Refer to CBSE Class 6 Science The Living Organisms and Their Surroundings MCQs provided below available for download in Pdf. The MCQ Questions for Class 6 Science with answers are aligned as per the latest syllabus and exam pattern suggested by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 9 The Living Organisms and Their Surroundings are an important part of exams for Class 6 Science and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 6 Science and also download more latest study material for all subjects
MCQ for Class 6 Science Chapter 9 The Living Organisms and Their Surroundings
Class 6 Science students should refer to the following multiple-choice questions with answers for Chapter 9 The Living Organisms and Their Surroundings in Class 6.
Chapter 9 The Living Organisms and Their Surroundings MCQ Questions Class 6 Science with Answers
Question. Arun tabulates some characteristics of two large marine animals. What could they be?
a. P - Dolphin; Q - Shark
b. P - Dolphin; Q - Whale
c. P - Whale; Q - Shark
d. P - Shark; Q – Whale
Answer : D
Question. During breathing, air enters our body through the nose and reaches the lungs. What is the correct route through which it travels to the lungs.
The question relates to the process of breathing.
a. Pharynx, Larynx, Trachea, Bronchi
b. Pharynx, Larynx, Bronchi, Trachea
c. Larynx, Pharynx, Trachea, Bronchi
d. Larynx, Glottis, Pharynx, Trachea
Answer : A
Question. Why is it important to breathe through the nose and not the mouth?
The question relates to the process of breathing
a. The nose filters the dust in the inhaled air.
b. The nose helps us breathe even while eating.
c. The nose helps us smell the impurities in the air.
d. The nose helps to cool the inhaled air.
Answer : A
Question. Look at the animals shown below. What is common to all of them?
a. They are all herbivores.
b. They are all carnivores.
c. They all give birth to young ones.
d. They are all small in size.
Answer : C
Question. Which of the following is/are NOT PRESENT in a new-born child?
a. Nails
b. Teeth
c. Eyes
d. Tongue
Answer : B
Question. When Naveen killed a mosquito, he found there was some blood on his hands. Where could this blood have come from?
a. The mosquito must have cut Naveen's hand before he killed it.
b. The blood is from the mosquito's circulatory system.
c. The blood is Naveen's or someone else's who the mosquito had bitten.
d. (Options B or C above may be possible)
Answer : C
Question. How will the temperature of the blood in our heart differ on a cold wintry night compared to a hot summer day?
a. It will be lower on the cold wintry night.
b. It will be higher on the cold wintry night.
c. It will be the same in both the situations.
d. It will be different but does not depend on the outside temperature.
Answer : C
Question. What is the relationship between a person's PULSE RATE and his or her HEART BEAT?
a. The heart beat is always double the pulse rate.
b. The heart beat is always half of the pulse rate.
c. There is no relationship between the heart beat and the pulse rate.
d. The heart beat and pulse rate may change, but are always equal.
Answer : D
Question. Using the animal key given, identify the class to which this animal (spider) belongs.
a. Aves
b. Other classes of vertebrates
c. Insecta
d. Arachnids
Answer : D
Question. The average number of heart beats per minute of various animals is as shown: Choose the best conclusion you can draw from the above.
a. Animals that live in water have a very high rate of heart beats per minute.
b. Animals that live in farms have higher heart beat rates than all other animals.
c. Number of heart beats per minute decreases with increase in size of the animals.
d. Number of heart beats per minute decreases with decrease in size of the animals.
Answer : C
Question. What happens to our heart beat when we have fever?
a. It rises.
b. It falls.
c. It stays the same.
d. It may rise or fall depending on the type of the fever.
Answer : A
Question. Identify the kind of soil that is made of decayed leaves, twigs, dead insects and animals.
a. clay
b. top soil
c. sand
d. Humus
Answer : D
Question. It is found that many insecticides used to keep insects away from plants and crops are not as effective these days as they were years ago when they started being used. What could be the reason for this?
a. The insects adapt, developing resistance to the insecticide.
b. Adulteration of the insecticides makes them ineffective.
c. Pollution in the environment makes the insecticide ineffective.
d. The insecticides are effective, but the number of insects has grown.
Answer : A
Question. All living things react to sound, touch etc. Whatever causes a living thing to react is called a stimulus. The reaction is called a response. Which of these is an example of a STIMULUS-RESPONSE?
a. A girl covering her eyes when a beam of light falls on her face.
b. A kitten playing with a ball of wool
c. A boy studying for a test on the next day.
d. A cow eating grass.
Answer : A
Question. Where among these will maximum topsoil erosion take place?
a. on a slope with thick vegetation cover
b. on a flat piece of land with no vegetation cover
c. on a flat piece of land with thick vegetation cover
d. on a slope with no vegetation cover
Answer : D
Question. Which animals have scales and lay eggs that have tough outer shells?
a. Fish
b. Amphibians
c. Reptiles
d. Birds
Answer : C
Question. In the table above, 'X' could be replaced by
a. Whale
b. Crocodile
c. Crane
d. Frog
Answer : B
Question. Which of the following statements about the human heart is TRUE?
a. Veins are blue in colour because they carry deoxygenated blood.
b. Transfer of oxygen and carbon dioxide to the blood happens in the heart.
c. The muscles of the heart do not have any blood carrying vessels.
d. The heart's role is to pump blood to the lungs and other parts of the body.
Answer : D
Question. Which of these houses would be best for a low lying area receiving heavy monsoon rains?
Answer : B
Question. Late in August, a bird called the arctic tern starts its long journey from the Arctic to the Antarctica region. The birds return to the Arctic only in mid-June. Why do birds like the arctic tern migrate?
a. for food and warmth
b. to escape from predators
c. to move to cooler lands
d. to protect their young ones
Answer : A
Question. P, Q and R are three living or non-living things in which the processes X, Y and Z are observed.
Process X: Gives out carbon dioxide
Process Y : Gives out carbon dioxide and a lot of heat and light
Process Z: Gives out oxygen
If among P, Q and R, at most one is non living, which one could it be?
P | Q | R | |
X | # | # | |
Y | # | ||
Z | # |
a. P
b. Q
c. R
d. (None of them)
Answer : A
Question. Some soil was taken in a dish which was divided into 4 areas P, Q, R and S using a wire gauze. Areas P and Q were kept moist, while R and S were dry. Areas Q and S were kept dark.
Equal numbers of a soil animal were introduced in each of the four areas. It was possible for the animals to move from one area to another.
After some days it was found that all the animals were in area Q.
The same experiment was repeated 3 times and in all the cases, the animals had moved to area Q.
From this we can deduce that the animals prefer to live
a. in large groups
b. in dry and dark places
c. in moist and dark places
d. in moist and bright places
Answer : C
Question. Which of these sentences is NOT true about the equator?
a. It divides the earth into two equal hemispheres.
b. There is no such real line - It is purely imaginary.
c. It is the same as the zero degree longitude line.
d. The weather along it is similar through the year.
Answer : C
Question. When animals hibernate, their heart rate and respiration decrease and they lose consciousness. Why do some animals hibernate?
a. To increase their body fat during cold periods
b. To conserve energy usage during the winter
c. To give their fur time to grow longer and thicker
d. To rest after a summer of high activity
Answer : B
Question. Which of these pairs of organisms probably depends the most on camouflage for protection?
Answer : A
Question. Biologically, which of these are NOT animals? Peacocks, mosquitoes, cows, mice, cactii (cactus)
a. Only cactii
b. Cactii and mosquitoes only
c. Cactii and peacocks only
d. Cactii, mosquitoes and peacocks
Answer : A
Question. The water hyacinth is able to float on water because its__________________
a. flowers trap air.
b. stem is fibrous and light.
c. leaves have a thick waxy coat.
d. leaf stalks have lots of air space.
Answer : D
Question. A fish breathes through its gills whereas whales breathe through their___________
a. lungs
b. air holes.
c. skin
d. mouth.
Answer : A
Question. Which of the following 'life processes' is seen in animals but not in plants?
a. movement
b. reproduction
c. growth
d. Nourishment
Answer : A
Question. Lions eat deer. It was observed in a forest that the lion population decreased due to certain reasons. If there were no other changes in the forest, what is likely to be the effect on the deer population?
a. The deer population will be unaffected.
b. The deer population will increase.
c. The deer population will decrease.
d. The deer population is not related to the lion population - it may increase or decrease.
Answer : B
Question. The presence of specific features or certain habits, which enable a plant or an animal to live in its surroundings, is called____________
a. Habitat
b. Adaptation
c. Terrestrial
d. Aquatic
Answer : A
Question. In the sea plants and animals are surrounded by:
a. Sweet water
b. Saline water
c. Hot water
d. Cold water
Answer : A
Question. Camels have long legs which help to :
a. Run long distances
b. Keep their body away from the heat of the desert
c. Carry a lot of luggage
d. Be able to run in the sand
Answer : B
Question. Fishes have scales on their body. This helps them to _________
a. Remain in the same place in water.
b. Balance themselves in water
c. Change directions in water
d. Swim in water.
Answer : A
Question. The surroundings where organisms live is called;
a. Adaptation
b. Habitat
c. Environment
d. Abiotic environment
Answer : C
Question. The habitat of plants and animals that live in water is called
a. Aquatic
b. Terrestrial
c. Mountain
d. Grassland
Answer : A
Question. The mountain goat has strong hooves:
a. For attacking other animals
b. For protecting it from cold
c. For running up the rocky slopes
d. For scratching its back
Answer : C
Question. Lions have eyes in front because
a. It can see the colour of t he object correctly
b. It should look in front only
c. It can locate its prey exactly
d. It knows the presence of its prey.
Answer : C
Question. Suppose you accidently sit on a drawing pin. You would jump up quickly. The pricking of the pin is called the ____.
a. Response
b. paining reaction
c. quick reaction
d. stimulus
Answer : A
Question. Living beings are characterized by all except ____.
a. Reproduction
b. Locomotion
c. Respiration
d. getting crystallized
Answer : D
Question. Which of the following metabolic activity is responsible for replacing and repairing tissues?
a. Reproduction
b. Cell division
c. Digestion
d. Growth
Answer : B
1. The place where living beings live is called their ______________
(a) Adaptation (b) Habitat (c) Habit (d) Movement
2. In Cactus plant, _____________ are reduced to spines
(a) Leaves (b) Flowers (c) roots (d) Stem
3. Singhara is an example of _______________
(a) Xerophyte (b) Hydrophyte (c) Mesophyte (d) None of the above
4. Global warming increases the concentration of ___________ in the atmosphere
(a) Oxygen (b) Nitrogen (c) Carbon dioxide (d) Hydrogen
5. Science of study of living things is called ___________
(a) Botany (b) Biology (c) Zoology (d) None of these
6. Bacteria and fungus are examples for ____________
(a) Producers (b) Consumers (c) Decomposers (d) None of these
7. A microscopic plant which can move in water is _____________
(a) Sea-nemone (b) Sponge (c) Celotropis (d) Chlamybomonas
8. Plant waste given out in the form of thick fluid is called as ___________________
(a) Gum (b) Urine (c) Latex (d) Sweat
9. Growth in living things is ____________
(a) Temporary & reversible (b) Permanent and irreversible (c) Both (a) & (b) (d) None of the above
10. The process of producing energy by the break down of food is called ______________
(a) photosynthesis (b) transpiration (c) respiration (d) reproduction
11. Minute pores present in the leaves which help in exchange of gases are called _____________
(a) Style (b) Stamen (c) Stomata (d) Stigma
12. The basic structural and functional unit of living organisms are called as _______________
(a) Cells (b) tissue (c) Organ (d) Organ - System
13. Hydrilla is an example for ____________
(a) Submerged Hydrophyte (b) Floating Hydrophyte (c) Semi-floating Hydrophyte (d) None of the above
14. Living component of a habitat is called as ____________
(a) Abiotic (b) Aquatic (c) Biotic (d) Amphibious
15. ____________ are organisms which cannot prepare their food.
(a) Autotrophs (b) Phototrophs (c) Heterotrophs (d) None of the above
16. Anything which produce and response in an organism is called as ____________
(a) Life Cycle (b) Adaptation (c) Stimulus (d) Growth
17. An example for unicellular organism is ___________
(a) Yeast (b) Mango Plant (c) Dog (d) Men
18. Life cycle of a living organism begins with _____________
(a) Birth (b) Growth (c) Death (d) Reproduction
19. Wind dispersed seeds have ____________________
(a) wings & hair (b) Hooks (c) fibrous outercoat (d) None of the above
20. Adaptation found in palm and coconut trees is ________________
(a) Leaves are reduced (b) Leaves become needle shape (c) Leaves become deeply incised / Seveted (d) Trees grow tall without branches
21. Buffaloes are often found near ponds because
(a) They breath only in the pond (b) They cool themselves in the pond
(c) They like to play in water (d) None of the above
22. A potted plant is kept in a card board box with a small slit of sun light exhibits ___________
(a) Photographic movement (b) Geo-movement (c) Both a & b (d) None of the above
23. If we blow through lime water it turns milky. This proves that _________
(a) lime water has milk in it (b) lime water has oxygen in it (c) Exhaled air contains carbon dioxide (d) None of the above
24. We move our hand immediately, if we touch the hot object. In this which is stimulus.
(a) hand (b) brain (c) hot object (d) spinal cord
25. Dolphins and whales breathe through _____________
(a) Gills (b) Skin (c) Lungs (d) Blowholes
ANSWER KEY FOR : LIVING ORGANISMS &THEIR SURROUNDINGS
1. The place where living beings live is called their Habitat
2. In Cactus plant, Leaves are reduced to spines
3. Singhara is an example of Hydrophyte
4. Global warming increases the concentration of carbon dioxide in the atmosphere
5. Science of study of living things is called Biology
6. Bacteria and fungus are examples for Decomposers
7. A microscopic plant which can move in water is Chlamydomonas
8. Plant waste given out in the form of thick fluid is called as Latex
9. Growth in living things is permanent & irreversible
10. The process of producing energy by the break down of food is called Respiration
11. Minute pores present in the leaves which help in exchange of gases are called Stomata
12. The basic structural and functional unit of living organisms are called as Cells
13. Hydrilla is an example for Submerged Hydrophyte
14. Living component of a habitat is called as Biotic
15. Heterotrophs are organisms which cannot prepare their food.
16. Anything which produce and response in an organism is called as Stimulus
17. An example for unicellular organism is Yeast
18. Life cycle of a living organism begins with Birth
19. Wind dispersed seeds have wings & hair
20. Adaptation found in palm and coconut trees is Leaves become needle shape
21. Buffaloes are often found near ponds because they cool themselves in the pond
22. A potted plant is kept in a card board box with a small slit of sun light exhibits Phototraphic movement
23. If we blow through lime water it turns milky. This proves that exhaled air contains carbon dioxide
24. We move our hand immediately, if we touch the hot object. In this which is stimulus hand
25. Dolphins and whales breathe through Blowholes
Answer Key
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MCQs for Chapter 9 The Living Organisms and Their Surroundings Science Class 6
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