Living Creatures: Exploring Their Characteristics Part 3: MCQs (Q51–Q75)
Part 3 — Questions 51 to 75 (Detailed Characteristics: Respiration, Excretion, Adaptation, Reproduction)
51. Which is a universal characteristic of all living organisms?
A. Flying
B. Respiration ← Correct Answer
C. Photosynthesis
D. Walking
Explanation:
B) Correct — all living organisms, including microbes, respire for energy.
52. Which type of reproduction produces offspring identical to parents?
A. Sexual reproduction
B. Asexual reproduction ← Correct Answer
C. Cross-pollination
D. Fertilization
Explanation:
B) Correct — no gametes involved, offspring are clones.
53. In animals, growth occurs due to
A. Increase in number and size of cells ← Correct Answer
B. Depositing materials outside
C. Only reproduction
D. Expansion of bones only
Explanation:
A) Correct — cell division and enlargement cause growth.
54. Which of these living things can prepare its own food?
A. Human
B. Cow
C. Green plant ← Correct Answer
D. Dog
Explanation:
C) Correct — plants are autotrophs.
55. Which organ removes nitrogenous wastes in humans?
A. Lungs
B. Kidneys ← Correct Answer
C. Stomach
D. Heart
Explanation:
B) Correct — kidneys excrete urea through urine.
56. Which gas is released during respiration?
A. Oxygen
B. Carbon dioxide ← Correct Answer
C. Nitrogen
D. Hydrogen
Explanation:
B) Correct — CO₂ is a waste product of respiration.
57. Which process is common in plants and animals?
A. Photosynthesis
B. Respiration ← Correct Answer
C. Transpiration
D. Pollination
Explanation:
B) Correct — both plants and animals respire to release energy.
58. Which is NOT a feature of living things?
A. Growth
B. Rusting ← Correct Answer
C. Reproduction
D. Movement
Explanation:
B) Correct — rusting is a chemical reaction in metals.
59. Which of these shows irritability?
A. Burning of wood
B. Closing of mimosa leaves on touch ← Correct Answer
C. Melting of ice
D. Evaporation of water
Explanation:
B) Correct — response to stimulus = irritability.
60. Which of these organisms reproduces by spores?
A. Cat
B. Fungi ← Correct Answer
C. Dog
D. Fish
Explanation:
B) Correct — fungi like mold reproduce by spores.
61. Which adaptation helps desert plants reduce water loss?
A. Large leaves
B. Thin stems
C. Thick stems and spines ← Correct Answer
D. Soft leaves
Explanation:
C) Correct — cacti store water and have spines to reduce loss.
62. Which adaptation helps fish survive in water?
A. Lungs
B. Gills ← Correct Answer
C. Wings
D. Roots
Explanation:
B) Correct — gills absorb oxygen dissolved in water.
63. Birds have hollow bones because
A. They are weak
B. To make the body lighter for flight ← Correct Answer
C. To store air
D. To store fat
Explanation:
B) Correct — hollow bones reduce weight and help flight.
64. Which is NOT a mode of locomotion in animals?
A. Flying
B. Swimming
C. Running
D. Photosynthesis ← Correct Answer
Explanation:
D) Correct — photosynthesis is food making, not movement.
65. Which organ helps humans in breathing?
A. Kidneys
B. Heart
C. Lungs ← Correct Answer
D. Stomach
Explanation:
C) Correct — lungs exchange gases during respiration.
66. Which living process is absent in non-living things?
A. Respiration
B. Growth
C. Reproduction
D. All of these ← Correct Answer
Explanation:
D) Correct — non-living things show none of the life processes.
67. Which life process ensures energy for other processes?
A. Nutrition
B. Respiration ← Correct Answer
C. Excretion
D. Growth
Explanation:
B) Correct — respiration releases energy required for growth, reproduction, etc.
68. The removal of harmful substances like sweat and urea is called
A. Nutrition
B. Respiration
C. Excretion ← Correct Answer
D. Irritability
Explanation:
C) Correct — excretion eliminates metabolic wastes.
69. A cow chewing cud is an example of
A. Respiration
B. Mode of feeding (rumination) ← Correct Answer
C. Excretion
D. Reproduction
Explanation:
B) Correct — ruminants regurgitate food for digestion.
70. The sense organs in animals help in
A. Growth
B. Excretion
C. Response to stimuli ← Correct Answer
D. Reproduction
Explanation:
C) Correct — eyes, ears, nose, etc. help sense environment.
71. Which characteristic of living things is essential for evolution?
A. Respiration
B. Excretion
C. Reproduction ← Correct Answer
D. Growth
Explanation:
C) Correct — reproduction introduces variation for evolution.
72. Which of the following is a viviparous animal?
A. Hen
B. Human ← Correct Answer
C. Pigeon
D. Crocodile
Explanation:
B) Correct — viviparous = animals giving birth to young ones.
73. Which of the following is oviparous?
A. Dog
B. Hen ← Correct Answer
C. Cat
D. Cow
Explanation:
B) Correct — oviparous animals lay eggs.
74. Which characteristic is NOT common to all living organisms?
A. Growth
B. Reproduction
C. Respiration
D. Flying ← Correct Answer
Explanation:
D) Correct — flying is not universal to all living beings.
75. Which of these organisms shows movement but is non-living?
A. Cat
B. Plant
C. Clouds ← Correct Answer
D. Dog
Explanation:
C) Correct — clouds move due to wind, but they are non-living.
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