Which of the following would be a characteristic of the animal shown in the given diagram?

             

1. Excretory organ is the proboscis gland.

2. They migrate for spawning to fresh water.

3. Notochord is present only in the larval tail.

4. Parapodia are present for swimming.

All cyclostomes are ___________ on some fishes; paired fins are _________, cranium is ________ and circulation is _______ type.

1. Ectoparasites, Absent, Cartilaginous, Open

2. Endoparasites, Present, Bony, Closed

3. Ectoparasites, Absent, Cartilaginous, Closed

4. Ectoparasites, Present, Cartilaginous, Open

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 animals exhibit all these characters – bilateral symmetry, triploblastic, segmented and eucoelomate?

1.  Echinoderms

2.  Roundworms

3.  Molluscs

4.  Annelids

The number of correct statements amongst the given statements is:

I. The digestive system in Platyhelminthes is incomplete.

II. Coelenterates, Ctenophores, and Echinoderm larvae are radially symmetrical.

III. Bilateral symmetry is seen in annelids and arthropods but not in mollusks.

IV. Notochord is a mesodermally derived structure formed on the dorsal side in some animals.

V. Aschelminthes are pseudocoelomates

 1.  2         

 2.  3

 3.  4         

 4.  5

The feature lacking in bony fishes would be:

Consider the following statements:
I. The members of Phylum Porifera are exclusively marine.
II. Ctenophores are the largest animals that use cilia for locomotion.
III. Roundworms may be free-living or parasitic in plants and animals.
Which of the above statements are true?
1. I and II only
2. I and III only
3. II and III only
4. I, II, and III

In contrast to Annelids, the Platyhelminths show:

1. Absence of body cavity

2. Presence of pseudocoel

3. Radial symmetry

4. Bilateral symmetry

Which of the following is not true about Porifera

1.Cellular level of organisation

2.Radial symmetry

3.Tissue is absent

4.Canal system is present