Q. No.Some salient features and phyla of organisms are given below. Select the option which shows the correct combination of organism, its phylum and salient features.
1. Hydra
Coelenterata
Bilateral symmetry
Cnidoblasts present
2. Planaria
Platyhelminthes
Bilateral symmetry
High regeneration capacity
3. Ancylostoma
Annelida
Bilateral symmetry
Elongated and worm shape
4. Octopus
Mollusca
Radial symmetry
External skeleton of shell present
Select the correct statement regarding reproduction.
| 1. | Mating in dogs is synchronised with lunar cycle. |
| 2. | Salamanders always have internal fertilisation. |
| 3. | In Trygon, the male introduces sperms into female through a modified pelvic fin. |
| 4. | Catla has internal fertilisation. |
Select the option that correctly matches characteristic features with the group of three animals.
| 1. | Skeleton of spicules | − Sycon, Adamsia, Spongilla |
| 2. | Excretion by flame | − Taenia, Fasciola, Ancylostoma |
| 3. | Mouth contains radula | − Dentalium, Octopus, Ophiura |
| 4. | Jointed appendages | − Limulus, Apis, Laccifer |
Gemmule formation is a common mode of asexual reproduction in
(1) Paramecium
(2) Hydra
(3) sponges
(4) yeast
Identify the incorrect match from those given below
|
(1) |
Jelly fish |
Aurelia |
Scyphozoa |
|
(2) |
Paddle worm |
Chaetopterus |
Polychaeta |
|
(3) |
Cray fish |
Oniscus |
Crustacea |
|
(4) |
Acorn worm |
Balanoglossus |
Enteropneusta |
Which of the following is common among mammals?
| 1. | They do not moult |
| 2. | They have seven cervical vertebrae |
| 3. | They are carnivores |
| 4. | They have ventral nerve cord |
Water transport system or canal system is a characteristic feature of which animal?
| 1. | Spongilla |
| 2. | Hydra |
| 3. | Asterias |
| 4. | Echinus |
Collar cells are present in the members of which phyla
| 1. | Echinodermata | 2. | Coelenterata |
| 3. | Ctenophora | 4. | Porifera |
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