Animal Biology MCQs with Answers

The outermost layer of skin in vertebrates is called the _______________.

The group of mammals that lay eggs are called _______________.

Animals that have a body temperature that fluctuates with the temperature of their environment are called _______________.

The specialized blood vessel in mammals that shunts blood away from the lungs before birth is called the _______________.

The specialized cells responsible for muscle contraction are called _______________.

Animals that feed on both plants and animals are called _______________.

The process by which an animal's body undergoes changes to reach sexual maturity is called _______________.

The specialized cells responsible for transmitting electrical signals in the nervous system are called _______________.

The process by which animals maintain a stable internal environment despite external fluctuations is called _______________.

Animals that primarily feed on other animals are called _______________.

Animals that maintain a constant body temperature are called _______________.

Animals that have a body temperature that fluctuates with the temperature of their environment are called _______________.

Animals that live both on land and in water are called _______________.

The process of converting food into chemical energy within cells is called _______________.

The specialized cells responsible for transmitting electrical signals in the nervous system are called _______________.

The fluid-filled cavity that surrounds the developing embryo in mammals is called the _______________.

The structure in birds and reptiles that allows for the storage of urine before excretion is called the _______________.

The specialized respiratory structure in fish that allows for gas exchange in water is called the _______________.

The process by which animals convert food into energy is called _______________.

The process by which animals break down food into smaller molecules that can be absorbed is called _______________.

The period of reduced activity and metabolism in animals during hot, dry conditions is called _______________.

Animals with a backbone are called _______________.

The process of producing offspring from unfertilized eggs is called _______________.

Animals that hibernate during the winter months are exhibiting _______________.

The tough, flexible outer covering of arthropods is called the _______________.

The process of shedding an exoskeleton in arthropods is called _______________.

The structure in birds that facilitates the efficient exchange of gases is the _______________.

The process of shedding old feathers and growing new ones in birds is called _______________.

Which of the following is NOT a method of animal reproduction?

Animals that have a pouch in which they carry and nurse their young are called _______________.

The process by which animals take in oxygen and release carbon dioxide is called _______________.

Animals that obtain their body heat from external sources are called _______________.

The process by which animals go through distinct stages of development, such as larval stages, is called _______________.

Animals that have a two-chambered heart are typically _______________.

Animals that undergo complete metamorphosis typically have four stages: egg, larva, _______________, adult.

Animals that feed on plants are called _______________.

_______________ is the scientific study of animal behavior.

Which of the following is NOT a characteristic of mammals?

Animals that migrate to warmer regions during the winter months are exhibiting _______________.

The process of converting nitrogenous waste into less toxic forms in animals is called _______________.