Q. No.Pinworm, Hookworm and Filaria worm belong to:
1. Annelida
2. Platyhelminthes
3. Aschelminthes
4. Arthropoda
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
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. |
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
Identify the chordates in which the notochord persists in the adult?
(1) Tunicates
(2) Lancelets
(3) Cyclostomata
(4) Bony fishes
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 |
What is present between ectoderm and endoderm in diploblastic animals?
1. Mesenteron
2. Mesenchyme
3. Mesorchium
4. Mesoglea
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
Notochord is derived from embryonic:
1. Ectoderm
2. Mesoderm
3. Endoderm
4.Ectoderm and Mesoderm
The phylum with exclusively marine animals is:
1. Porifera
2. Cnidaria
3. Ctenophora
4. Platyhelminthes
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