MCQ’S ON CLASS AMPHIBIA
1. Dicondylic skull along with ten pairs of cranial nerves is found in
(a) Mammalia
(b) Amphibia
(c) Reptilia
(d) Pisces
Answer: (b)
2. This about Class Amphibia is correct
(i) fertilization is internal
(ii) respiration is through gills only
(iii) body is divisible into head and trunk
(iv) heart is two chambered – one ventricle and one auricle
(a) only (i)
(b) only (iii)
(c) (i), (ii) and (iv)
(d) all are correct
Answer: (b)
3. A frog has
(a) jaws but no teeth
(b) eyes but no lids
(c) ears but no pinnae
(d) hands but no fingers
Answer: (c)
4. Even after attaining sexual maturity, larval characters are retained. It is known as
(a) Phylogenesis
(b) Neoteny
(c) Parthenogenesis
(d) Ontogenesis
Answer: (b)
5. Frogs dwell in water or in the vicinity of water as
(a) it respires through the skin
(b) it can see through its transparent eyelids whilst swimming
(c) its hindlimbs are webbed, facilitating to swim
(d) water is a good source for food
Answer: (a)
6. In amphibians, Organ of Jacobson is for
(a) temperature
(b) pressure
(c) smell
(d) sound
Answer: (c)
7. The differentiating factor of the venous system of frog and rabbit is in the presence of this
(a) hepatic vein
(b) three vena cavae
(c) renal portal system
(d) hepatic portal system
Answer: (c)
8. Neck is not found in a frog. This absence helps the frog to
(a) swim in water
(b) respire
(c) catch prey
(d) jump on ground
Answer: (d)
9. The body temperature of a frog is 20 degrees celsius in an environment having a temperature of 30 degrees celsius. The temperature of the frog in the new environment is
(a) 25 degrees celsius
(b) 20 degrees celsius
(c) 30 degrees celsius
(d) between 20-30 degrees celsius
Answer: (c)
10. This is not a true amphibian animal
(a) Toad
(b) Salamander
(c) Tortoise
(d) Frog
Answer: (c)
MCQ’S ON CLASS PISCES
1. A common trait between tadpole and fish is
(a) scales
(b) lateral line
(c) fins
(d) legs
Answer: (b)
2. This has a cartilaginous endoskeleton
(a) Bony fishes
(b) Mollusca
(c) Dipnoi
(d) Elasmobranch
Answer: (d)
3. True fishes have fins and gills. This is not a true fish
(a) Hippocampus – SeaHorse
(b) Hythalamictyes – Silver carp
(c) Carassius – Goldfish
(d) Lepisma – Silverfish
Answer: (d)
4. This fish shows dorsal fin modified into suckers
(a) Neoceratodus
(b) Hippocampus
(c) Echeneis
(d) Torpedo
Answer: (c)
5. This is a living fossil
(a) Lepidosiren
(b) Latimeria
(c) Lepidosteus
(d) None of these
Answer: (b)
6. This is a migratory fish
(a) Ribbon fish
(b) Carp
(c) Salmon
(d) Shark
Answer: (c)
7. The distinguishing factor between rays and sharks are
(a) type of tail fin
(b) position of gill slits
(c) position of mouth
(d) nature of their scales
Answer: (b)
8. Type of association between shark and suckerfish is
(a) Predation
(b) Parasitism
(c) Commensalism
(d) Symbiosis
Answer: (c)
9. Placoid scales are found in
(a) paleontological fishes
(b) lung fishes
(c) bony fishes
(d) cartilaginous fishes
Answer: (d)
10. This is a characteristic feature of fishes
(a) gills and epidermal scales
(b) tail and epidermal scales
(c) gills and venous heart
(d) venous heart and tail
Answer: (c)
