The character that gives the Phylum Chordata is shown by:

1. A

2. B

3. C

4. D

The structure shown in the given diagram is characteristically seen in the Phylum:

1. Porifera

2. Ctenophora

3. Cnidaria

4. Molluska

An animal with the following body wall organization will not have:

1. Cephalization

2. Three germ layers

3. Bilateral symmetry

4. A complete digestive tract

Consider the following statements:

I. Platyhelminths are acoelomates and use protonephridia as excretory structures.

II. Aschelminthes are pseudocoelomates and have bilateral symmetry.

III. Adult echinoderms show radial symmetny and exhibit deuterostome type embryonic development.

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

Consider the following statements:

Chordates-

I. Possess a solid, single and ventral nerve cord

II. Have pharyngeal gill slits at some point during their development.

III. Have post-anal tail

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

Match each item in Column I with one item in Column Il and chose your answer from the codes given below:

Column I       Column II
(animal)        (phylum)
I. Loligo       1. Mollusca
II. Ophiura   2. Echinodermata
III. Beroe     3. Cnidaria
IV. Adamsia  4. Ctenophora

Codes:

  I II III IV

1. 1 2 3 4

2. 2 1 4 3

3. 2 1 3 4

4. 1 2 4 3

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

Match each item in Column I with one item in Column II and chose your answer from the codes given below.

Codes:

                I            II            III            IV

1.             1            2             3               4

2.             2            1             4               3

3.             2            1             3               4

4.             1            2             4               3

In case of poriferans, the spongocoel is lined with flagellated cells called

1. ostia

2. oscula

3. choanocytes

4. mesenchymal cells

Choose the correct statements.

1. All mammals are viviparous

2. All cyclostomes do not possess jaws and paired fins

3. All reptiles have a three-chambered heart

4. All Pisces have gills covered by an operculum