How many of the given statements are correct for cyclostomes?
I: All living members are ectoparasites on some fishes.
II: They have an elongated body bearing 6-15 pairs of gill slits for respiration.
III: They have a sucking and circular mouth without jaws.
IV: Their body has scales and paired fins.
V: Circulation is of open type.
VI: Cyclostomes are fresh water animals but migrate for spawning to marine water.
1. 3
2. 4
3. 5
4. 6
Subtopic:  Phylum Chordata |
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Identify the incorrectly matched pair:

Animals Feature present in both
1. Balanoglossus and Pinctada Open circulatory system
2. Branchiostoma and Ascidia Persistent notochord
3. Aplysia and Pheretima True coelom
4. Gorgonia and Pennatula Cnidoblasts
Subtopic:  Phylum Chordata |
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Select the option which shows the correct matching of animal with excretory organs and excretory product:
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
Subtopic:  Phylum Arthropoda | Phylum Chordata |
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Diagrams (A, B, C and D) of four different animals are given below. Which one of the following option identifies the animal, its phylum and one of its characters correctly ?
  

Animal Phylum Character
B Rana Amphibia 3 – chambered heart
C Asterias Echinodermata Water canal system
A Aurelia Coelenterata Cnidoblast cells
D Naja Chordata Non-poisonous snake


1. B
2. C
3. A
4. D

Subtopic:  Phylum Coelenterata | Phylum Echinodermata | Phylum Chordata | Study of Amphibians |
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