Support Systems in Animals(ch-3)<T/F>

Skeletons serve as main support systems in plants.

• T

• F

Answer explanation

Skeletons serve as main support systems for animals.

Zoologists recognize three types of skeletal systems in animals.

• T

• F

Hydrostatic skeletons are found in soft-bodies terrestrial and aquatic vertebrates.

• T

• F

Answer explanation

Hydrostatic skeletons are found in soft-bodies terrestrial invertebrates.

Jellyfish and squids are terrestrial invertebrates.

• T

• F

Answer explanation

Jellyfish and squids are soft-bodied aquatic invertebrates.

Fluid-filled body cavities in pseudocoelom give support by means of hydrostatic pressure on the body wall.

• T

• F

Answer explanation

Fluid-filled body cavities in coelom give support by means of hydrostatic pressure on the body wall.

An endoskeleton is a rigid, hard case that surrounds the body.

• T

• F

Answer explanation

An exoskeleton is a rigid, hard case that surrounds the body.

Arthropods have exoskeletons made of the polysaccharide chitin.

• T

• F

A chitinous exoskeleton provides attachment sites for the muscles which lie inside the endoskeletal casing.

• T

• F

Answer explanation

A chitinous exoskeleton provides attachment sites for the muscles which lie in exoskeletal casing.

Molting is the shedding of exoskeleton and the formation of larger new exoskeleton.

• T

• F

Endoskeletons are rigid internal skeletons that form the body’s framework.

• T

• F