : Best adapted and less adapted individuals reproduce at the same rate.
Reason: Natural selection favour them equally.

A

If both Assertion and Reason are true and Reason is a correct explanation of Assertion

B

If both Assertion and Reason are true but Reason is not a correct explanation of Assertion.

C

If Assertion is true but Reason is false

D

If both Assertion and Reason are false

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Assertion**: The assertion states that "Best adapted and less adapted individuals reproduce at the same rate." This implies that both groups have equal reproductive success. 2. **Evaluating the Assertion**: In reality, best adapted individuals tend to have a higher reproductive rate compared to less adapted individuals. This is because they are more suited to their environment, which allows them to survive and reproduce more effectively. 3. **Understanding the Reason**: The reason given is that "Natural selection favors them equally." This suggests that natural selection does not discriminate between the best adapted and less adapted individuals. 4. **Evaluating the Reason**: This statement is also incorrect. Natural selection tends to favor those individuals that are better adapted to their environment. Therefore, the best adapted individuals are more likely to survive and reproduce than less adapted individuals. 5. **Conclusion**: Both the assertion and the reason are false. The assertion is incorrect because the reproductive rates are not equal; the best adapted individuals reproduce at a higher rate. The reason is also incorrect because natural selection does not favor both groups equally. ### Final Answer: Both assertion and reason are false. ---

### Step-by-Step Solution: 1. **Understanding the Assertion**: The assertion states that "Best adapted and less adapted individuals reproduce at the same rate." This implies that both groups have equal reproductive success. 2. **Evaluating the Assertion**: In reality, best adapted individuals tend to have a higher reproductive rate compared to less adapted individuals. This is because they are more suited to their environment, which allows them to survive and reproduce more effectively. 3. **Understanding the Reason**: The reason given is that "Natural selection favors them equally." This suggests that natural selection does not discriminate between the best adapted and less adapted individuals. ...
Promotional Banner

Topper's Solved these Questions

  • EVOLUTION

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST (SECTION-A)(MULTIPLE CHOICE QUSTIONS )(ONE MARK EACH)|6 Videos
  • EVOLUTION

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST (SECTION-B)(SHORT ANSWER TYPE - I QUSTIONS )(TWO MARK EACH)|5 Videos
  • EVOLUTION

    MODERN PUBLICATION|Exercise COMPETITION FILE (OBJECTIVE TYPE QUESTIONS)(B. MATCHING TYPE QUESTIONS )|4 Videos
  • ECOSYSTEM

    MODERN PUBLICATION|Exercise Chapter Practice Test (Section - D) (Case - Based Short Answer Type Questions)|5 Videos
  • HUMAN HEALTH AND DISEASES

    MODERN PUBLICATION|Exercise Chapter Practice Test|2 Videos

Similar Questions

Explore conceptually related problems

Assertion :- Outbreeding never involves breeding between individuals of same breed. Reason :- Outbreeding is carried out between individuals of different breed or species.

Assertion (A): All the cells in an individual possess same DNA. Reason (R ): DNA replication involves com plementary base pairing.

Assertion: Disruptive selection changes the population towareds one particular direction. Reason: This type of selection favours average sized individuals.

Assertion: Cresols are less acidic than phenol. Reason: Electron releasing grops do not favour the formation of phenxide ion.

Assertion : The cardiac output of an ordinary man and of an athlete is the same Reason : It is impossible to alter the stroke volume as well as heart rate.

Assertion:Waxy and cutin coating on plant parts reduce the transpiration. Reason:These adaption are found in xerophytes.

Assertion : Natality rate increases the population size and population density both. Reason : Natality increase the number of individuals in an area by births.

Assertion : Natural rubber is soft, sticky and has less tensile strength. Reason : Natural rubber is a polymer of 2-methyl buta-1, 3-diene monomers.