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CBSE Questions for Class 6 Biology Living Organisms Characteristics And Habitats Quiz 2 - MCQExams.com
CBSE
Class 6 Biology
Living Organisms Characteristics And Habitats
Quiz 2
Plants are considered as living organism because
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They are capable of movement.
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They are capable to locomote.
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They can breathe.
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Both A and C.
Explanation
As a response to external stimuli, the plants show movement. For eg. plants tend to move towards the source of light, this is positive phototropism. It is prominently seen in sunflower. It also shows hydrotropism in the roots.
It is proved experimentally that plants can breathe.
The basic principle of breathing includes the exchange of gases. It is seen that plants absorb carbon dioxide and release oxygen.
So the correct option is D "both A and C."
What does Habitat refers to?
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Environment of a region
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The social environment
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Economic lifestyle
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All of above
Explanation
The natural home or environment of an animal, plant, or other organism is known as that animal's habitat. It also includes the social environment and Economic lifestyle of the people as Habitat encompasses a person's usual or preferred surroundings.
Small changes that take place in the body of a single organism over short periods, to overcome small problems due to changes in the surroundings, are called____________.
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Habitat
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Adaptation
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Acclimatization
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None of these
Explanation
Small changes that take place in the body of a single organism over short periods, to overcome small problems due to changes in the surroundings, are called acclimatization. These changes are different from the adaptations that take place over thousands of years. Habitats are the places where organisms live.
Hence the correct option is C.
Read the following statements and select the correct ones.
(i) All living organisms grow.
(ii) All living organisms perform respiration.
(iii) 'Response to stimuli' is a defining property of living organisms.
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(i) and (ii)
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(ii) and (iii)
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(i) and (iii)
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(i), (ii) and (iii)
Explanation
All three statements are true.
All living organisms grow in size. For example. young ones of animals grow into adults.
All living organisms perform respiration. For example, all animals like cows, dogs, etc., take in oxygen, use it and then release the carbon dioxide produced in the process. Plants also perform respiration.
All living organisms respond to stimuli. Stimuli are the changes in the environment to which living organisms respond. For example, leaves of touch-me-not plant, close or fold when someone touches them. Another example can be of cockroaches moving to their hiding places when lights are turned on.
The key elements that determine differences in environmental conditions of different habitats include
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Temperature
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Light
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Soil
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All of these
Explanation
The environment is the sum of all biotic (living) and abiotic (non-living) factors that surround and practically influence the organism.
All components are interlinked and interdependent.
Biotic factors include different organisms.
Abiotic factors are non-living factors required for the survival, form, function, behaviour, and reproduction of organisms.
There are many abiotic factors. The four major abiotic factors that determine differences in the environmental conditions of different habitats are temperature, water, light, and soil.
So, the correct answer is 'All of the above'.
Which of the following is the habitat of the squirrel?
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Lake
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Sea
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Tree
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Cave
Explanation
Squirrels are mostly herbivores and they live on trees. They can be traced from tropical rainforest to semi-arid desert.
So, the correct answer is option C.
Which of the following is not a harsh habitat?
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Thermal spring
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High mountain top
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Rajasthan desert
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Fresh water lake
Which of the following cannot be called a habitat?
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A desert with camels.
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A pond with fishes.
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A jungle with wild animals.
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Cultivated land with grazing cattle.
Explanation
Habitat is said to be a natural environment where an organism lives. The grazing cattle do not live on the cultivated land.
So, t
he correct answer is option (d)
cultivated land with grazing cattle.
Habitat are inhabited by certain types of Flora and Fauna.
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True
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False
Explanation
Habitat are inhabited by certain types of Flora and Fauna which depend on the unique characterised of these Habitats for survival.
Boojho comes across an animal having a stream-lined and slippery body. What is the habitat of the animal?
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Water
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Desert
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Grassland
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Mountain
Explanation
Aquatic animals have streamlined and slipper body as it gets easier for them to swim through the water currents without damaging their bodies.
So,
the correct answer is option (a) Water.
Casuarina trees are seen in deserts.
Is the above statement true or false?
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True
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False
Explanation
Casuarina trees are found near the coasts and not in deserts. Plants like cactus are seen in deserts that are adapted to extremely low rainfall.
Hence the statement is false.
Cactus and camels are found in
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Mountains
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Desert
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Plains
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Coasts
Explanation
Camels and cactus are found exclusively in deserts.
Cactus and camels are adapted to low rainfall and in deserts, the amount of water available is very less.
Hence, the correct option is B.
If you are to visit the coastal city of Puri, which of the following plants are you most likely to see?
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Cactus
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Oaks
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Deodars
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Casuarina
Explanation
Casuarina
trees are found predominantly in the coastal areas.
Cactus is seen in deserts.
Oaks and deodars are seen in mountains.
Hence, the correct option is D.
Living organisms can be found in almost all the places on earth.
State whether the given statement is true or false.
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True
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False
Explanation
Living organisms can be seen in almost all the places on earth. Tiny organisms have been seen even on the tip of active volcanoes, in deserts and in extremely cold climates.
Hence the given statement is true.
Goats and yaks are seen in ___________.
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Mountains
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Deserts
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Coasts
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Tropical forest
Explanation
Yaks and goats can be seen predominantly in the cold climatic areas in the mountains.
Hence the correct option is A.
Places having different climates have _________ organisms.
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Same
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Different
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Similar
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None of these
Explanation
The type of organisms found at a place depends on the climatic conditions prevailing there. For instance, camels and cactus are found only in deserts while pine trees are found in mountains.
Hence the correct option is B.
Yaks are seen in mountains.
State whether the given statement is true or false.
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True
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False
Explanation
Animals such as yaks, goat and sheep are predominantly seen in the cold climatic regions in mountains.
Hence the given statement is true.
Which of the following are found in mountains?
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Casuarina
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Mangroves
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Oaks
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Cactus
Explanation
Oaks, pines and deodars are trees that are well adapted to cold climate prevailing in mountains such as Himalayas.
Casuarina
is found near the coasts.
Mangroves are found in coastal areas.
We found cactus naturally in deserts.
Hence, the correct option is C.
Which of the following is not an adaptation seen in camels to survive in deserts?
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Long legs
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Excrete more urine
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Less sweating
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Dry dungs
Explanation
The body structure of a camel helps it to survive in desert conditions. Camels have long legs which help to keep their bodies away from the heat of the sand.
They excrete a small amount of urine.
Their dung is dry, and they do not sweat.
Since camels lose very little water from their bodies, they can live for many days without water.
So, the correct option is B.
Which of the following is/are adaptations seen in fishes to live in water?
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Streamlined body
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Slippery scales
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Presence of gills
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All of the above
Explanation
All the fish have a streamlined shape. This shape helps them move into the water.
Fish have slippery scales on their bodies. These scales protect the fish and also help in easy movement through the water.
Fish have flat fins and tails that help them to change directions and keep their body balance in the water.
Gills present in the fish help them use oxygen dissolved in water.
Hence, the correct option is D.
If you are to visit the Himalayas, you are likely to come across which of the following organisms?
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Oaks
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Yaks
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Deodars
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All of these
Explanation
Himalayas are mountains with cold climate. Trees such as oaks, pines and deodars and animals such as yaks and goats can be seen here.
Hence the correct option is D.
Trees in mountains have
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Cone shape
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Sloping branches
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Thick stems that perform photosynthesis
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Both A and B
Explanation
Mountain trees 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.
Thick stems are seen in plants in deserts.
Hence the correct option is D.
Forests, deserts, grasslands are examples of
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Terrestrial habitat
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Aquatic habitat
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Biotic components
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Adaptation
Explanation
The place where organisms live is called habitat.
The plants and animals that live on land are said to live in terrestrial habitats.
Some examples of terrestrial habitats are forests, grasslands, deserts, coastal and mountain regions.
On the other hand, the habitats of plants and animals that live in water are called aquatic habitats. Lakes, rivers, and oceans are some examples of aquatic habitats.
Hence, the correct option is A.
Only one kind of plant or animal can inhabit a particular habitat.
State whether the above statement is true or false.
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True
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False
Explanation
The place where organisms live is called habitat.
Habitat means a dwelling place (a home).
The habitat provides food, water, air, shelter, and other needs for organisms.
Several kinds of plants and animals live in the same habitat.
Hence, the given statement is false.
Which of the following is not an abiotic factor?
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Rock
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Air
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Soil
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Plant
Explanation
All living organisms, be it microbes (bacteria, fungi, or protist), plants, or animals form biotic components.
The non-living things such as rocks, soil, air, and water in the habitat constitute its abiotic components.
Hence, the correct option is D.
The presence of specific features or certain habits, which enable an organism to live naturally in a place is called
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Adaptation
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Habitat
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Biotic factor
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Abiotic factor
Explanation
The presence
of specific features or certain habits,
which enable an organism to live
naturally in a place is called adaptation.
Adaptation of organisms differ
depending on their place of dwelling.
That is why a fish cannot live out of
water and a camel cannot live in sea.
The place where organisms live is
called habitat.
The organisms, both plants and
animals, living in a habitat are its biotic
components. The non-living things such
as rocks, soil, air and water in
the habitat constitute its abiotic
components.
Hence the correct option is A.
Deodars are seen in mountains.
Is the above statement true or false?
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True
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False
Explanation
Trees such as oaks, pines and deodars are adapted to grow in mountains where the climate is cold.
Hence the given statement is true.
If you were to visit the state of Rajasthan, which of the following are you most likely to see?
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Cactus
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Camels
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Both A and B
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Yaks
Explanation
Rajasthan is a state with desert type of climate and vegetation. Cactus and camels are adapted to low rainfall and hence can be seen here. Yaks are seen in mountains.
Hence the correct option is C.
The presence of specific features or certain habits, which enable an organism to live naturally in a place is called adaptation.
Is the above statement true or false?
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True
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False
Explanation
The presence of specific features or certain habits, which enable an organism to live naturally in a place is called adaptation.
Adaptation of organisms differs depending on their place of dwelling. That is why a fish cannot live out of the water and a camel cannot live in the sea.
Hence the given statement is true.
Yaks are seen in deserts.
Is the above statement true or false?
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True
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False
Explanation
Yaks are seen in mountains and they are specially adapted to survive in cold and windy climate.
Hence the correct option is B.
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