Introduction

Question 1

Mode of respiration depends upon

Answer 1

Habitat & level of organisation

Question 2

Phylum porifera coelenterata ctenophorA & platyhelminthes

Answer 2

Are mostly aquatic and hence use simple diffusion for uptake of o2

Question 3

Whereas endoparasites like platyhelminthes and aschelminthes have

Answer 3

No specific respiration organ

Question 4

Phylum annelid which includes earthworms

Answer 4

Use cutaneous respiration via moist skin/cuticle

Question 5

Phylum arthropoda

Answer 5

Terrestrial arthropoda which includes cockroach and grasshopper use tracheal systems( spiracles and tracheoles)

Aquatic arthropoda which includes prawns and crabs use gills/ctenicilia/bronchial respiration

Question 6

Phylum mollusca and phylum hemichordata are aquatic

Answer 6

Hence use gills for branchial respiration

Question 7

Subphylum vertebrata of phylum chordata includes
Pisces
Amphibians
Reptiles
Aves
Mammals

Answer 7

Pisces————gills
Amphibians—skin lung gills and bucopharangeal cavity
Reptiles———lungs
Aves————–lungs
Mammals——-lungs