Q. No.In some Bilateria, the body is of many segments that show serial repetition of parts. Such segments are called as:
1. Myotomes
2. Metameres
3. Proglottides
4. Comb plates
The phylum with exclusively marine animals is:
1. Porifera
2. Cnidaria
3. Ctenophora
4. Platyhelminthes
Notochord is derived from embryonic:
| 1. | Ectoderm | 2. | Mesoderm |
| 3. | Endoderm | 4. | Ectoderm and Mesoderm |
Identify the phylum where the body cavity is not lined by mesoderm, instead, the mesoderm is present as scattered pouches between ectoderm and endoderm?
| 1. | Cnidaria | 2. | Platyhelminthes |
| 3. | Molluska | 4. | Aschelminthes |
What is present between ectoderm and endoderm in diploblastic animals?
| 1. | Mesenteron | 2. | Mesenchyme |
| 3. | Mesorchium | 4. | Mesoglea |
What is not true regarding Cnidarians?
| 1. | Body is made up of distinct tissues but true organs have not evolved |
| 2. | They are carnivores |
| 3. | They may have two body forms – polyps and medusa |
| 4. | The digestion is completely intra-cellular |
Identify the chordates in which the notochord persists in the adult?
(1) Tunicates
(2) Lancelets
(3) Cyclostomata
(4) Bony fishes
Which of the following is not a feature of Ctenophora?
1. Diploblastic organisms with tissue level of organization
2. Absence of Cnidocytes
3. Presence of internal ciliated comb plates
4. Bio-luminescence well marked in some members
In Amphibia:
| I. | Skin is moist without scales |
| II. | A tympanum represents the ear |
| III. | Fertilization is external |
| 1. | Only I and II are correct. |
| 2. | Only I and III are correct. |
| 3. | Only II and III are correct. |
| 4. | I, II, and III are correct. |
In which of the following animals, the body is cylindrical and is composed of an anterior proboscis, a collar, and a long trunk?
1. Hemichordates
2. Urochordates
3. Cephalochordates
4. Vertebrate chordates
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