7th Grade > Biology
WEATHER CLIMATE AND ADAPTATIONS OF ANIMALS TO CLIMATE MCQs
Total Questions : 118
| Page 8 of 12 pages
Answer: Option A. ->
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Each point : 1 Mark
1. Polar bears have white fur so that they are not easily visible in the snowy white background. It protects them from their predators. It also helps them in catching their prey.
2. To protect them from extreme cold, they have two thick layers of fur. They also have a layer of fat under their skin.
3. Its paws are wide and large, which help it not only to swim well but also walk with ease in the snow.
4. It has a strong sense of smell so that it can catch its prey for food.
5. It has long, curved and sharp claws which help it to walk on ice.
Answer: Option A. ->
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Each point: 1 Mark
Tropical rain forests have a large population of animals because:
1. The tropical rain forests have favourable climatic conditions for animals.
2. The tropical rain forest has plenty of different types of easily available food.
3. The canopy offers shelter and hiding places, providing for interaction between different species.
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Each point: 1 Mark
Tropical rain forests have a large population of animals because:
1. The tropical rain forests have favourable climatic conditions for animals.
2. The tropical rain forest has plenty of different types of easily available food.
3. The canopy offers shelter and hiding places, providing for interaction between different species.
Answer: Option A. ->
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Each point: 1 Mark
1. They use their trunk as nose because of which they have a strong sense of smell. The trunk is also used for picking up food.
2. Large ears help them in hearing even very soft sounds. They also help the elephant to keep cool in the hot and humid climate of the rainforest.
3. They have thick padded feet which help them in moving silently.
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Each point: 1 Mark
1. They use their trunk as nose because of which they have a strong sense of smell. The trunk is also used for picking up food.
2. Large ears help them in hearing even very soft sounds. They also help the elephant to keep cool in the hot and humid climate of the rainforest.
3. They have thick padded feet which help them in moving silently.
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Each point: 1 Mark
1. Meteorologists record the weather every day.
2. These records help us to determine the weather pattern at a place.
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The two regions of the Earth with extreme climatic conditions are the polar regions and the desert. Deserts have extreme hot climate and polar regions have extreme cold climate.
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The two regions of the Earth with extreme climatic conditions are the polar regions and the desert. Deserts have extreme hot climate and polar regions have extreme cold climate.
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Definition: 2 Marks
Climate is the composite or generally prevailing weather conditions of a region, such as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. Climate of a place remains same for a long period of time, hence it does not change frequently.
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Definition: 1 Mark
Importance: 1 Mark
Examples: 1 Mark
Camouflage is an adaptation that allows animals to change colour so as to allow them to blend in with their surroundings. The predators can hide and hunt and also the prey can hide from their predators.
Examples: For example, the lion is almost the same colour as dried grass. So, it can stay hidden and hunt its prey.
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Each point: 1 Mark
1. Higher temperatures cause air near the equator to expand and rise, creating a low pressure area.
2. Similarly, pressure differences between warm and cold air cause air to flow from a higher pressure region to a lower pressure region.
3. Pressure differences lead to the production of strong winds.
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Definition: 1 Mark
Instrument: 1 Mark
Humidity is a measure of the moisture in air.
Hygrometer is the instrument used to measure humidity.
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Each point: 1 Mark
(a) Weather is the daily fluctuation in temperature, humidity, etc., while climate is the average weather pattern of a place.
(b) Humidity indicates the wetness of a place due to the amount of moisture in the atmosphere while rainfall is the drops of water that fall from clouds on the ground.
(c) Polar region remains very cold for most part of the year whereas tropical rainforest has a hot and humid climate.
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