Zoology Introduction To Animals

Front

What is the mesoderm?

Back

The mesoderm is one of the three germ layers in an animal embryo that gives rise to muscles and much of the circulatory, reproductive, and excretory systems.

Front

What type of waste do animals eliminate through their excretory system?

Back

Animals eliminate ammonia as a type of waste through their excretory system.

Front

What is a zygote?

Back

A zygote is a fertilized egg that results from the union of a sperm and an egg.

Front

What does it mean to be heterotrophic?

Back

Heterotrophic organisms must obtain nutrients and energy by eating other organisms.

Front

What is a coelom?

Back

A coelom is a body cavity that is completely lined with mesoderm.

Front

What are the three germ layers in an animal embryo?

Back

The three germ layers are ectoderm, mesoderm, and endoderm.

Front

What is the function of the ectoderm?

Back

The ectoderm is the outermost germ layer that develops into the skin, nervous system, and other structures.

Front

What is the role of the endoderm?

Back

The endoderm is the innermost germ layer that forms the lining of the digestive tract and other internal organs.

Front

What is the difference between autotrophic and heterotrophic organisms?

Back

Autotrophic organisms produce their own food through photosynthesis or chemosynthesis, while heterotrophic organisms obtain food by consuming other organisms.

Front

What is a blastula?

Back

A blastula is an early stage of embryonic development that consists of a hollow ball of cells.