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Animal Life - Adaptations in animals (Habitat, Food habits, Protection)

Grade 5ICSE

Review the key concepts, formulae, and examples before starting your quiz.

🔑Concepts

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Adaptation is the process by which animals develop specific features or habits to survive in their specific environments (habitats).

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Terrestrial Adaptations: Animals living on land show various traits. Desert animals (e.g., camels) have long eyelashes and humps to store fat. Polar animals (e.g., polar bears) have thick fur and a layer of fat called blubber to withstand temperatures below 0∘C0^{\circ}C.

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Aquatic Adaptations: Fish use gills to breathe dissolved O2O_2 from water and fins for movement. Mammals like whales and dolphins use lungs and must come to the surface to breathe O2O_2.

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Amphibian Adaptations: Animals like frogs live both on land and in water. They breathe through lungs on land and through their moist skin in H2OH_2O.

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Feeding Habits: Herbivores (e.g., cows) have sharp incisors for cutting plants; Carnivores (e.g., lions) have sharp canines for tearing flesh; Omnivores (e.g., humans, bears) eat both plants and animals.

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Parasites: These are organisms like mosquitoes or leeches that live on or inside the body of a 'host' to obtain nutrition.

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Camouflage: A protective adaptation where animals blend with their surroundings to hide from predators (e.g., chameleons, stick insects).

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Migration and Hibernation: Migration is the mass movement of animals to avoid harsh winters (e.g., Siberian Crane). Hibernation is a deep 'winter sleep' to conserve energy when food is scarce.

📐Formulae

C6H12O6+6O2→6CO2+6H2O+Energy (Respiration process)C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + \text{Energy (Respiration process)}

Body Density<Water Density→Easier Floating/Buoyancy\text{Body Density} < \text{Water Density} \rightarrow \text{Easier Floating/Buoyancy}

O2 (Oxygen for breathing)O_2 \text{ (Oxygen for breathing)}

CO2 (Carbon Dioxide exhaled)CO_2 \text{ (Carbon Dioxide exhaled)}

💡Examples

Problem 1:

Why does a Camel have padded feet and a hump?

Solution:

The padded feet allow the camel to walk on hot sand without sinking or getting burnt. The hump stores fat (not water directly) which can be broken down into energy and H2OH_2O when food is scarce.

Explanation:

These are structural adaptations for a desert habitat where temperatures are high and resources are limited.

Problem 2:

Differentiate between Hibernation and Aestivation.

Solution:

Hibernation is 'winter sleep' (e.g., Polar bears, Frogs in cold climates), whereas Aestivation is 'summer sleep' to avoid heat and desiccation (e.g., Lungfish, some snails).

Explanation:

Both are behavioral adaptations to survive extreme temperatures where metabolic rates are lowered.

Problem 3:

How do fish utilize the O2O_2 present in their environment?

Solution:

Fish gulp water through their mouths and pass it over their gills. The gills extract the dissolved O2O_2 from the H2OH_2O and release CO2CO_2 back into the water.

Explanation:

This is a physiological adaptation for respiration in an aquatic habitat.