Which of the following characteristics is mainly responsible for the diversification of insects on land:
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
Animal | Excretory organs | Excretory product | |
1. | Labeo (Rohu) | Nephridial tubes | Ammonia |
2. | Salamander | Kidney | Urea |
3. | Peacock | Kidney | Urea |
4. | Housefly | Renal tubules | Uric acid |
The figure shows four animals (a), (b), (c) and (d). Select the correct answer with respect to a common characteristic of two of these animals:
(a) | (b) | ||
(c) | (d) |
1. (c) and (d) have a true coelom
2. (a) and (d) respire mainly through body wall
3. (b) and (c) show radial symmetry
4. (a) and (b) have cnidoblasts for self-defence
1. | Arthropoda - The body is divided into a head, thorax, abdomen and respiration by mouth |
2. | Chordata - Notochord at some stage and separate anal and urinary openings to the outside |
3. | Echinodermata – Pentamerous radial symmetry and mostly internal fertilization |
4. | Mollusca - Normally oviparous and developed through a trochophore or veliger larva |
Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature?
Animals |
Morphological feature |
(a) Liver fluke, sea anemone, sea cucumber |
Bilateral symmetry |
(b) Centipede, prawn, sea urchin |
Jointed appendages |
(c) Scorpion spider, cockroach |
Ventral solid central nervous system |
(d) cockroach locust, Taenia |
Metameric segmentation |
1. a
2. b
3. c
4. d
Which one of the following pairs is mismatched?
1. | Pila globosa - pearl oyster | 2. | Apis indica- honey bee |
3. | Laccifer lacca- lac insect | 4. | Bombyx mori- silkworm |
What is true about Nereis, Scorpion, Cockroach, and Silverfish?
1. They all have jointed paired appendages
2. They all possess a dorsal heart
3. None of them is aquatic
4. They all belong to the same phylum