Biology · Science General

Evolution and Biological Adaptation

1,354 Questions

Evolution and biological adaptation focus on natural selection, speciation events, and how organisms adjust to environmental changes over time. These foundational biology concepts appear frequently in general science sections of civil services and school board examinations. Use these questions to study evolutionary theories, ancestral traits, and the fossil record.

Natural selection mechanismsSpeciation event examplesBiological adaptation traitsPanspermia hypothesis conceptsFossil record analysisMate selection theories

Evolution and Biological Adaptation Questions

Multiple choice

What is Darwin’s explanation for the occurence of evolution?

  1. God determines which species should evolve.

  2. Adaptations enable a species to produce more offspring by natural selection.

  3. Certain species undergo mutations.

  4. The traits used most often persist longer.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The correct option is (2).

Multiple choice

Why do organisms look similar?

  1. Because of their similar body designs

  2. Because of the similar functioning of their cells

  3. Because of their similar cell organelles

  4. Because of the totipotency of their cells
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Organisms look similar because their body designs are similar.

Multiple choice

Which of the following characterstics is not suitable to define growth?

  1. A permanent increase in size

  2. Cell enlargement

  3. Cell division

  4. Independence on environment
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The degree of plant growth is dependent on the environment. Plant development is dependent on the environmental conditions where it is growing. Because light is the energy source for plant growth, plants have evolved highly sensitive mechanisms for perceiving light and using that information for regulating development changes to help maximise light utilisation for photosynthesis.

Multiple choice

Changes in the environment can cause

  1. evolution all of a sudden

  2. species to remain the same

  3. population to change over time

  4. no observable changes in organisms
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Changes in the environment can cause population to change over time.

Multiple choice

Which of these fits gap 23?

Directions: Complete this passage by selecting the most suitable option for the corresponding gap.

Islands are bodies or pieces of land that are completely ______(21)_____ by water, and are cut off from larger bodies of land that are attached to a continent and are called mainland. Islands have been homes to different cultures throughout our history. Separated from mainland, and relatively isolated, some islands of the oceans still carry the older cultures and _____(22)____ of humans. Islands also preserve animals and plants, in rather _______(23)______ conditions. In fact, it was through his visit to the Galapagos Islands, and through observing the animals there, that Charles Darwin came to _____(24)_____ the theory of evolution of man.

  1. hardy

  2. different

  3. unchanged

  4. movable
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Since they want to maintain everything as it is, therefore, they preserve the animals and plants in unchanged conditions.

Multiple choice

Which of these fits gap 21?

Directions: Complete this passage by selecting the most suitable option for the corresponding gap.

Islands are bodies or pieces of land that are completely ______(21)_____ by water, and are cut off from larger bodies of land that are attached to a continent and are called mainland. Islands have been homes to different cultures throughout our history. Separated from mainland, and relatively isolated, some islands of the oceans still carry the older cultures and _____(22)____ of humans. Islands also preserve animals and plants, in rather _______(23)______ conditions. In fact, it was through his visit to the Galapagos Islands, and through observing the animals there, that Charles Darwin came to _____(24)_____ the theory of evolution of man.

  1. submerged

  2. created

  3. surrounded

  4. hidden
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Islands are from all sides surrounded by water, therefore, (3) is the correct answer.

Multiple choice

Which of these fits gap 24?

Directions: Complete this passage by selecting the most suitable option for the corresponding gap.

Islands are bodies or pieces of land that are completely ______(21)_____ by water, and are cut off from larger bodies of land that are attached to a continent and are called mainland. Islands have been homes to different cultures throughout our history. Separated from mainland, and relatively isolated, some islands of the oceans still carry the older cultures and _____(22)____ of humans. Islands also preserve animals and plants, in rather _______(23)______ conditions. In fact, it was through his visit to the Galapagos Islands, and through observing the animals there, that Charles Darwin came to _____(24)_____ the theory of evolution of man.

  1. diagnose

  2. propose

  3. discard

  4. highlight
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Charles Darwin came to propose or offer the theory of evolution of man.

Multiple choice

Which of these fits gap 22?

Directions: Complete this passage by selecting the most suitable option for the corresponding gap.

Islands are bodies or pieces of land that are completely ______(21)_____ by water, and are cut off from larger bodies of land that are attached to a continent and are called mainland. Islands have been homes to different cultures throughout our history. Separated from mainland, and relatively isolated, some islands of the oceans still carry the older cultures and _____(22)____ of humans. Islands also preserve animals and plants, in rather _______(23)______ conditions. In fact, it was through his visit to the Galapagos Islands, and through observing the animals there, that Charles Darwin came to _____(24)_____ the theory of evolution of man.

  1. traditions

  2. remains

  3. lifestyle

  4. practitioners
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The most suitable word that would go with culture is traditions.

Multiple choice

Identify the types of natural selection marked as A, B and C in the diagram.

  1. A - stabilising selection, B - directional selection and C - disruptive selection

  2. A - stabilising selection, B - disruptive selection and C - directional selection

  3. A - directional selection, B - stabilising selection and C - disruptive selection

  4. A - directional selection, B - disruptive selection and C - stabilising selection

  5. A - disruptive selection, B - directional selection and C - stabilising selection
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In the diagram, A is directional selection, B is a disruptive selection and C is a stabilising selection. Therefore, the given option is correct.

Multiple choice writing a paragraph writing english

Much of our knowledge of dinosaurs comes from excavated bones, which, in --- other clues such as fossilized tracks and eggs, help us to ---- the evolution of these creatures. 

  1. Convergence with .. supplant

  2. Divergence from .. decode

  3. Dependence on .. belie

  4. Opposition to .. amplify

  5. Conjunction with .. trace
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Option E is correct option because in English we know that conjunction means the figure of speech which joins two sentence and in this sentence two sentences are joining;

First the subjective part that is knowledge from excavated bones the word which joins the following part that is clues such as fossilized tracks and eggs.
And due to the search of eggs and fossilized tracks only one can trace  the reality of the dinosaurs.
Hence Option E is correct.

Multiple choice biology organization of life

Choose the correct answers from the alternatives given .
The maintenance of internal conditions of an organism within a certain boundary range is called

  1. evolution

  2. metabolism

  3. adaptation

  4. homeostasis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A. Evolution is a change in the inheritable characteristics of species over successive generations.

B. Metabolism is the sum total of all the chemical activities occurring in the body to sustain life.
C. Adaptation is the changes acquired by the body to sustain adverse conditions.
D. Homeostasis refers to the maintenance of a constant internal environment of the body. It is essential to maintain the living state of organisms as they can tolerate the change in internal conditions like temperature, pH etc. within a range. 
So the correct answer is 'Homeostasis'.