Which of the following characteristics is mainly responsible for the diversification of insects on land:
Which of the following represents the correct combination without any exception?
Characteristic | Class |
(a) Mammary gland; hair on body; pinnae; two pairs of limbs | Mammalia |
(b) Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord | Chondrichthyes |
(c) Sucking and circular mouth; jaws absent; integument without scales; paired appendages | Cyclostomata |
(d) Body covered with feathers; skin moist and glandular; lungs with air sacs; forelimbs from wings | Aves |
1. | a | 2. | b |
3. | c | 4. | d |
Match the name of the animal (column I), with one characteristic (column II), and the phylum/class
(column III) to which it belongs:
Column I | Column II | Column II | |
1. | Ichthy ophis | terrestrial | Reptilia |
2. | Limulus | body covered by chitinous exoskeleton | Pisces |
3. | Adamsia | radially symmetrical | Porifera |
4. | Petromyzon | ectoparasite | Cyclostomata |
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
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