1. | Echinodermata D | 2. | Ctenophora |
3. | Hemichordata | 4. | Coelenterata |
A: | Presence of a mid-dorsal, solid and double nerve cord. |
B: | Presence of closed circulatory system. |
C: | Presence of paired pharyngeal gill slits |
D: | Presence of dorsal heart. |
E: | Triploblastic pseudocoelomate animals. |
1. | C, D and E only | 2. | A, C and D only |
3. | B and C only | 4. | B, D and E only |
List-I | List-II | ||
(A) | Contractile vacuole | (I) | Asterias |
(B) | Water vascular system | (II) | Amoeba |
(C) | Canal system | (III) | Spongilla |
(D) | Flame cells | (IV) | Taenia |
Options: | (A) | (B) | (C) | (D) |
1. | (IV) | (II) | (I) | (III) |
2. | (I) | (III) | (II) | (IV) |
3. | (III) | (II) | (I) | (IV) |
4. | (II) | (I) | (III) | (IV) |
A: | Platyhelminthes are triploblastic, pseudocoelomate and bilaterally symmetrical organisms. |
B: | Ctenophores reproduce only sexually and fertilization is external. |
C: | In tapeworm, fertilization is internal but sexes are not separate. |
D: | Ctenophores are exclusively marine, diploblastic and bioluminescent organisms. |
E: | In sponges, fertilization is external and development is direct. |
1. | (A), (C) and (D) only | 2. | (B), (C) and (D) only |
3. | (A) and (E) only | 4. | (B) and (D) only |
Statement I: | All members of Animalia are multicellular. |
Statement II: | All members of Animalia have at least a tissue grade of organisation. |
I: | Four pairs of gills covered by an operculum on each side |
II: | Skin covered with placoid scales |
III: | Regulation of buoyancy by an air bladder |
I: | Annelids are metamerically segmented animals with a true coelom. |
II: | Arthropods are the most abundant group of animals characterised by the presence of jointed appendages. |
III: | Molluscs have a soft body surrounded by an external calcareous shell. |
IV: | Echinoderms possess a spiny skin. |
V: | Hemichordates are fresh water animals. |