Which of the following are correctly matched with respect to their taxonomic classification?
1. | Centipede, millipede, spider, scorpion-Insecta |
2. | House fly, butterfly, tsetse fly, silverfish-Insecta |
3. | Spiny anteater, sea urchin, sea cucumber- Echinodermata |
4. | Flying fish, cuttlefish, silverfish- Pisces |
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 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 |
3. (c)
4. (d)
1. | absence of true coelom but the presence of metamerism |
2. | presence of neither true coelom nor metamerism |
3. | presence of true coelom but the absence of metamerism |
4. | presence of true coelom and metamerism (metamerisation) |
Which one of the following has an open circulatory system?
1. Pheretima
2. Periplaneta
3. Hirudinaria
4. Octopus
Which of the following is not true about Porifera
1.Cellular level of organisation
2.Radial symmetry
3.Tissue is absent
4.Canal system is present
The minute pores in the body wall of the sponges is known as
1.spongocoel
2.Ostia
3.Osculum
4.Spicules
Water canal is lined by
1. Spongin fibres
2. Choanocytes
3. Collar cells
4. Both 2 and 3
Canal system in sponges helps in
1. Food gathering
2. Respiratory exchange
3. Removal of waste
4. All of the above
In sponges, digestion is
1.Intercellular
2.Intracellular
3.Both inter and inter cellular
4.Gastric cavity