Assertion (A): | Platyhelminthes are commonly known as flatworms |
Reason (R): | They have a dorso-ventrally flattened body |
1. | Both (A) and (R) are true and (R) is the correct explanation for (A) |
2. | Both (A) and (R) are true but (R) is not the correct explanation for (A) |
3. | (A) is true, (R) is false |
4. | (R) is true (A)is false |
Column-I | Column-II | ||
a. | Planaria | (i) | Indirect development |
b. | Ctenoplana | (ii) | Gills are covered by an operculum on each side |
c. | Petromyzon | (iii) | Possess high regeneration capacity |
d. | Exocoetus | (iv) | Migrates for spawning to freshwater |
(a) | Statocysts are balancing organs present in aquatic insects such as prawn |
(b) | Mollusca is the 2nd largest phylum of animal kingdom which includes Limulus |
(c) | Insects are bilaterally symmetrical, triploblastic, segmented and coelomate animals |
(d) | Molluscs have segmented body with a distinct head, muscular foot and visceral hump |
(e) | In all echinoderms, digestive system is complete with mouth on the dorsal side and anus on the ventral side |
Column -I | Column-II | ||
A. | Protochordates | (i) | Homoiothermous |
B. | Aves | (ii) | Circular mouth without jaws |
C. | Agnatha | (iii) | Exclusively marine |
D. | Pisces | (iv) | Streamlined body and bear fins |
A | B | C | D | |
1. | (i) | (ii) | (iv) | (iii) |
2. | (iii) | (i) | (ii) | (iv) |
3. | (iv) | (i) | (iii) | (ii) |
4. | (iv) | (iii) | (ii) | (i) |
Column I | Column II | ||
(a) | Ancylostoma | (i) | Monoecious |
(b) | Fasciola | (ii) | Sexual dimorphism |
(c) | Ctenoplana | (iii) | Brain coral |
(d) | Meandrine | (iv) | Only sexual reproduction is present |
Column-I | Column-II | ||
A. | Vipera | (i) | Oil gland at the base of the tail |
B. | Columba | (ii) | Heterodont dentition |
C. | Scoliodon | (iii) | Crawling mode of Locomotion |
D. | Panthera | (iv) | Pelvic fins bear claspers in males |
Column-I | Column-II | ||
a. | Euspongia | (i) | Liver fluke |
b. | Fasciola | (ii) | Bath sponge |
c. | Ophiura | (iii) | Hagfish |
d. | Myxine | (iv) | Brittle star |
a | b | c | d | |
1. | (i) | (ii) | (iii) | (iv) |
2. | (ii) | (iv) | (iii) | (i) |
3. | (ii) | (i) | (iv) | (iii) |
4. | (iv) | (iii) | (ii) | (i) |
List I | List II | ||
(a) | Hydra | (i) | Cuttlefish |
(b) | Sepia | (ii) | Gregarious pest |
(c) | Wuchereria | (iii) | Freshwater polyp |
(d) | Locusta | (iv) | Filarial worm |
a. | Metagenesis is observed in all coelenterates. |
b. | Echinoderms are exclusively marine, triploblastic, and monoecious animals. |
c. | Roundworms are coelomates with complete digestive tract. |
d. | Comb plates present in ctenophores help in locomotion. |
e. | Water canal system is a characteristic of sponges. |