Class 7 General Science Solved Mcqs - Part 1
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1. The
place where digested food is absorbed:
(A) Small
intestine
(B) Large
intestine
(C) Stomach
(D) Mouth
2. What
part of our body contracts and move down when we inhale?
(A) Bronchioles
(B) Alveoli
(C) Diaphragm
(D) Kidneys
3. Air
is moistened, filtered and warmed in the:
(A) Esophagus
(B) Nose
(C) Mouth
(D) Stomach
4. A
large muscle that separates the chest cavity from the abdominal cavity and
helps in breathing.
(A) Larynx
(B) Trachea
(C) Diaphragm
(D) Alveolus
5. Which
produces juice for the final digestions of proteins, fats and carbohydrates?
(A) Mouth
(B) Large
intestine
(C) Pancreas
(D) Gallbladder
6. The
reverse process of peristalsis:
(A) Breathing
(B) Burning
(C) Vomiting
(D) Blood
circulation
7. The
human body is made of:
(A) Hundreds
cells
(B) Thousands
cells
(C) Millions
cells
(D) Trillions
cells
8. Cells
group together to form:
(A) Tissues
(B) Organs
(C) Systems
(D) None of
these
9. The
process of changing food into simpler form is:
(A) Respiration
(B) Digestion
(C) Peristalsis
(D) Vomiting
10. Its
stats the digestion of carbohydrates in mouth:
(A) Saliva
(B) Bile
(C) Digestive
juice
(D) None of
these
11. The
process of wave like movements in esophagus to push the food is called:
(A) Digestion
(B) Respiration
(C) Peristalsis
(D) Vomiting
12. Stomach
is a large muscular bag of:
(A) I shaped
(B) J
shaped
(C) S shaped
(D) T shaped
13. The
process of taking air and expelling out of the lungs is:
(A) Digestion
(B) Respiration
(C) Breathing
(D) Burning
14.
_________ allows things to go down the right way.
(A) Throat
(B) Food pipe
(C) Wind pipe
(D) Epiglottis
15.
_________ helps to clear dust, mucous and germs from our nose and
throat.
(A) Fever
(B) Headache
(C) Sneeze
(D) Cough
16.
___________ is the main cause of lung cancer.
(A) Running
(B) Jumping
(C) Smoking
(D) Swimming
17. Blood
is carried away from the heat in:
(A) Arteries
(B) Veins
(C) Nerves
(D) Ureters
18. Where
does the exchange of food, oxygen and wastes occur in the human body?
(A) In arteries
(B) In veins
(C) In
capillaries
(D) In lymph
vessels
19. Why
does the blood turn dark red as it circulates through the body?
(A) It starts
to clot
(B) It gets old
and dirty while flowing through the body
(C) The
oxygen in it is replaced with carbon dioxide
(D) The farther
blood is from the heart, the darker red it is
20. The
movement of prepared food from leaves to those parts of plant body where it is
needed is called:
(A) Transpiration
(B) Translocation
(C) Osmosis
(D) Active
transport
21. Which
chamber of the hearth receives the oxygenated blood from the lungs?
(A) Right
atrium
(B) Left
atrium
(C) Right
ventricle
(D) Left
ventricle
22. The
loss of water by evaporation from plants is called:
(A) Translocation
(B) Transpiration
(C) Pressure
flow
(D) Diffusion
23. The
main circulatory organ in human is:
(A) Lungs
(B) Vein
(C) Heart
(D) Atria
24. Heart
is a muscular organ about the size of our:
(A) Finger
(B) Wrist
(C) Hand
(D) Fist
25. Heart
pumps deoxygenated blood to:
(A) Lungs
(B) Kidneys
(C) Brain
(D) Stomach
26. A
hard substance plaque can build up in the walls of:
(A) Pulmonary
veins
(B) Coronary
arteries
(C) Valves
(D) Capillaries
27. The
plaque is made of:
(A) Fats and
protein
(B) Fats and carbohydrates
(C) Fats only
(D) Fats
and other cells
28. The
death of a part of heart is called:
(A) Heart
attack
(B) Blood
pressure
(C) Diabetes
(D) Asthma
29. The
have a big impact on our blood sugar level:
(A) Fats
(B) Protein
(C) Carbohydrates
(D) Minerals
30. Prepared
food in plants is transported from leaves to all other parts through:
(A) Xylem
(B) Phloem
(C) Root hair
(D) None of
these
31. The
loss of water by evaporation from plants is:
(A) Transpiration
(B) Diffusion
(C) Translocation
(D) Absorption
32. Food
moves through phloem in form of:
(A) Solid
(B) Gas
(C) Solution
(D) All of
these
33. The
part of a plant that forms seeds is the:
(A) Stem
(B) Root
(C) Leaf
(D) Flower
34. When
a bee visits a flower:
(A) Seeds stick
to its body
(B) Cones stick
to its body
(C) Pollen
grains stick to its body
(D) Fruit
sticks to its body
35. Which
structure is helpful to the pollen grains to carry sperms to the ovary?
(A) Cotyledon
(B) Carpel
(C) Pollen
tube
(D) Seed
36. The
sticky part of a flower is called:
(A) Sepal
(B) Stamen
(C) Ovary
(D) Stigma
37. Asexual
reproduction involves:
(A) Two gametes
(B) A
single parent plant
(C) Only male
sex cell
(D) Fertilization
38. The
process by which organisms produce more organisms like themselves is:
(A) Reproduction
(B) Pollination
(C) Fertilization
(D) Growth
39. It
is the male sex cell:
(A) Petal
(B) Sepal
(C) Sperm
(D) Egg
40. The
female sex cell is:
(A) Egg
(B) Sperm
(C) Sepal
(D) Petal
41. Wind
pollinated flowers produce a large number of:
(A) Sperm
(B) Egg
(C) Pollen
grains
(D) Gametes
42. Flowering
plants reproduces by:
(A) Eggs
(B) Sperm
(C) Seeds
(D) Spores
43. These
are responsible in plants for sexual reproduction:
(A) Leaves
(B) Roots
(C) Stems
(D) Flowers
44. Pollen
tube grows out from:
(A) Sperm
(B) Egg
(C) Ovary
(D) Pollen
tube
45. It
is the most important part of a seed:
(A) Embryo
(B) Radicle
(C) Plumule
(D) Cotyledon
46. The
sunlight energy enters in an ecosystem through:
(A) Plants
(B) Decomposers
(C) Animals
(D) Water
47. Organisms
that make their own food are called:
(A) Producers
(B) Heterotrophs
(C) Consumers
(D) Decomposers
48. Bacteria
and fungi are:
(A) Decomposers
(B) Producers
(C) Grazers
(D) Predators
49. Which
one is a producer in an ecosystem?
(A) Lion
(B) Hawk
(C) Plant
(D) Rat
50. Which
organisms have maximum amount of energy in a food chain?
(A) Primary
consumers
(B) Secondary
consumers
(C) Tertiary
consumers
(D) Producers
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