The number of ciliated rows present in Comb jellies are

1. 8

2. 6

3. 4

4. 9

The function of flame cells are

1. Digestion and excretion

2. Attachment and osmoregulation

3. Anchorage and excretion

4. Excretion and osmoregulation

Presence of flame cells is a characteristic feature of

1. Nereis

2. Taenia

3. Hirudinaria

4. Pheretima

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

1. Flame cells

2. Malpighian tubules

3. Nephridia

4. Kidney

Nematocytes are present in

1. Adamsia

2. Hirudinaria

3. Sycon

4. Echinus

Which of the following is dioecious?

1. Taenia

2. Fasciola

3. Ascaris

4. Earthworm

Which of the following is called pearl oyster?

1. Dentalium

2. Pinctada

3. Pila

4. Aplysia

Radial symmetry is seen in

1. Mollusca

2. Chordata

3. Porifera

4. Ctenophora

Ancylostoma is also known as

(1) Pinworm

(2) Hookworm

(3) Flatworm

(4) Filarial worm

Chitinous exoskeleton is present in

1. Mollusca

2.  Echinodermata

3. Arthropoda

4. Porifera