Sycon – Scypha; Spongilla - Fresh water sponge; Euspongia - Bath sponge; Physalia -Portuguese man-of-war; Adamsia - Sea anemone; Pennatula - Sea-fan |
Statement I: | Arthropoda is the largest phylum of Animalia. |
Statement II: | Mollusca is the second largest animal phylum. |
Statement III: | Ctenophora is the third largest animal phylum. |
1. | Statement I is correct; Statement II is correct; Statement III is incorrect |
2. | Statement I is correct; Statement II is correct; Statement III is correct |
3. | Statement I is correct; Statement II is incorrect; Statement III is incorrect |
4. | Statement I is incorrect; Statement II is correct; Statement III is incorrect |
I: | All members of Animalia are multicellular. |
II: | All members with triploblastic organisation have bilateral symmetry as adults. |
III: | Sponges are mostly radially symmetrical. |
IV: | An undifferentiated layer, mesoglea, is present in between the ectoderm and the endoderm in triplobalstic organisms. |
1. | Echinodermata | 2. | Porifera |
3. | Cnidaria | 4. | Mollusca |
A | B | C | |
1 | Pseudocoelomate | Acoelmate | Eucoelomate |
2 | Acoelmate | Pseudocoelomate | Acoelmate |
3 | Acoelmate | Pseudocoelomate | Eucoelomate |
4 | Acoelomate | Pseudocoelomate | Pseudocoelomate |
I: | Cnidoblasts |
II: | Triploblastic organisation |
III: | Well developed polyp stage in life cycle |
I: | The body is segmented metamerically. |
II: | The symmetry is bilateral and they have a true coelom |
I: | having radial symmetry in adults and larvae |
II: | having three germ layers |
III: | lacking a coelom |
I: | lacks a coelom |
II: | is triploblastic |
III: | is expected to have bilateral symmetry |
IV: | is expected to be dorso-ventrally flattened |