OR 03-70 RINGED WORMS

Their body is separated into
1. regular links
2. irregular links
3. head, thorax and abdomen
The most beautiful of polychaetes is
1. bearded fireworm
2. sea mouse
3. common earthworm
Transmission of sexual cells is made easier by
1. collar
2. spermatophore
3. only mucus
On the lower side of stones in the shore part of the sea lives
1. bearded fireworm
2. sea mouse
3. common earthworm
Great importance by hoeing and aerating of the soil has...
1. common earthworm
2. bearded fireworm
3. sludge worm
In the decomposing mud of backwater occurs...
1. sludge worm
2. common earthworm
3. sea mouse
It sucks the fish blood
1. fish leech
2. horse leech
3. eight-eyed leech
Collar (ring) appears by:
1. common earthworm
2. sludge worm
3. sea mouse
Leeches live mainly
1. in fresh water
2. in salt water
3. on land
Ringed worms need for their life:
1. moist environment
2. dry environment
3. water environment