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 biology biodiversity and classification animal classification and its benefits criteria for new system of classification five kingdoms of living organisms

Which of the following is related to the heterotroph hypothesis?

  1. Anaerobic and aerobic organisms evolved simultaneously

  2. Photosynthetic autotrophs evolved first since they required only energy from the sun and simple molecules from the environment

  3. Autotrophs evolved before a carbon source was made available

  4. Anaerobic heterotrophs evolved first

  5. Chemosynthesis was critical to the evolution of heterotrophic organisms
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Heterotrophs are organisms that obtain their food from other organisms as they cannot produce their own food. In food chains, they are usually secondary or tertiary consumers. The heterotroph hypothesis states that the first living organism was a heterotroph. It also assumed that the anaerobic heterotrophs evolved first.

So, the correct answer is 'Anaerobic heterotrophs evolved first'.

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

Among the following choose the properties shown by the living organism exclusively.


I. Growth
II. Increase in mass
III. Self-replication ability
IV. Response to touch stimuli

  1. I and II

  2. I, II and III

  3. III and IV

  4. I, II, III and IV
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
self replicating ability, also known reproduction and responding to or reacting to changes in the internal or external environment is called responsiveness to stimulus are both properties exclusive to living organisms
So, the correct answer is 'III and IV'
Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

A dead organism does not grow. Although, some non-living things can increase in size e.g. mountains, stones. The process is called ______

  1. accretion

  2. accumulation

  3. adaptation

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

  • Non-living things increase in size due to the addition of similar materials to their outer surface, they include crystals, glaciers, stones and mountains

So, the correct answer is 'accretion'

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

A living organism is unexceptionally differentiated from a non-living structure on the basis of

  1. Reproduction

  2. Growth and movement

  3. Interaction with environment

  4. Responsiveness
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
All organisms, from primitive prokaryotes to most advanced and complex eukaryotes, are able to sense and respond to environmental factors. The stimuli are perceived by sense organs in higher animals through sensory receptors in the eyes, ears, nose etc. Plants do not possess such sense organs. However, they do respond to external factors such as light, water, temperature, pollutants, other organisms, etc. Human beings have an additional facility of self consciousness (awareness of self). Consciousness and response to stimuli are said to be defining properties of living organisms.
So the correct option is D.
Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

Read the following statements and select the correct ones.


(i) An increase in mass is a characteristic of living organisms
(ii) Metabolic reactions can be demonstrated outside the body in isolated cell-free systems.
(iii) 'Response to stimuli' is a defining property of living organisms.

  1. (i) and (ii)

  2. (ii) and (iii)

  3. (i) and (iii)

  4. (i), (ii) and (iii)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

(i) Increase in mass and increase in number of individuals are twin characteristics of growth is true
(ii) Metabolic reactions can be demonstrated outside the body in isolated cell-free systems is true
(iii) 'Response to stimuli' is a defining property of living organisms is true

So, the correct option is '(i), (ii) and (iii)'.

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

All living organisms are linked to one another because.

  1. They have common genetic material of the same type

  2. They share common genetic material but to varying degrees

  3. All have common cellular organisation

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All organisms share common genetic material, i.e., DNA and RNA. However, it can vary to certain degrees.

Multiple choice zoology living and non living characteristics of life attributes of living organisms signs of life biology : an introduction living world and classification

A living organism can be unexceptionally differentained from a non-living thing on the basis of its ability for....

  1. Reproduction

  2. Growth and movement

  3. Responsiveness to touch

  4. Interaction with environment and progressive evolution
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Reproduction can or cannot be criteria because the childless couple is there who are living. evolution need not always be progressive. Growth is also shown in a deposition if materials and movement are exhibited by nonliving things.
So, the correct option is 'Responsiveness to touch'.
Multiple choice zoology biology : an introduction characteristics of life living world and classification attributes of living organisms

Which of the following is a defining characteristic of living organisms?

  1. Growth

  2. Ability to make sound

  3. Reproduction

  4. Response to external stimuli
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In physiology, a stimulus is a perceptible change in the interior or outside condition. The capacity of a living being or organ to react to outside upgrades is called affectability. 

So, the correct option is 'Response to external stimuli'.

Multiple choice biology the age of adolescence menstruation in females changes at puberty what happens if an egg is not fertilized?

Sexual dimorphism is based on

  1. Skeletal structure

  2. Evolution

  3. Genetic material

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sexual dimorphism is the changes that are observed in two sexes of the same organism. In humans, the male and the female can be distinguished on the basis of many characters. The main property which is used for the distinction in the males and females is the presence of XX and XY set of chromosomes. The chromosomes contain the genes which are responsible for the expression of the characters. So, the sexual dimorphism is based on the genetic material. 

Thus, the correct answer is option C. 

Multiple choice general knowledge the soil soil erosion (geo) soil erosion, soil conservation and uses of soil soil erosion and conservation

Which among the following within processes helps in evolution?
1. Natural selection
2. Adaptation
3. Mutation
4. Reproductive isolation

  1. 1, 2 and 3

  2. 2, 3 and 4

  3. 2 and 3

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Natural selection, adaptation, mutation, and reproductive isolation are all fundamental mechanisms that drive the process of biological evolution. Each plays a distinct role in how populations change over time.

Multiple choice biology selection and evolution ethology animal behaviour natural selection

The idea of natural selection as the fundamental process of evolutionary changes was reached by:

  1. Charles Darwin and Alfred Russel Wallace in 1900

  2. Charles Darwin in 1866

  3. Alfred Russel Wallace in 1901

  4. Charles Darwin and Alfred Russel Wallace in 1859
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Charles Darwin and Alfred Russel Wallace independently formulated the theory of natural selection, which was presented to the Linnean Society in 1858 and published in Darwin's 'On the Origin of Species' in 1859.

Multiple choice biology selection and evolution ethology animal behaviour natural selection

Natural selection means _________________.

  1. Nature selects desirable characters

  2. Nature rejects undesirable characters

  3. Nature reacts with an organism

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

Natural selection is the process where individuals with traits better suited to their environment are more likely to survive and reproduce, effectively selecting for desirable characters.