Parasites are organisms which take nutrition from other living things. Discover the life cycle of parasites, from tapeworms to cuckoos.
- Parasites live on, or inside, another species and gain nourishemnt from them.
- Parasites have complex lifecycles, using host species in order to gain entry to another, e.g. the malaria parasite uses the mosquito to travel between human hosts.
- Parasites can affect the health and behaviour of their host.
- Parasites must tread a careful balance - taking the nourishment they need without killing their host.
In every ecosystem there are parasites, organisms that live on, or inside another species, causing them harm.
Gain nourishment from another species
Some parasites live on the surface of their host – like head lice that live and feed on the scalp.
And fleas that feed by sucking blood.
Others live inside their ...
Please log in to view and download the complete transcript.