Olympiad Test: The Living Organisms - Characteristics & Habitats - Class 6 MCQ

Animals have their own special characteristics to protect themselves from enemies and from danger. Chameleon protect itself from enemies by changing the colour of the body.

The figure represents the interdependence between plants and animals. Animals depend on plants for food and oxygen. Plants depend on animals for carbon dioxide.

Trees found on the mountain are normally cone shaped and have sloping branches. The leaves of some of these trees are needle-like. This helps the rainwater and snow to slide off easily.

Basic needs required for a plant to grow are air, water and sunlight. It prepares its food in the presence of sunlight. Its shoot system or stem respond to light and bends towards the direction of sunlight.

3. All of these

Explanation: The living environment is made up of various essential components such as water, trees, and the sun, all of which are crucial for life. Water is vital for hydration and biological processes, trees provide oxygen and habitats, and the sun is the primary source of energy for all living organisms through processes like photosynthesis. Therefore, all of these components play a major role in the living environment.

• Mangroves Thrive in marshy coastal areas, adapting to saltwater.
• Coconut: Prefer hot, humid climates, often found on sandy beaches.
• Cactus: Incorrectly matched; they actually thrive in dry, arid environments like deserts, not wet areas.
• Mango: Grows well in warm plains with ample sunlight.

Adjusting to environment is called an adaptation.

Thin skin and scales are the features not suited for tropical regions.

The white fur helps the polar bear to conserve heat and white surfaces are poor radiators of heat. Fat stored under its skin provides insulation against heat loss thus helping the animal to survive in the extreme cold conditions in the arctic region.

They have thick skin or fur to protect them from cold. For example, yaks have long hair to keep them warm

Camel is called the' ship of the desert'. It is used for transportation. It stores reserve food in the form of fat in its hump for future use. A camel's hump does not hold water at all – it actually stores fat.

The scales enable it by wriggling its body to gain a grip on moist surfaces.

The environment consists of both living organisms (plants and animals) and non-living substances (abiotic components).

Terrestrial ecosystem includes those organisms which live on land. It is classified into three types ? Forest ecosystem. Grassland ecosystem and Desert ecosystem.

A car moves by the combustion of fuel and thereby it gets energy.

1. Camel - Desert: Camels are well adapted to live in desert environments. They can survive with little water and have thick fur that helps insulate them from the heat.

2. Germs - Air: Germs, or microorganisms, can be found in the air, especially in dust and aerosols. They can spread diseases through the air, making this pairing correct.

3. Polar bear - Snow: Polar bears are native to Arctic regions, where there is a lot of snow and ice. They are excellent swimmers and primarily hunt seals on the sea ice, making this pairing accurate.

4. Whale - River: This pairing is incorrect because whales are marine animals that live in oceans. While some smaller species, like dolphins, can enter rivers, true whales do not typically inhabit freshwater rivers.

In summary, the pair "Whale - River" does not represent a correct association since whales are found in saltwater environments, not in rivers.

All non-living things such as soil, water, sunlight, temperature etc. are abiotic component of an habitat. Tulsi, snail and bacteria are living components of an habitat.

Mountains usually have trees that cools the environment. Hence, the animals with thick fur are most likely to be found in mountains, fur insulate the body and keeps the body warm.

Plants depend on abiotic components for food. They use carbon dioxide, water and sunlight for preparing food by photo-synthesis.

The hump of a camel stores food, which provides it energy during food shortage. Hence, when there is no food for a long time, the hump will shrink in size and will retain its size when food is available.