Quiz: Adaptation

Subject: Science | Year: 6

Questions (Student Sheet)

Name: _________________________ Class/Set: ____________ Date: ____________

Q1: Which of these is a physical adaptation that helps a polar bear survive in the Arctic?

a) ☐ Deep hibernation during the entire winter season. b) ☐ A thick layer of blubber under the skin for insulation. c) ☐ Changing its fur colour from brown to white every summer. d) ☐ Learning to build shelters out of blocks of ice.

Q2: Many desert animals, such as the fennec fox, are nocturnal. Why is this considered a behavioural adaptation?

a) ☐ Because it involves a physical change to the animal's large ears. b) ☐ Because it is an action the animal takes to avoid the heat of the day. c) ☐ Because it is a process that happens inside the animal's digestive system. d) ☐ Because the animal was born with the ability to see in the dark.

⇨ The table below provides data on four different species of birds discovered on an island.

Species	Beak Shape	Primary Food Source
Species A	Wide and flat	Floating pond weed
Species B	Long and thin	Nectar inside deep flowers
Species C	Short and hooked	Small mammals and fish
Species D	Fine and pointed	Insects inside tree bark

Q3: Based on the table, which species is best adapted to survive in an environment where the only available food is found deep inside narrow, tubular flowers?

a) ☐ Species A b) ☐ Species B c) ☐ Species C d) ☐ Species D

⇨ Read the following extract regarding the peppered moth population in England during the 19th century.

The peppered moth typically had light-coloured wings to blend in with lichen on trees. During the Industrial Revolution, many trees in cities became covered in dark soot from factories. Over several years, scientists noticed that the population of dark-coloured moths increased significantly in these urban areas, while the light-coloured moths were more easily seen and eaten by birds.

Q4: According to the extract, why did the dark-coloured moths have a survival advantage in the soot-covered woods?

a) ☐ The soot provided more nutrients for the dark moths to grow stronger. b) ☐ The dark moths learned to fly faster than the light moths to escape predators. c) ☐ The dark colour acted as camouflage, making them harder for predators to spot. d) ☐ The dark moths were naturally warmer because they absorbed more sunlight.

Q5: A cactus has spines instead of large, flat leaves. How does this specific adaptation help it survive in a habitat with very high temperatures and low rainfall?

a) ☐ The spines attract pollinators like bees more effectively than leaves. b) ☐ The spines protect the plant from being eaten by all desert animals. c) ☐ The spines have a small surface area to reduce water loss through transpiration. d) ☐ The spines allow the plant to absorb more carbon dioxide during the day.

Score: _______ / 5

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⚠ TEACHER KEY / MARKING SCHEME (DO NOT PRINT FOR STUDENTS)

💡 Answer Key & Explanations

Q1: b

Explanation: Blubber is a structural (physical) adaptation that provides essential insulation in freezing temperatures. Option A is incorrect because polar bears do not truly hibernate in the same way as brown bears; option C is incorrect as their fur remains white year-round; and option D is a human behaviour, not a biological adaptation.

Q2: b

Explanation: A behavioural adaptation is a way an organism acts to survive. Being nocturnal (active at night) allows desert animals to stay cool when the sun is down. Option A describes a structural adaptation (ears), and option C describes a physiological adaptation (internal processes).

Q3: b

Explanation: Species B has a long and thin beak. This specific shape is required to reach nectar at the bottom of tubular flowers. This question requires students to match the physical tool (beak) to the specific environmental challenge (food source location).

Q4: c

Explanation: This is a classic example of natural selection. Camouflage is an adaptation that increases the chance of survival by reducing predation. The soot changed the environment, making the dark trait more advantageous than the light trait.

Q5: c

Explanation: Large leaves lose a lot of water through tiny holes called stomata. In a desert, water is scarce. By having spines, the cactus reduces its surface area, which significantly cuts down the amount of water lost to the air (transpiration). While spines do provide protection (Option B), their primary evolutionary driver in xerophytes (desert plants) is water conservation.

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🎓 Pedagogical Pulse (Teacher Guidance)

• Model: Use the "Peppered Moth" scenario (Q4) to explain that individuals do not "decide" to change colour. Instead, those with the advantageous trait survive and pass it on to the next generation.
• Check for Misconceptions: Watch out: Many Year 6 students believe camels store water in their humps. Ensure you clarify that humps store fat, which can be broken down for energy and a small amount of metabolic water, but the hump itself is a fat store.
• Scaffolding: For the data interpretation task (Q3), encourage students to use a ruler to track across the rows of the table to ensure they don't misread the beak shape and food source pairings.
• Extension: Ask students to suggest what might happen to Species B if the deep flowers on the island were replaced by plants with flat, open flowers. This encourages "Greater Depth" thinking about the specificity of adaptations.