Welcome to cbsenotes.com! To post messages or access any member only section, you will need an account. Create your free account now.
Already a member ? Click here to login
CBSE Notes 2011-2012 » Heredity and Evolution - Class 10 Biology MCQs (Free Practice Test)

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


************************************************
A select subset of questions has been made available here.
You can use this for preparation purpose.
Once you are ready, click on 'Take Quiz' to start the QUIZ.
***********************************************

Question :

Some types of variation are due to changes in the genetic
material. What is this type of change called ?


Answer :

Mutation
Sterilisation
Fertilisation
Radiation


Question :

Study of fossils is known as


Answer :

Paleobotany
Anatomy
Palaeontology
Ornithology


Question :

Which of the following is an example of genetic variation ?


Answer :

One person has a scar, but his friend does not.
One person is older than another.
Reeta eats meat, but her sister Geeta is a vegetarian.
Two children have different eye colours.


Question :

The difference between Homologous and Analogous organs
is that


Answer :

Homologous organs have same design and function whereas analogous organs have different design and function.
Homologous organs have different design and functions whereas analogous organs have same design and functions.
Homologous organs have same design but different functions whereas analogous organs have different design but similar functions.
Homologous organs have different design but similar functions whereas analogous organs have same design but different functions.


Question :

Answer :



Question :

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


Answer :

Protozoans
Reptiles
Arthropods
Coelenterates


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 :

speciation takes place when variation occurs with


Answer :

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


Question :

A : Equal distribution of genes occurs because these genes
are located on pairs of homologous chromosomes.
B : Acquired variations in somatic traits are not passed
from generation to generation.


Answer :

Both 'A' and 'B' are true statements.
Both 'A' and 'B' are false statements.
A' is true while 'B' is false.
A' is false while 'B' is true.


Question :

The link between organisms that show branching pattern
of evolutionary relationship are shown by


Answer :

two fossil layers
phylogenetic tree
comparative embryology
living fossils