Nutrition in animals

Question 1

Heterotrophic nutrition

Answer 1

Process by which the organisms obtain nutrition by other organisms or by substances derived from them.

Question 2

Holozoic nutrition

Answer 2

Where they ingest food in to their alimentary canal.

Question 3

Main stages in holozoic nutrition

Answer 3

ingestion, digestion, absorption, assimilation and elimination/ Egestion

Question 4

What are the Feeding Mechanisms of animals

Answer 4

Filter feeders - bivalves

Fluid feeders - mosquitoes suck blood from humans, aphids suck phloem sap, bees and humming birds suck honey from flowers

Substrate feeders - leaf miner caterpillar living in soft tissues of plant, maggots (fly larvae)

Bulk feeders

Question 5

Bivalves

Answer 5

Clams and oysters
They belong to the phylum mollusca but radula is absent in them because they are filter feeders.

Question 6

Symbiosis

Answer 6

This is an ecological relationship between organisms of two different species that live closely together.

Question 7

3 types of symbiotic relationships

Answer 7

Mutualism
Parasitism
Commensalism

Question 8

Animal nutrition

Answer 8

Process by which food is taken in for make use in different body functions

Question 9

Mutalism

Answer 9

Cellulose digesting microorganisms in ruminants and termites

Question 10

Commensalism

Answer 10

Barnacles on whales

Question 11

Parasitism

Answer 11

Humans and lies
Tapeworm and humans