The number of ciliated rows present in Comb jellies are

(1) 8

(2) 6

(3) 4

(4) 9

Nematocytes are present in

(1) Adamsia

(2) Hirudinaria

(3) Sycon

(4) Echinus

The function of flame cells are

(1) Digestion and excretion

(2) Attachment and osmoregulation

(3) Anchorage and excretion

(4) Excretion and osmoregulation

Ctenophorans are commonly referred to as

(1) Flatworms

(2) Comb jellies

(3) Sea anemone

(4) Cnidaria

Presence of flame cells is a characteristic feature of

(1) Nereis

(2) Taenia

(3) Hirudinaria

(4) Pheretima

Which of the following is called pearl oyster?

1. Dentalium

2. Pinctada

3. Pila

4. Aplysia

Which of the following is not an excretory structure found in invertebrates?

1. Flame cells

2. Malpighian tubules

3. Nephridia

4. Kidney

Radial symmetry is seen in

(1) Mollusca

(2) Chordata

(3) Porifera

(4) Ctenophora

Which of the following is dioecious?

(1) Taenia

(2) Fasciola

(3) Ascaris

(4) Earthworm