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 |
Match the following
List-I | List-II | ||
(a) | Physalia | i. | Pearl oyster |
(b) | Limulus | ii. | Portuguese Man of War |
(c) | Ancylostoma | iii. | Living fossil |
(d) | Pinctada | iv. | Hookworm |
Choose the correct answer from the options given below:
Options: | (a) | (b) | (c) | (d) |
1. | ii | iii | iv | i |
2. | i | iv | iii | ii |
3. | ii | iii | i | iv |
4. | iv | i | iii | ii |
Match List - I with List - II
List-I | List-II |
(a) Metamerism | (i) Coelenterata |
(b) Canal system | (ii) Ctenophora |
(c) Comb Plates | (iii) Annelida |
(d) Cnidoblasts | (iv) Porifera |
Choose the correct answer from the options given below:
Options: | (a) | (b) | (c) | (d) |
1. | iii | iv | ii | i |
2. | iv | i | ii | iii |
3. | iv | iii | i | ii |
4. | iii | iv | i | ii |
Match the following genera with their respective phylum :
Column I | Column II | ||
(a) | Ophiura | (i) | Mollusca |
(b) | Physalia | (ii) | Platyhelminthes |
(c) | Pinctada | (iii) | Echinodermata |
(d) | Planaria | (iv) | Coelenterata |
Options: | (a) | (b) | (c) | (d) |
1. | iv | i | iii | ii |
2. | iii | iv | i | ii |
3. | i | iii | iv | ii |
4. | iii | iv | ii | i |
Metagenesis refers to?
1. | The presence of different morphic forms |
2. | Alternation of generation between asexual and sexual phases of an organism |
3. | Occurrence of a drastic change in the form during post-embryonic development |
4. | Presence of a segmented body and parthenogenic mode of reproduction |
Read the following statements.
(a) | Metagenesis is observed in Helminths. |
(b) | Echinoderms are triploblastic and coelomate animals. |
(c) | Round worms have organ-system level of body organization. |
(d) | Comb plates present in ctenophores help in digestion. |
(e) | Water vascular system is characteristic of Echinoderms. |
Choose the correct answer from the options given below:
1. (a), (d) and (e) are correct
2. (b), (c) and (e) are correct
3. (c), (d) and (e) are correct
4. (a), (b) and (c) are correct
Select the Taxon mentioned that represents both marine and freshwater species:
1. Echinoderms
2. Ctenophora
3. Cephalochordata
4. Cnidaria
List I | List II | ||
A. | Taenia | I. | Nephridia |
B. | Paramoecium | II. | Contractile vacuole |
C. | Periplaneta | III. | Flame cells |
D. | Pheretima | IV. | Urecose gland |
Options: | A | B | C | D |
1. | II | I | IV | III |
2. | I | II | III | IV |
3. | I | II | IV | III |
4. | III | II | IV | I |