Biology MCQ Quiz Hub

1. Which one of the following statements is incorrect?
Viviparity is the reproductive pattern shown by most mammals
Viviparity occurs primarily in salamanders and caecilians.
In viviparity, a shell does not form around the egg.
Viviparity is not found in species of lizards and snakes.

2. Which one of the following statements is stated incorrectly regarding cartilaginous fishes?
Cartilaginous fishes have sense organs.
Most cartilaginous fishes have color vision.
Teeth-like placoid scales are found on the skin of cartilaginous fishes.
In cartilaginous fishes, gas exchange occurs in the gills.

3. Which statement is correct regarding reptiles, birds, and mammals?
Evolved from a common ancestor
Embryos are surrounded by a fluid-filled sac called amnion
Outer covering is largely watertight.
All of the above

4. Which one of the following characteristics is NOT a shared by birds and mammals?
A backbone and internal skeleton
Breathing using lungs
Viviparity
Warm blooded nature

5. Which one of the following statements is incorrect?
Radial symmetry is displayed by sea anemone and aquatic animal.
Fasciola hepatica is also known as the sheep liver fluke.
Triploblastic animals are usually bilaterally symmetrical
Mesoglea is present in between ectoderm and endoderm in Obelia

6. Which one of the followings belongs to platyhelminthes?
Plasmodium
Trypanosoma
Schistosoma
Wuchereria

7. Radial symmetry is generally exhibited by which animals?
Which are attached with substratum
Which have one opening of alimentary canal
Which have ciliary feeding
Which are aquatic

8. Tachyglossus is a connecting link between
Reptiles and Birds
Amphibians and Reptiles
Birds and Mammals
Reptiles and Mammals

9. The scientific name of Asian tiger mosquito
Aedes aegypti
Aedes albopictus
Aedes taeniorhynchus
Aedes albolineatus

10. Water-Vascular system is found in
Sea-anemone
Sea-pen
Sea-cucumber
Sea-horse

11. Cell tissue grade of organization occurs in
Platyhelminthes
Sponges
Protozoa
Coelenterata

12. Swarming generally occurs in
Pyrilla
Mosquito
House fly
Locust

13. Animals having a built in thermostat to maintain constant body temperature are known as
Biothermic
Poikilothermic
Oligothermic
Homeothermic

14. Which one of the followings in birds indicates their reptilian ancestry?
Eggs with a calcareous shell
Scales on their hind limbs
Four-chambered heart
Two special chambers crop and gizzard in their digestive tract

15. ______ are devoid of respiratory, excretory and circulatory organs.
Threadworms
Sponges
Tapeworms
Liver fluke

16. Order Rhynchocephalia consists of
Tuataras
Lizards and snakes
Turtles and tortoises
Crocodiles, alligators, caimans

17. Cnidarians having cells called cnidocytes, contain organelles known as ______.
Polymorphism
Nematocysts
Hermaphroditism
None of these

18. The metamorphosis of insects appears to be regulated through
Thyroxine
Haemolymph
Ecdysone
All the above

19. Which one of the following is oviparous?
Elephant
Flying fox
Platypus
Whale

20. Cold-blooded animals fall into which category?
Ectotherms
Psychrotherms
Endotherms
Thermophiles

21. Radula is found in
Pila sp.
Chiton sp.
Lamellidens sp.
Pinctada sp.

22. Cysticercus stage is formed in
Taenia
Plasmodium
Leishmania
Wuchereria

23. One example of animals having a single opening to the outside that serves both as mouth as well as anus is
Fasciola
Octopus
Asterias
Ascidia

24. Ornithorhynchus is an example of :
Dinosaur
Monotreme mammal
Marsupial mammal
Eutherian mammal

25. Phylogenetic classification is based on
External similarity
Common evolution
Habit and habitat
Utilitarian system

26. Radial symmetry occurs in which set?
Echinodermata and Coelenterata
Porifera and Coelenterata
Mollusca and Arthropoda
Platyhelminthes and Coelenterata

27. Taxonomically a species is
A group of evolutionary related populations
Population having same evolutionary basis
Fundamental unit is phylogenetic history of organisms
Category to which most taxonomic information is attached

28. Insect mouthparts are adapted for different functions in different species. Mouthparts of houseflies are used for
Siphoning
Piercing and sucking
Sponging and lapping
Biting and chewing

29. Earthworms eliminate cellular wastes and excess water through excretory tubules called ______
Nephridia
Flame cells
Coelom
Gizzard

30. In many animals the rapid change from the immature organism to the adult (change from larva to adult in insects) means
Cephalization
Molting
Metamorphosis
Endothermy

31. Sharks, skates, and rays are also called ______ fishes.
Jawless
Bony
Cartilaginous
Freshwater

32. In planarians water enters the body by ___
osmosis
contractile vacuoles
flame cells
active transport

33. Animals, floating and drifting on the surface of water are ______.
Benthos
Pelagic
Plankton
Neritic

34. A phenomenon when parasite parasitizes themselves is known as
Hyperparasitism
Parasitoids
Monoxenous parasitism
Polyxenous parasitism

35. Air bladder is present in
Chondrichthyes
Star fishes
Actinopterygii
Flying fishes

36. All flat worms differ from all round worms in having
Triploblastic body
Solid mesoderm
Bilateral symmetry
Metamorphosis in the life history

37. Which one of the following is NOT a characteristic of phylum Annelida?
Ventral nerve cord
Closed circulatory system
Segmentation
Pseudocoelom

38. Phylum mollusca can be distinguished from other invertebrates by the presence of
Bilateral symmetry and exoskeleton
A mantle and gills
Shell and non-segmented body
A mantle and non-segmented body

39. In cephalopod, the brain is formed from the fusion of ______
Spinal cord
Ganglia
Eye tissue
Trochophore

40. Fluke infections are diseases of the _______ in humans.
Blood
Bile
Digestive tract
Lungs

41. Radial symmetry is usually associated with
lower grade of organization
creeping mode of life
aquatic life
sedentary mode of life

42. Male mosquitoes usually feed on
Garbage
Human blood
Flower sap
All of the above

43. Ichthyophis is a
Worm blooded
Limbless reptile
Mammal
Limbless amphibian

44. Pupa occurs in the life cycle of
Blatta
Mosquito
Housefly
Periplaneta

45. Pneumatic bones are expected to be found in
Flying fish
Whale
Tadpole of frog
Pigeon

46. Peripatus is a connecting link between
Coelenterata and Porifera
Ctenophora and Platyhelminthes
Mollusca and Echinodermata
Annelida and Arthropoda

47. The osculum is an excretory structure in
Star fish
Hydra
Silver fish
Sponge

48. Ornithorhynchus is a
fossil bird
flightless bird
connecting link between reptiles and birds
mammal

49. Bed Bugs contribute to the spread of
Typhoid
Yellow fever
Typhus
Trench fever

50. Annelids are called ______ worms.
Parasitic
Segmented
Flat-bodied
Acoelomate