Question 61:
Which of the following is NOT a characteristic of birds?
A) Feathers
B) Hollow bones
C) Mammary glands
D) Beak
Answer: C) Mammary glands
Explanation: Birds do not have mammary glands; this is a characteristic specific to mammals.
Question 62:
Which type of symmetry do sea urchins exhibit?
A) Bilateral symmetry
B) Radial symmetry
C) Asymmetry
D) Pentaradial symmetry
Answer: D) Pentaradial symmetry
Explanation: Sea urchins exhibit pentaradial symmetry, meaning they have fivefold symmetry around a central axis.
Question 63:
Which of the following structures is primarily involved in locomotion in annelids?
A) Gills
B) Tentacles
C) Segments and setae
D) Wings
Answer: C) Segments and setae
Explanation: Annelids use their segmented bodies and bristle-like structures called setae for locomotion through soil or water.
Question 64:
Which of the following animals is a representative of the phylum Arthropoda?
A) Snail
B) Jellyfish
C) Spider
D) Earthworm
Answer: C) Spider
Explanation: Spiders are arachnids, which are part of the phylum Arthropoda, characterized by their jointed legs and exoskeleton.
Question 65:
What type of body plan do echinoderms exhibit?
A) Asymmetrical
B) Bilateral
C) Radial
D) Pentaradial
Answer: D) Pentaradial
Explanation: Adult echinoderms exhibit pentaradial symmetry, often with five arms or sections radiating from a central point.
Question 66:
Which of the following animals is a filter feeder?
A) Shark
B) Clam
C) Owl
D) Cheetah
Answer: B) Clam
Explanation: Clams are filter feeders that obtain their food by filtering water through their gills to capture particles.
Question 67:
What is the primary role of the notochord in chordates?
A) Protection
B) Support
C) Respiration
D) Digestion
Answer: B) Support
Explanation: The notochord provides structural support during the development of chordates and eventually becomes part of the vertebral column in vertebrates.
Question 68:
Which type of animal is known for its ability to regenerate limbs?
A) Fish
B) Lizard
C) Starfish
D) Frog
Answer: C) Starfish
Explanation: Starfish have remarkable regenerative abilities, allowing them to regrow lost limbs.
Question 69:
Which of the following animals lays eggs?
A) Platypus
B) Kangaroo
C) Elephant
D) Dolphin
Answer: A) Platypus
Explanation: The platypus is a monotreme, a type of mammal that lays eggs rather than giving birth to live young.
Question 70:
Which group of animals is characterized by having feathers, a beak, and laying hard-shelled eggs?
A) Mammals
B) Reptiles
C) Birds
D) Amphibians
Answer: C) Birds
Explanation: Birds are characterized by feathers, a beak, and the ability to lay hard-shelled eggs, distinguishing them from other animal groups.
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