31. Ostrich belongs to which of the following order?
[A] Struthioniformes
[B] Casuariformes
[C] Apterygiformes
[D] Procellariiformes
Show Answer
Correct Answer: A [Struthioniformes]
Notes:
Ostrich belongs to the Struthioniformes order. This group includes non-flying running Aves of about 2 meters in height.
32. Milk glands are found in which of the following class?
[A] All vertebrates
[B] All mammals
[C] All placental mammals
[D] All prototherians
Show Answer
Correct Answer: B [All mammals]
Notes:
Milk glands are found in all mammals. Mammals feed their young through milk secreted by the milk glands.
33. The bone around the nose contains hollow, air-filled chambers known as __
[A] Sinuses
[B] Turbinates
[C] Mucus Membrane
[D] Septum
Show Answer
Correct Answer: A [Sinuses]
Notes:
Sinuses are the bone around the nose that contains hollow, air-filled chambers. Mucus from the sinuses flows into the nasal cavity.
34. Our sense of smell also helps us to recognize which of the following?
[A] tastes
[B] temperature
[C] environment
[D] time
Show Answer
Correct Answer: A [tastes]
Notes:
Our sense of smell also helps us to recognize tastes.
35. Which of the following diseases is caused by protozoa?
[A] Whooping cough
[B] Amoebic dysentery
[C] Measles
[D] Athlete’s foot
Show Answer
Correct Answer: B [Amoebic dysentery]
Notes:
Amoebic dysentery diseases are caused by the protozoan parasite Entamoeba histolytica.
36. The smallest unit of genetic material that produces a phenotypic effect on mutation is called?
[A] Muton
[B] Gene
[C] Recon
[D] Nucleic acid
Show Answer
Correct Answer: A [Muton]
Notes:
The smallest unit of genetic material that produces a phenotypic effect on mutation is called Muton.
37. A process in which earthworms convert organic waste into manure rich in high nutritional content is called
[A] Farmyard manure
[B] Bio Compost
[C] Vermicomposting
[D] Green manure
Show Answer
Correct Answer: C [Vermicomposting]
Notes:
A process in which earthworms convert organic waste into manure rich in high nutritional content is called Vermicomposting.
38. Which of the following makes the skin layer impervious to water?
[A] Melanin
[B] Collagen
[C] Keratin
[D] Chitin
Show Answer
Correct Answer: C [Keratin]
Notes:
Keratin is a family of fibrous structural proteins involved in making up the outer layer of human skin. It is also the key structural component of hair and nails. Cells in the epidermis contain a structural matrix of keratin, which makes this outermost layer of the skin almost waterproof, and along with collagen and elastin, gives skin its strength. It also makes up fish scales and crustacean shells, bird feathers and beaks, animal horns and hooves.
39. Lungs are the primary organs of ____:
[A] Digestion
[B] Respiration
[C] Constipation
[D] Perspiration
Show Answer
Correct Answer: B [Respiration]
Notes:
The lungs are the primary organs of respiration in humans and many other animals including a few fish and some snails. Their function in the respiratory system is to extract oxygen from the atmosphere and transfer it into the bloodstream, and to release carbon dioxide from the bloodstream into the atmosphere, in a process of gas exchange.
40. The large carnivores are also called ____:
[A] Tertiary consumers
[B] Primary consumers
[C] Secondary consumers
[D] None of the above
Show Answer
Correct Answer: A [Tertiary consumers]
Notes:
A carnivore is an organism that mostly eats meat, or the flesh of animals. Carnivores that eat herbivores are called secondary consumers, and large carnivores that eat other carnivores are called tertiary consumers. Animals and people who eat both animals and plants are called omnivores. Sometimes carnivores are also called predators.
