Comments 0 Feedbacks on “Class 12 Evolution MCQs with Answers”Class 12th Biology MCQs by rs.ritendra

Class 12 Evolution MCQs with Answers

Class 12 Chemistry Evolution MCQs with Answers

Class 12 Chemistry MCQs on “Evolution” provide students with a comprehensive platform to master this significant topic. Covering various aspects of evolution, including theories, mechanisms, evidence, and the role of chemistry in evolutionary processes, these multiple-choice questions offer thorough preparation for Class 12 Chemistry exams.

Our MCQs challenge students to apply their knowledge of evolutionary concepts to solve problems and analyze scenarios, fostering critical thinking and analytical skills essential for success in exams. Each MCQ is accompanied by a detailed answer explanation, enabling students to grasp the underlying concepts thoroughly.

By practicing Class 12 Chemistry MCQs on “Evolution” at Horizon Competition School, students not only prepare effectively for their exams but also gain a deeper understanding of the mechanisms and patterns of evolution, as well as the role of chemistry in shaping the natural world.

Q1. Variations during mutations of meiotic recombinations are:

  1. Random and directionless.
  2. Random and directional.
  3. Random and small.
  4. Random, small and directional.
Click To View The Answer

Ans: 1. Random and directionless.
Variations during mutations of meiotic recombinations are random and directionless.

Q2. The most accepted line of descent in human evolution is:

  1. Australopithecus → Ramapithecus → Homo sapiens → homo habilis.
  2. Homo erectus → Homo habilis → Homo sapiens.
  3. Ramapithecus → Homo habilis → Homo erectus → Homo sapiens.
  4. Australopithecus → Ramapithecus → Homo erectus → Homo habilis → Homo sapiens.
Click To View The Answer

Ans: 3. Ramapithecus → Homo habilis → Homo erectus → Homo sapiens.

Q3. A biogeographical evidence in favour of organic evolution is provided by:

  1. Archaeopteryx.
  2. Modern horse.
  3. Darwin’s finches.
  4. Python
Click To View The Answer

Ans: 3. Darwin’s finches.

Q4. Darwin judged the fitness of individuals by:

  1. Ability to defend itself.
  2. Strategy to obtain food.
  3. Number of offspring produced.
  4. Dominance over other individuals.
Click To View The Answer

Ans: 3. Number of offspring produced

Q5. Which type of selection is industrial melanism observed in moth, Biston bitularia:

  1. Stabilising.
  2. Directional.
  3. Disruptive.
  4. Artificial.
Click To View The Answer

Ans: 2. Directional.
Industrial melanism is not a mean character but is acquired by most of the individuals. Hence, it is an example of directional change.

Q6. For the MN-blood group system, the frequencies of M and N alleles are 0.7 and 0.3, respectively. The expected
frequency of MN-blood group bearing organisms is likely to be:

  1. 42%.
  2. 49%.
  3. 9%.
  4. 58%.
Click To View The Answer

Ans: 1. 42%.

Q7. The theory of spontaneous generation stated that:

  1. Life arose from living forms only.
  2. Life can arise from both living and non-living.
  3. Life can arise from non-living things only.
  4. Life arises spontaneously, neither from livinClick To View The Answerg nor from the non-living.
Click To View The Answer

Ans: 3. Life can arise from non-living things only.
For a long time it was also believed that life came out of decaying and rotting matter like straw, mud, etc.
According to theory of abiogenesis, life originates from non-living.

Q8. (p + q)2 = P2 + 2pq + q2 = 1 represents an equation used in:

  1. Population genetics.
  2. Mendelian genetics.
  3. Biometrics.
  4. Molecular genetics.
Click To View The Answer

Ans: 1. Population genetics.
(p + q)2 = p2 + 2pq + q2 = 1 represents an equation used in population genetics.
Above equation is known as Hardy-Weinberg principle in which
p2 – Dominant homozygous
2pq – Heterozygous
q2 – Recessive homozygous

Q9. Evolution of life shows that life forms had a trend of moving from:

  1. Land to water.
  2. Dryland to wet land.
  3. Fresh water to sea water.
  4. Water to land.
Click To View The Answer

Ans: 4. Water to land.
Most of the primitive organisms live in water, while most of the complex organisms live on land. This shows that evolution of life
progressed from water to land.

Q10. Homologous organs indicate:

  1. Convergent evolution.
  2. Divergent evolution.
  3. Adaptive radiation.
  4. Natural selection.
Click To View The Answer

Ans: 2. Divergent evolution.

Q11. Fossils are generally found in:

  1. Sedimentary rocks.
  2. Igneous rocks.
  3. Metamorphic rocks.
  4. Any type of rock.
Click To View The Answer

Ans: 1. Sedimentary rocks.
Igneous rocks are formed from lava and hence no fossil can be found in them. Metamorphic rocks can be made from igneous or
sedimentary rocks. Hence, ‘a’ is the correct answer.

Q12. Evolutionary convergence is characterised by:

  1. Development of characteristics by random mutations.
  2. Development of similar characteristics in different groups of organisms of different ancestry.
  3. Development of dissimilar characteristics in closely related groups of organisms.
  4. Development of similar characteristics in related groups of organisms.
Click To View The Answer

Ans: 2. Development of similar characteristics in different groups of organisms of different ancestry

Q13. Which of the following is an example for link species?

  1. Lobe fish.
  2. Dodo bird.
  3. Sea weed.
  4. Tyrannosaurus rex.
Click To View The Answer

Ans: 1. Lobe fish.

Lobe fish shows characters from cartilaginous fishes and from amphibia. They belong to bony fishes. Since, they show characters from
two other groups of animals, they are considered as link species.

Q14. Appearance of antibiotic-resistant bacteria is an example of:

  1. Adaptive radiation.
  2. Transduction.
  3. Pre-existing variation in the population.
  4. Divergent evolution.
Click To View The Answer

Ans: 3. Pre-existing variation in the population.

Q15. Analogous organs arise due to:

  1. Divergent evolution.
  2. Artificial selection.
  3. Genetic drift.
  4. Convergent evolution.
Click To View The Answer

Ans: 4. Convergent evolution.

FAQs

How do MCQs on “Evolution” in Class 12 Chemistry help students understand the key concepts and mechanisms of evolutionary biology?

MCQs on “Evolution” play a crucial role in helping Class 12 Chemistry students grasp fundamental concepts and mechanisms of evolutionary biology. These MCQs cover topics such as natural selection, genetic drift, speciation, evidence of evolution, and the role of chemistry in evolutionary processes. By engaging with these MCQs, students can reinforce their understanding of evolutionary principles and mechanisms, enabling them to analyze evolutionary scenarios and solve problems effectively.

What strategies can students employ to effectively prepare for Class 12 Chemistry exams using MCQs on “Evolution”?

To effectively prepare for exams using MCQs on “Evolution,” students should first ensure a solid understanding of the fundamental concepts covered in their curriculum. They can then practice solving a variety of MCQs from reputable sources, focusing on different aspects of evolution such as theories, mechanisms, evidence, and applications. It’s essential to analyze both correct and incorrect answers to deepen understanding and identify areas for improvement. Additionally, students can use MCQs to simulate exam conditions, helping them become familiar with the format and timing of the actual examination. Regular practice with MCQs, coupled with comprehensive revision of concepts, can significantly enhance students’ performance in Class 12 Chemistry exams.