☰ خطة العام · العلوم (بالإنجليزية)

Practice for weather, life and soil

الأسبوع 29 · تقييم الوحدتين الثالثة والرابعة: تدريبات على الطقس والمناخ والتكيف والتربة · 3 دروس
2

Adaptation and genes: practice questions

Science P6: Term 2, Unit 4, pp. 87–89
GoalPractise questions on adaptation, migration, abiotic factors and inherited traits.
New words
herbivore · an animal that eats plantsstructural adaptation · a body feature that helps survivalinherited · passed from parents through genes
Explanation

Use the same plan: underline, predict, eliminate and give a reason. Remember the facts. The climate of a region tells you what kinds of living things can live there. A structural adaptation is part of the body, such as a polar bear’s thick fur and fat. A behavioural adaptation is an action, such as geese migrating to warmer places. Water, sunlight, air and temperature are abiotic factors. Baby rabbits look like their parents because genes pass from parents to offspring. Some plants discourage herbivores with sharp spines, a bitter taste or poison. Remember that a trait you learn or a scar you get is not inherited. Sorting each idea into a box in your head makes the answer easier to find.

IdeaExample
structural adaptationthick fur, spines, long legs
behavioural adaptationmigration, hiding by day
abiotic factorsunlight, water, air, temperature
inherited traiteye colour, leaf shape
Worked examples
Question: which is a behavioural adaptation, a camel’s long eyelashes or a lizard hiding under a rock at noon? The lizard hiding, because it is something the lizard does.
StatementReason
calf has mother’s horn shapegenes (inherited)
a scar on the mothernot inherited
Question: a gazelle calf has the same horn shape as its mother. Why? Genes passed from the parents. It is an inherited trait.
Question: which one is NOT abiotic: rain, a mushroom or rock? The mushroom is a living thing, so it is biotic.
Class activity

Sort game. With a grown-up, write 12 cards: six adaptations (three structural, three behavioural), three abiotic factors and three biotic factors. Shuffle and sort them into four groups, saying a reason for each card.

Practice
1
Which plant trait would NOT stop a goat eating it: sharp spines, bitter sap, soft sweet leaves or poison?
2
A camel’s long eyelashes keep out sand. Structural or behavioural?
3
Name two abiotic factors for a desert plant.
4
Why are migrating birds’ journeys hard? Give one reason.