Q. No.Select the Taxon mentioned that represents both marine and freshwater species:
1. Echinoderms
2. Ctenophora
3. Cephalochordata
4. Cnidaria
Planaria possess a high capacity of:
1. metamorphosis
2. regeneration
3. alternation of generation
4. bioluminescence
A marine cartilaginous fish that can produce electric current is:
1. Pristis
2. Torpedo
3. Trygon
4. Scoliodon
One of the representatives of the phylum Arthropoda is:
1. Silverfish
2. Pufferfish
3. Flying fish
4. Cuttlefish
In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remaining three are correct?
| Genus Name | Two Characters | Phylum | ||
| 1. | Pila | (i) (ii) |
Body segmented Mouth with Radula |
Mollusca |
| 2. | Asterias | (i) (ii) |
Spiny skinned Water Vascular System |
Echinodermata |
| 3. | Sycon | (i) (ii) |
Pore bearing Canal system |
Porifera |
| 4. | Periplaneta | (i) (ii) |
Jointed appendages Chitinous exoskeleton |
Arthropoda |
One example of animals having a single opening to the outside that serves both as mouth as well as the anus is:
1. Octopus
2. Asterias
3. Ascidia
4. Fasciola
| 1. | Male frog – a copulatory pad on the first digit of the hind limb |
| 2. | Female cockroach – anal cerci |
| 3. | Male shark – claspers borne on pelvic fins |
| 4. | Female Ascaris – sharply curved posterior end |
In which one of the following the genus name, its two characters and its class/phylum are correctly matched?
| Genus | Two Characters | Class/phylum |
| (a) Salman dra | (i) A tympanum represents ear (ii) Fertilisation is external |
Amphibia |
| (b) Pteropus | (i) Skin possesses hair (ii) Oviparous |
Mammalia |
| (c) Aurelia | (i) Cnidobles (ii) organ level of Organisation |
Coelenterata |
| (d) Ascaris | (i) Body segmented (ii) Males and Female distinct |
Annelida |
2. (b)
3. (c)
4. (d)
| 1. | Chordata – possess a mouth provided with an upper and a lower jaw |
| 2. | Chondrichthyes – possess cartilaginous endoskeleton |
| 3. | Mammalia – give birth to young ones |
| 4. | Reptilia – possesses 3-incomplete heart with one incompletely divided ventricle. |
Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct?
| 1. | Penguin is homoiothermic while the remaining three are poikilothermic |
| 2. | Leech is a freshwater form while others are marine |
| 3. | Songilla has special collared cells called choanocytes, not found in the remaining three |
| 4. | All are bilaterally symmetrical |
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