Respiratory Systems in Insects and Fish

Question 1

Tracheal System
(insect)

Answer 1

Insects’ respiratory system delivering oxygen directly to organs via tubes

Question 2

Spiracle

Answer 2

Opening in insect exoskeleton allowing air entry with valves

Question 3

Tracheae

Answer 3

Tubes in insect respiratory system leading to tracheoles

Question 4

Tracheoles

Answer 4

Narrow tubes branching from tracheae for gas exchange

Question 5

Chitin Rings

Answer 5

Rigid rings in tracheae maintaining open structure

Question 6

Ventilation Mechanism in Insects

Answer 6

Process in active insects for rapid oxygen intake via spiracle closure and muscle movement

Question 7

Gills of Fish

Answer 7

Fish respiratory organs extracting oxygen from water

Question 8

Gill Arch

Answer 8

Part of fish gills attached to filaments for oxygen extraction

Question 9

Lamellae

Answer 9

Flattened cells covering capillary network in fish gills

Question 10

Counter-current System

Answer 10

System in fish gills maintaining oxygen concentration gradient

Question 11

Ventilation Mechanism in Fish

Answer 11

Process in fish pushing water over gills for oxygen extraction

Question 12

Buccal Cavity

Answer 12

Mouth cavity in fish involved in water intake for oxygen extraction

Question 13

Operculum

Answer 13

Tissue flap covering gills in fish, regulating water flow