Ornithorhynchus is a

In which one of the following the genus name, its two characters and its class/phylum are correctly matched?

Bed Bugs contribute to the spread of

Annelids are called ______ worms.

Insect mouthparts are adapted for different functions in different species. Mouthparts of houseflies are used for

Earthworms eliminate cellular wastes and excess water through excretory tubules called ______.

Sharks, skates, and rays are also called ______ fishes.

In planarians water enters the body by ______.

A phenomenon when parasite parasitizes themselves is known as

Air bladder is present in