#1
Which of the following is not a characteristic of vertebrates?
Exoskeleton
ExplanationVertebrates typically possess an endoskeleton.
#2
What is the primary function of the vertebral column?
Protection of internal organs
ExplanationThe vertebral column provides structural support and protects the spinal cord and other internal organs.
#3
Which of the following is not a characteristic of the circulatory system in vertebrates?
Absence of blood vessels
ExplanationBlood vessels are essential components of the vertebrate circulatory system, facilitating the transport of blood throughout the body.
#4
In which vertebrate group would you find an amniotic egg?
Reptiles
ExplanationAmniotic eggs are a hallmark of reptiles, providing protection and nourishment to developing embryos.
#5
Which of the following is not a feature of the mammalian integumentary system?
Feathers
ExplanationFeathers are exclusive to birds and not a component of the mammalian integumentary system.
#6
Which of the following is a unique characteristic of mammals among vertebrates?
Mammary glands
ExplanationMammary glands are a defining feature of mammals, allowing for the production of milk to nourish offspring.
#7
What is the function of the cerebellum in the vertebrate brain?
Coordination of movement
ExplanationThe cerebellum plays a crucial role in coordinating voluntary movements, balance, and posture.
#8
What is the function of the swim bladder in bony fish?
Buoyancy control
ExplanationThe swim bladder aids bony fish in regulating buoyancy, allowing them to ascend or descend in the water column.
#9
Which structure in birds is analogous to the mammalian diaphragm?
Air sacs
ExplanationAir sacs in birds play a role in facilitating efficient respiration, analogous to the diaphragm in mammals.
#10
Which of the following is a characteristic of endothermic vertebrates?
Ability to maintain a constant internal body temperature
ExplanationEndothermic vertebrates can regulate their body temperature internally, enabling them to thrive in various environments.
#11
Which of the following vertebrates is ectothermic?
Frogs
ExplanationEctothermic vertebrates rely on external sources of heat to regulate body temperature, as seen in amphibians like frogs.
#12
Which of the following is a characteristic feature of the class Chondrichthyes?
Cartilaginous endoskeleton
ExplanationChondrichthyes, such as sharks and rays, possess a skeleton made of cartilage rather than bone.
#13
Which of the following is a characteristic feature of the class Aves?
Feathers
ExplanationFeathers are a defining characteristic of birds (Class Aves), aiding in flight, insulation, and display.
#14
Which of the following is a characteristic feature of the class Amphibia?
Moist skin for respiration
ExplanationAmphibians have moist skin that aids in respiration through cutaneous gas exchange, allowing them to respire both on land and in water.
#15
Which of the following is a characteristic feature of the class Mammalia?
Presence of mammary glands
ExplanationMammals are distinguished by the presence of mammary glands, which produce milk to nourish their young.