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Worksheets8.3.5 Natural Selection Practice 2
Total questions: 11
Worksheet time: 9mins
Organisms are not dependent on the abiotic (non-living) factors in the environment.
True
False
Organisms change over time to meet the demands of the environment in which they live.
True
False
Humans are responsible for the way organisms adapt to the environment.
True
False
Selection is when an organism chooses something based on it's needs in the environment.
True
False
If an environment changes, the organisms in it can just adapt.
True
False
Adaptations happen because successful traits are passed from generation to generation.
True
False
Natural means to occur in nature or without human intervention.
True
False
What are the THREE conditions needed for natural selection to occur? SELECT THREE ANSWERS.
There must be variation in characteristics.
There must be no differences between organisms in a population.
There must be a difference in fitness (ability to reproduce).
The trait that affects fitness must be inheritable (passed on to other generations).
What is natural selection?
Organisms with favorable (better) traits will reproduce and survive.
Organisms within a population all have the same chances of survival.
All organisms in a species have the exact same traits.
Organisms in a population will all eventually disappear.
What is a trait?
Only a physical difference between organisms of the same species.
A skill that can only be learned through practice.
When an organism changes over time.
A characteristic of an organism.
These snails are in the same population, but look different. These differences are called...
appearances
variations
traits
natural selection
