See the following diagrams carefully and these animals are

1. Sycon, Leucosolenia

2. Hydra, Aurelia

3. Nereis, Hirudinaria

4. Fasciola, Taenia

Which of the following animals exhibit all these characters – bilateral symmetry, triploblastic, segmented and eucoelomate?

1.  Echinoderms

2.  Roundworms

3.  Molluscs

4.  Annelids

Which one of the following is not a characteristic of phylum-Annelida?

(1) Closed circulatory system

(2) Segmentation

(3) Pseudocoelom

(4) Ventral nerve cord

In the given table, some organisms are classified into categories. However, there is one exception. Select the option with correctly mentioned exceptional organism.

Annelids do not represent:-

1.  Circumpharyngeal nerve ring

2.  Longitudinal muscles in the gut

3.  Metameric segmentation

4.  Mesodermal pouches in body cavity

From the given statements which of the following
statement(s) is/are incorrect for Annelida?
a. Pseudometameric segmentation present
b. Coelomic fluid acts as a hydrostatic skeleton
c. They possess longitudinal and circular muscles
which help in locomotion
d. Neural system consists of paired ganglia connected
by lateral nerves to a single ventral nerve chord

1. a & b only

2. b & c only

3. a only

4. a & d only

Match each item in Column I with one item in Column II regarding and choose your answer from the codes given below :

What is true about Nereis, scorpion, cockroach and silver fish ? 
1. They all possess dorsal heart
2. None of them is aquatic
3. They all belong to the same phylum
4. They all have jointed paired appendages

Select the group of animals belonging to different phyla?

1.  Hirudinaria, Limulus, Laccifer.

2.  Nereis, Dentalium, Aplysia.

3.  Pheretima, Chaetopleura, Ophiura.

4.  Cucumaria, Anteadon, Loligo.

Which of the following structure is associated with
locomotion ?
(i) Parapodia.
(ii) Water vascular system.
(iii) Radula.
(iv) Proboscis.

1. (i), (ii), (iii), (iv) 

2. (i) only

3. (i), (ii) only

4. (i), (iii) only