Mention any one characteristic feature of saprophytes.

Classify the following organisms based on the absence/presence of a true coelom (i.e., acoelomate, pseudocoelomate, and coelomate): $Spongilla$, $Sea \text{ } anemone$, $Planaria$, $Liver \text{ } fluke$, $Wuchereria$, $Ascaris$, $Nereis$, $Earthworm$, $Scorpion$, $Birds$, $Fishes$, $Horse$.

Elephantiasis is caused by

List out some common features in cat,rat and bat.

Find out the false statement.

Protochordates possess a notochord in larval forms. Appraise the use of this feature in these animals.