Animal Kingdom Overview - Higher Difficulty Problems
Q. In which group of animals does external fertilization primarily occur?
-
A.
Mammals
-
B.
Birds
-
C.
Amphibians
-
D.
Reptiles
Solution
Amphibians typically undergo external fertilization, where eggs are fertilized outside the female's body.
Correct Answer: C — Amphibians
Q. What is the primary function of the swim bladder in fish?
-
A.
Respiration
-
B.
Buoyancy control
-
C.
Reproduction
-
D.
Digestion
Solution
The swim bladder allows fish to maintain buoyancy and control their depth in the water.
Correct Answer: B — Buoyancy control
Q. What is the primary role of the placenta in mammals?
-
A.
Nutrient absorption
-
B.
Gas exchange
-
C.
Waste elimination
-
D.
All of the above
Solution
The placenta facilitates nutrient absorption, gas exchange, and waste elimination between the mother and developing fetus.
Correct Answer: D — All of the above
Q. What is the term for the evolutionary process by which unrelated organisms develop similar traits?
-
A.
Convergent evolution
-
B.
Divergent evolution
-
C.
Adaptive radiation
-
D.
Co-evolution
Solution
Convergent evolution occurs when unrelated species evolve similar traits due to similar environmental pressures.
Correct Answer: A — Convergent evolution
Q. What type of symmetry is exhibited by most echinoderms?
-
A.
Bilateral symmetry
-
B.
Radial symmetry
-
C.
Asymmetry
-
D.
Spherical symmetry
Solution
Most echinoderms, such as starfish, exhibit radial symmetry, especially as adults.
Correct Answer: B — Radial symmetry
Q. Which of the following is a defining feature of reptiles?
-
A.
Moist skin
-
B.
Feathers
-
C.
Scales
-
D.
Live birth
Solution
Reptiles are characterized by their scaly skin, which helps prevent water loss in terrestrial environments.
Correct Answer: C — Scales
Q. Which of the following is a key feature of the phylum Chordata?
-
A.
Notochord
-
B.
Exoskeleton
-
C.
Radula
-
D.
Tentacles
Solution
The presence of a notochord is a defining characteristic of the phylum Chordata, which includes vertebrates.
Correct Answer: A — Notochord
Q. Which of the following is NOT a characteristic of arthropods?
-
A.
Exoskeleton
-
B.
Jointed appendages
-
C.
Cold-blooded
-
D.
Vertebral column
Solution
Arthropods do not have a vertebral column; they possess an exoskeleton and jointed appendages.
Correct Answer: D — Vertebral column
Q. Which of the following structures is responsible for gas exchange in mammals?
-
A.
Bronchi
-
B.
Alveoli
-
C.
Trachea
-
D.
Lungs
Solution
Alveoli are tiny air sacs in the lungs where gas exchange occurs, allowing oxygen to enter the blood and carbon dioxide to be expelled.
Correct Answer: B — Alveoli
Showing 1 to 9 of 9 (1 Pages)
