Biology · STRUCTURAL ORGANISATION IN ANIMALS

Which of the following statements regarding the structural organisation of organs in complex animals is correct?

An organ like the heart consists of all four primary types of tissues: epithelial, connective, muscular, and neural.
The human heart is composed exclusively of muscular and neural tissues, completely lacking connective tissue.
Each organ in the body is formed of only a single specific type of tissue performing a unique function.
Evolutionary trends in organ systems are apparent only in unicellular forms and absent in vertebrates.

Correct answer · Option 1

An organ like the heart consists of all four primary types of tissues: epithelial, connective, muscular, and neural.

In complex multicellular animals, an organ like the heart is composed of all four primary tissue types: epithelial, connective, muscular, and neural.