Question 91:
Which of the following animals has a segmented body and is known for burrowing?
A) Starfish
B) Earthworm
C) Seahorse
D) Clam
Answer: B) Earthworm
Explanation: Earthworms have a segmented body and are known for their burrowing habits in soil.
Question 92:
Which of the following is a characteristic feature of reptiles?
A) Lungs and scales
B) Gills and fins
C) Feathers and hollow bones
D) Fur and mammary glands
Answer: A) Lungs and scales
Explanation: Reptiles possess lungs for respiration and scales that help prevent water loss.
Question 93:
What is the primary role of the placenta in mammals?
A) Digestion
B) Gas exchange
C) Protection from predators
D) Temperature regulation
Answer: B) Gas exchange
Explanation: The placenta facilitates gas exchange, nutrient transfer, and waste removal between the mother and developing fetus.
Question 94:
Which of the following is a method of asexual reproduction?
A) Budding
B) Fertilization
C) Metamorphosis
D) Copulation
Answer: A) Budding
Explanation: Budding is a form of asexual reproduction where a new organism develops from an outgrowth or bud on the parent organism.
Question 95:
Which of the following organisms is classified as an amphibian?
A) Gecko
B) Frog
C) Salamander
D) Both B and C
Answer: D) Both B and C
Explanation: Both frogs and salamanders are classified as amphibians, known for their life cycles that typically include both aquatic and terrestrial stages.
Question 96:
What is the primary function of the swim bladder in fish?
A) Digestion
B) Buoyancy control
C) Respiration
D) Circulation
Answer: B) Buoyancy control
Explanation: The swim bladder allows fish to maintain buoyancy and stability at various depths in the water.
Question 97:
Which of the following groups of animals primarily consists of ectothermic species?
A) Birds
B) Mammals
C) Reptiles
D) Both A and C
Answer: C) Reptiles
Explanation: Reptiles are primarily ectothermic, relying on environmental heat sources to regulate their body temperature.
Question 98:
Which of the following adaptations is primarily found in animals that live in desert environments?
A) Webbed feet
B) Thick fur
C) Water storage capabilities
D) Gills
Answer: C) Water storage capabilities
Explanation: Animals adapted to desert environments often have mechanisms to store water or minimize water loss.
Question 99:
What is the primary function of feathers in birds?
A) Digestion
B) Insulation and flight
C) Respiration
D) Excretion
Answer: B) Insulation and flight
Explanation: Feathers provide insulation to maintain body temperature and are essential for flight in birds.
Question 100:
Which of the following is true about the animal kingdom?
A) All animals are unicellular.
B) All animals are autotrophic.
C) All animals are heterotrophic.
D) All animals reproduce asexually.
Answer: C) All animals are heterotrophic.
Explanation: All animals are heterotrophic, meaning they obtain their food by consuming other organisms
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