Respiratory System

1.    The tracheal system of an insect is best described as:

A network of hollow tubes

A method of anaerobic respiration

A chain of interconnecting cells

A radial pattern of filaments

 

2.   Which structure is NOT part of an insect's tracheal system?

Sinus

Taenidia

Spiracle

Tracheole

 

3.   What structures regulate air flow into and out of the tracheal system?

Ostia

Taenidia

Spiracles

Tracheoles

 

4.   The tracheal tubes are filled with:

Hemolymph

Water and salts

Cytoplasm

Atmospheric air

 

5.   Taenidia prevent the respiratory system from:

Filling with water in aquatic insects

Collapsing under external pressure

Transporting carbon dioxide to body tissues

Losing wter by evaporation

 

6.   Which statement about the insect respiratory system is CORRECT?

Oxygen moves through the trachea by active transport

Oxygen diffuses through the walls of the air sacs

Tracheoles deliver oxygen to every cell of the body

The spiracles are found along the midline of the back

 

7.   Movement of oxygen in the tracheal system is:

Mostly due to diffusion

Assisted by contraction of the tracheoles

Retarded by air sacs

Faster in the abdomen than in the throax

 

8.   Gills allow aquatic insects to utilize oxygen that is:

Dissolved in the surrounding water

Trapped in the tissues of aquatic plants

Located in the air overhead

Generated by metabolic activity

 

9.   An insect with tracheal gills would probably be found in:

An oceanic community

A stagnant pond

A sewage treatment lagoon

A cold mountain stream

 

10.   Which statement about an air store (bubble) is INCORRECT?

It is a physical gill that extracts oxygen from water

The bubble gets smaller as the insect uses up oxygen

Oxygen eventually replaces all of the nitrogen that diffuses out of the bubble

Insects must eventually surface to replenish the air in the bubble