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 of the way in which evolution occurs?

  1. God determines which species should evolve.

  2. Adaptations enable one 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

Darwin stated that adaptations enable one species to produce more offspring by natural selection. 

Multiple choice

Which of the following forms the basic concepts in the theory of evolution by natural selection?

  1. Inheritance of acquired character

  2. Change in germplasm brings about evolution

  3. Modifications in organs through use and disuse

  4. Prodigality of reproduction, struggle for existence and survival of the fittest

  5. Appearance of sudden large variations, their inheritance and survival of those having these variations
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Prodigality of reproduction, struggle for existence and survival of the fittest are the basic concepts of Darwin's theory of natural selection.

Multiple choice

Directions: In the following question, four statements are provided between an opening statement 1 and a closing statement 6. The four statements are jumbled up and form a coherent paragraph when properly arranged. Select the alternative representing the proper and logical sequencing of these six statements.

1 Darwin himself was a liberal but his theories had consequences in some degree inimical to traditional liberalism.

A. If, as Lamarck held, acquired characteristic were inherited, the opposition to Helvetius's views would be softened.

B. The doctrine that all men are equal and education was responsible for difference in opinion was incompatible with his theory of congenital differences.

C. And these differences arose between members of same species.

D. Apart from certain exception, it has appeared that only congenital characteristics are inherited.

6 Thus, congenital differences between men acquire fundamental importance.

  1. ABDC

  2. BCAD

  3. CDAB

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

Sentence 1 describes the contradiction theories of Darwin and traditional liberalism. So, following sentence should be in same essence as given in first sentence. Only sentence B goes with the flow of first sentence because rest of the sentence discusses ideas which haven't been explained in sentence 1. Thus, BCAD is the correct option.

Multiple choice

Match the evolutionary biologists in Group I with their respective theory in Group II.

 
Group I
Gropu II
P. August Weisman 1. Neutral theory of molecular evolution
Q. Jean-Baptiste Lamark 2. Handicap principle
R. Amotz Zahavi 3. Theory of inheritance of acquired characteristics
S. Motoo Kimura 4. Germ plasm theory

  1. P - 1; Q - 2; R - 3; S - 4

  2. P - 2; Q - 1; R - 3; S - 4

  3. P - 3; Q - 2; R - 4; S - 1

  4. P - 4; Q - 2; R - 1; S - 3

  5. P - 4; Q - 3; R - 2; S - 1
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Germplasm theory was given by August Weisman. Neutral theory of molecular evolution was given by Motoo Kimura. Handicap principle was given by Amotz Zahavi. Theory of inheritance of acquired characteristics was given by Jean-Baptiste Lamark.

Multiple choice

Directions: Choose the correct answer for the following question on the basis of the given passage:

It can be inferred that in his discussion of maladaptive frailties the author assumes that _________________.

RC Passage 5:

Some modern anthropologists hold that biological evolution has shaped not only human morphology but also human behavior. The role those anthropologists ascribe to evolution is not of dictating the details of human behavior but one of imposing constraints - ways of feeling, thinking, and acting that â€�come naturallyâ€� in archetypal situations in any culture. Our �frailties� - emotions and motivs such as rage, fear, greed, gluttony, joy, lust, love-may be a very mixed assortment quality we are, as we say, â€�in the gripâ€� of them. And thus they give us oursense of constraints.
Unhappily, some of those frailties our need for ever-increasing security among them are presently maladaptive. Yet beneath the overlay of cultural detail, they, too, are said to be biological in direction, and therefore as natural to us as are our appendixes. We would need to comprehend throughly their adaptive origins in order to understand how badly they guide us now. And we might then begin to resist their pressure.

  1. evolution does not favor the emergence of adaptive characteristics over the emergence of maladaptive ones

  2. any structure or behavior not positively adaptive is regarded as transitory in evolutionary theory

  3. maladaptive characteristics, once fixed, make the emergence of other maladaptive characteristics more likely

  4. the designation of a characteristic as being maladaptive must always remain highly tentative

  5. changes in the total human environment can outpace evolutionary change.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Yet beneath the overlay of cultural detail, they, too, are said to be biological in direction, and therefore as natural to us as are our appendixes. We would need to comprehend throughly their adaptive origins in order to understand how badly they guide us now.

Multiple choice

According to Darwin's theory of evolution, differences between species may be the result of

  1. mutagenic agents

  2. natural selection

  3. the disuse of body structures

  4. None of these

  5. NA
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Natural selection theory proposed by Darwin states that evolutionary change comes through the production of variation in each generation and differential survival of individuals with different combinations of these variable characters.

Multiple choice

Development of calf muscles in ladies who wear high heels is a common example of:

  1. Natural Selection

  2. inheritance of acquired character

  3. Use and disuse of organ

  4. Artificial selection

  5. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Development of calf muscles in ladies due to wearing of high heels are strictly disuse of the organs. Its not the natural disorder or by birth. These disorder are fully responsible for the ladies who wear the high heals.

Multiple choice

Aristotle classified organisms on the basis of similarity in their ________.

  1. mode of nutrition

  2. nature of cell

  3. habitat

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

Aristotle classified organisms primarily based on their habitat - whether they lived on land, in water, or in air. This was a simple classification system based on where organisms lived, rather than their internal characteristics like cellular structure or nutrition. Modern classification is based on multiple criteria including cellular organization and phylogeny.

Multiple choice

Darwin could not explain

  1. over production

  2. variations

  3. survival of the fittest

  4. struggle for existence
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Darwin observed and documented variations in organisms but could not explain their origin or source. He explained over-production, survival of the fittest, and struggle for existence as key mechanisms of natural selection. Variations were known to exist, but their genetic basis (mutations and recombination) was discovered later.

Multiple choice

Which of the following gave rise to the struggle for existence?

  1. High reproductive rate and limited resources

  2. Limited resources and inherited variations

  3. Natural selection and limited resources

  4. Natural selection and environmental changes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The struggle for existence arises because organisms produce more offspring than the environment can support (high reproductive rate) but resources like food and space are limited. This leads to competition. Natural selection and variations are consequences or mechanisms, not the root cause.

Multiple choice

The book “Origin of Species” was written by Darwin in

  1. 1530

  2. 1795

  3. 1859

  4. 1895
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Charles Darwin published 'On the Origin of Species' in 1859, presenting his theory of evolution by natural selection. This date is fundamental in biology history. 1530 is too early (pre-scientific revolution), 1795 and 1895 are incorrect.