Evolution
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
The theory of spontaneous generation was finally dismissed by which of the following?
A.Demonstration that life comes from pre-existing life
B.Discovery of DNA
C.Miller's experiment
D.The Big Bang theory
- 2.
What is the primary conclusion of the Miller-Urey experiment?
A.Life can be created in a lab
B.Organic molecules can be formed from inorganic precursors
C.Oxygen is necessary for life
D.DNA is the first genetic material
- 3.
According to Oparin, which was the first step toward the origin of life?
A.Formation of DNA
B.Formation of proteins
C.Formation of coacervates
D.Formation of organic compounds
Download the worksheet for Evolution - Origin of Life to practice offline. It includes additional chapter-level practice questions.
Evidence for Biological Evolution
SubtopicEvidence for Biological Evolution under Evolution for Grade 12 CBSE.
Preview questions (no answers)
- 1.
Which of the following describes the relationship between the structure of a bird wing and a grasshopper wing?
A.Homologous and showing divergent evolution
B.Analogous and showing convergent evolution
C.Homologous and showing convergent evolution
D.Analogous and showing divergent evolution
- 2.
The fossil record helps us understand the evolutionary history of an organism. Which organism's evolution is very well documented through fossils?
A.Dog
B.Horse
C.Human
D.Elephant
- 3.
Placental wolf and Tasmanian wolf (a marsupial) are examples of:
A.Divergent evolution
B.Convergent evolution
C.Homology
D.Atavism
Download the worksheet for Evolution - Evidence for Biological Evolution to practice offline. It includes additional chapter-level practice questions.
Darwinian Theory and Modern Synthetic Theory
SubtopicDarwinian Theory and Modern Synthetic Theory under Evolution for Grade 12 CBSE.
Preview questions (no answers)
- 1.
A group of individuals of the same species occupying a particular geographic area at a given time is called a:
A.Community
B.Population
C.Ecosystem
D.Biome
- 2.
Darwin’s theory of evolution focuses on the 'Struggle for Existence' primarily because:
A.Nature has unlimited resources
B.Populations grow faster than the food supply
C.Organisms do not want to reproduce
D.There is no variation in nature
- 3.
Which of these is a source of genetic variation in the Modern Synthetic Theory during gamete formation?
A.Mitosis
B.Crossing over in meiosis
C.Regeneration
D.Binary fission
Download the worksheet for Evolution - Darwinian Theory and Modern Synthetic Theory to practice offline. It includes additional chapter-level practice questions.
Mechanism of Evolution (Variation and Mutation)
SubtopicMechanism of Evolution (Variation and Mutation) under Evolution for Grade 12 CBSE.
Preview questions (no answers)
- 1.
Which of the following is NOT a mechanism leading to evolutionary change?
A.Natural Selection
B.Genetic Drift
C.Stable population size
D.Mutation
- 2.
The concept of 'survival of the fittest' refers to the survival of individuals with:
A.Maximum physical strength
B.Beneficial variations
C.Smallest body size
D.No mutations
- 3.
A sudden change in genetic material that is inherited is called:
A.Adaptation
B.Mutation
C.Selection
D.Variation
Download the worksheet for Evolution - Mechanism of Evolution (Variation and Mutation) to practice offline. It includes additional chapter-level practice questions.
Hardy-Weinberg Principle
SubtopicHardy-Weinberg Principle under Evolution for Grade 12 CBSE.
Preview questions (no answers)
- 1.
Which of the following is the correct relationship between and for a gene with two alleles?
A.B.C.D. - 2.
The Hardy-Weinberg principle is named after a British mathematician and a German:
A.Physicist
B.Physician
C.Botanist
D.Geologist
- 3.
Disturbance in genetic equilibrium, or Hardy-Weinberg equilibrium, is interpreted as:
A.Genetic stability
B.Evolutionary change
C.Reproductive isolation
D.Environmental stasis
Download the worksheet for Evolution - Hardy-Weinberg Principle to practice offline. It includes additional chapter-level practice questions.
Adaptive Radiation
SubtopicAdaptive Radiation under Evolution for Grade 12 CBSE.
Preview questions (no answers)
- 1.
Adaptive radiation results in several species emerging from a:
A.Common ancestor
B.Different ancestor
C.Synthetic organism
D.Non-living matter
- 2.
Which placental mammal corresponds to the marsupial 'Flying phalanger'?
A.Flying squirrel
B.Bat
C.Mouse
D.Wolf
- 3.
The variation in finch beaks allowed them to consume:
A.Only seeds
B.Only insects
C.A variety of food items like seeds, insects, and fruits
D.Only nectar
Download the worksheet for Evolution - Adaptive Radiation to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
Modern human evolution is often described as 'cultural evolution' because:
A.It involves language, tools, and social structures
B.It only happens in laboratory cultures
C.It is faster than biological evolution
D.It involves only the skin color change
- 2.
Which of the following is NOT a characteristic of evolution?
A.Development of lumbar curve
B.Opposable thumb
C.Increase in the length of the tail
D.Expansion of the pelvic girdle
- 3.
The cave paintings at Bhimbetka rock shelter in India were made by:
A.Pre-historic humans
B.Modern industrialists
C.Medieval kings
D.Harappan settlers
Download the worksheet for Evolution - Human Evolution to practice offline. It includes additional chapter-level practice questions.