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20 Cards in this Set
- Front
- Back
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A likely reason why a species would become extinct after the major environmental change |
There are not enough members of the species born with a trait necessary to survive in the new environment |
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When a plant bends towards a light source it is displaying a |
Trop ism |
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What is the body system involved with sensing the environment and sending messages as electrical signals in response to stimuli |
The nervous system |
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A blank and blank are closely related on their physical structure |
Dolphin and whale |
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What is a situation that could lead to the extinction of a species |
Increased competition |
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An animal's heart rate does what when it hibernates |
Slows down |
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What would most likely improve the chances of the rodent species could survive |
Being able to eat plants that survive in a dry environment |
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What is an example of a plant responding to an internal stimulus |
An apple on a tree ripening |
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Homeostasis is |
The balance in an organism's internal environment |
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Animals are classified by |
Their physical characteristics |
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On the Galapagos Islands Charles Darwin observe that |
The finch population on each island was unique |
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What is an example of Extinction |
Every individual in a species of wolf is killed by hunters or lack of food |
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A hormone is |
a chemical message |
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The four parts of Darwin's theory of natural selection are |
Overproduction genetic variation selection and adaptation |
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When a fox chases a rabbit and the rabbit runs away this is an example of |
A flight or fight response |
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If prawns were wiped out of an ecosystem the organisms that would lose their food supply |
Small fish herons and Pelicans |
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In classifying an organism the most complete information comes from |
Analyst of genetic information and physical characteristics |
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Population is |
A group of organisms of the same species that live in a defined geographical area |
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What is an example of an animal responding to external stimulus |
A dog growing a winter coat |
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What is difference in the heritable traits of an individual from those of other individuals in the same species or population |
Variation |
