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CBSE Notes 2011-2012 » Heredity and Evolution - Class 10 Biology MCQs (Free Practice Test)

Heredity and Evolution - Class 10 Biology MCQs (Free Practice Test)


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A select subset of questions has been made available here.
You can use this for preparation purpose.
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Question :

Human offspring's sex is determined


Answer :

through father's sex chromosomes.
through mother's sex chromosomes.
by hormones.
by enzymes.


Question :

How did people respond to Mendel's ideas on inherited
traits ?


Answer :

Immediately accepted by his peers.
Found to be out of date.
Thought to be far ahead of their time.
Not recognised for more than thirty years.


Question :

By studying analogous structures we look for


Answer :

similarities in organ structure
similarities in cell make-up
similarities in appearance and function but different in structure
similarities in appearance that differences in functions


Question :

Which of the following statement is incorrect ?


Answer :

For every hormone there is a gene.
For every protein there is a gene.
For production of every enzyme there is a gene.
For every molecule of fat there is a gene.


Question :

The branch of biology that deals with transmission of
characters from one generation to other is termed as


Answer :

evolution
genetics
heredity
biogenetic law


Question :

speciation takes place when variation occurs with


Answer :

death of an organism.
mood changes
geographical isolation.
changes due to accidents.


Question :

The sequence of events in geographic speciation is most
likely to be :


Answer :

Reproductive isolation
Geographic barrier
Genetic divergence
Genetic divergence


Question :

Which group of organisms is believed to be among the
earliest to evolve on Earth ?


Answer :

Protozoans
Reptiles
Arthropods
Coelenterates


Question :

Which prediction from the fossil record is in agreement
with the theory of evolution ?


Answer :

Unicellular organisms are first found in strata above multicellular fossils.
Land animals appear earlier than land plants in the fossil record.
Reptiles appear earlier ihan insects in the fossil record.
Prokaryote fossils appear earlier than eukaryote fossils.


Question :

One of the following is a correct statement:


Answer :

Dominant trait cannot be expressed in heterozygous condition.
Dominant trait is expressed in homozygous condition.
Recessive trait can only be expressed in homozygous condition
Recessive trait can always be expressed in heterozygous condition.