GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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an adaptation
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environment
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response
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stimulus
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Detailed explanation-1: -This is ‘natural selection’. Consider the giraffe, for example. A Darwinian theory of evolution posits that it was through random variation that some giraffes had longer necks than others. Thanks to their long necks, they were able to reach leaves high up in the trees in their environment.
Detailed explanation-2: -Structural adaptations A famous example of a structural adaptation is a giraffe’s long neck. The giraffe has evolved its impressive neck so it can eat leaves from the tallest trees.
Detailed explanation-3: -How are their long necks adapted to their lifestyle? Their long necks allow them to feed among treetops and spot predators. What is special about a giraffe’s heart? Giraffes have an extra-large heart to pump blood up their long necks to the brain.
Detailed explanation-4: -Giraffes have a long neck that helps them reach their favorite food and look out for predators. They also have a dark, thick prehensile tongue, meaning it can twist and wrap around, and grab things. Its dark color protects it from the sun and its tough texture protects it from sharp thorns.