Evolution
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Differentiate acquired and inherited traits and explain speciation
SubtopicDifferentiate acquired and inherited traits and explain speciation under Evolution for Grade 10 CBSE.
Preview questions (no answers)
- 1.
Who is known as the Father of Genetics?
A.Charles Darwin
B.Gregor Mendel
C.Lamarck
D.Watson
- 2.
Reproductive isolation is a key step in:
A.Growth
B.Acquiring traits
C.Speciation
D.Regeneration
- 3.
Which of the following can cause a change in DNA?
A.Mutations
B.Eating more food
C.Reading a book
D.Walking daily
- 4.
The concept that 'like begets like' refers to:
A.Speciation
B.Acquired traits
C.Heredity
D.Environmental changes
- 5.
An evolutionary biologist studies a population and observes two types of changes as illustrated in the flowchart. Which change is capable of driving the process of speciation over many generations and why?
A.Change 2, because acquired traits allow an organism to adapt to its surroundings immediately, leading to a new species.
B.Change 1, because only inherited variations in the DNA of germ cells can accumulate in a population over time to form a new species.
C.Both Change 1 and Change 2, because any change in an organism's physical appearance eventually leads to reproductive isolation.
D.Change 1, because it is an acquired trait that is passed on to the offspring through the development of somatic cells.
- 6.
If the DNA of a zygote is altered, the resulting trait will be:
A.Acquired
B.Inherited
C.Non-heritable
D.Temporary
- 7.
Which of the following scientists' work focused on the inheritance of traits (though not speciation directly)?
A.Gregor Mendel
B.Isaac Newton
C.Robert Hooke
D.Anton van Leeuwenhoek
- 8.
Which of the following statements about speciation is correct?
A.Speciation can occur when two populations are so genetically different they can no longer interbreed.
B.Speciation is a very fast process that happens in a single generation.
C.Speciation only occurs when a species is about to go extinct.
D.Speciation is caused by individuals wanting to become a new species.
- 9.
In the context of evolution, 'fitness' refers to:
A.The ability of an individual to survive and pass its genes to the next generation.
B.The physical strength and muscle mass of an individual.
C.The amount of food an individual can consume in its lifetime.
D.The speed at which an individual can run away from predators.
- 10.
Which of the following is NOT a mechanism that leads to speciation?
A.Acquiring a new skill like swimming through constant practice.
B.Genetic drift in a small sub-population.
C.Natural selection acting on inherited variations.
D.Geographic isolation of two populations.
Download the worksheet for Evolution - Differentiate acquired and inherited traits and explain speciation to practice offline. It includes additional chapter-level practice questions.
Interpret fossil evidence, classification, and stages of evolution including human evolution
SubtopicInterpret fossil evidence, classification, and stages of evolution including human evolution under Evolution for Grade 10 CBSE.
Preview questions (no answers)
- 1.
The rudimentary eye in Planaria is called a:
A.Blind spot
B.Eyespot
C.Lens
D.Retina
- 2.
Which scientist proposed that acquired traits are inherited? (Note: This theory was later disproven).
A.Darwin
B.Lamarck
C.Mendel
D.Watson
- 3.
What is the common term for the variety of life on Earth?
A.Ecology
B.Biodiversity
C.Biotechnology
D.Bioinformatics
- 4.
Variation in a species is important because it:
A.Causes death
B.Ensures survival over time
C.Stops evolution
D.Makes all organisms look identical
- 5.
If two species 'X' and 'Y' share more characteristics with each other than with species 'Z', it indicates:
A.X and Y are more closely related to each other than to Z
B.Z is the ancestor of X and Y
C.X, Y, and Z have no common ancestor
D.Y and Z are more closely related than X and Y
- 6.
Fossil evidence of 'Rajasaurus' found in India belongs to which group of animals?
A.Mammals
B.Birds
C.Dinosaurs
D.Amphibians
- 7.
Which of the following is TRUE about human migration out of Africa?
A.Humans migrated in a single straight line to America
B.Some groups stayed back in Africa while others migrated to different parts of the world
C.Migration only happened after the invention of boats
D.Human migration was a planned event for conquest
- 8.
Which part of the human genome is most commonly used by scientists to trace maternal lineage over thousands of years?
A.The Y-chromosome
B.Mitochondrial DNA (mtDNA)
C.Autosomal chromosomes
D.Ribosomal RNA
- 9.
In the context of the CBSE curriculum, why is it said that 'Evolution is simply the generation of diversity and the shaping of diversity by environmental selection'?
A.To emphasize that there is no 'progressive' goal toward perfection in nature.
B.To show that environment is the only factor in evolution, not DNA.
C.To prove that all diversity is created by human interference.
D.To suggest that evolution and classification are unrelated fields.
- 10.
What does the term 'Phylogeny' refer to?
A.The study of the functions of organs in an individual.
B.The evolutionary history and relationship of a group of organisms.
C.The process of naming new species using binomial nomenclature.
D.The study of how fossils are formed in sedimentary rock.
Download the worksheet for Evolution - Interpret fossil evidence, classification, and stages of evolution including human evolution to practice offline. It includes additional chapter-level practice questions.