EASY
12th ICSE
IMPORTANT
Earn 100

When we say ‘survival of the fittest’, does it mean that those that survive are called fit? Comment.

Important Questions on Evolution

EASY
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 7 - Evolution>Chapter Practice>Q 30

How do new species arise according to de Vries mutation theory of organic evolution?

MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 7 - Evolution>Chapter Practice>Q 31

Have you heard of the modern synthetic theory of evolution? What are the drawbacks of mutation theory that could lead to the formation of a new theory?

EASY
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 7 - Evolution>Chapter Practice>Q 32
What are the causes of variation?
MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 7 - Evolution>Chapter Practice>Q 33
What is DDT? Describe the impact of DDT on the population of insects.
EASY
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 7 - Evolution>Chapter Practice>Q 34
Disruptive selection is the rarest form of selection. Give reason.
EASY
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 7 - Evolution>Chapter Practice>Q 35
Mention the names of three groups of plants for which Psilophyton is the ancestor.
MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 7 - Evolution>Chapter Practice>Q 36
Give a brief account of the origin of Earth.
MEDIUM
12th ICSE
IMPORTANT
ISC Biology Class XII>Chapter 7 - Evolution>Chapter Practice>Q 37
How did Louis Pasteur successfully demolish the popular theory of spontaneous generation?