Q. No.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
Fragmentation is a method of asexual repoduction in
(1) Annelida
(2) Platyhelminthes
(3) Aschelminthes
(4) Porifera
Gemmule formation is a common mode of asexual reproduction in
(1) Paramecium
(2) Hydra
(3) sponges
(4) yeast
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 |
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.
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 |
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 |
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