31. Which of the following is the largest group of mammals?
[A] Rodentia
[B] Chiroptera
[C] Carnivora
[D] Insectivora
Show Answer
Correct Answer: A [Rodentia]
Notes:
Rodentia is the largest group of mammals. Rodents are mammals of the rodent order. It is characterized by a pair of continuously moving incisors in each of the upper and lower jaws.
32. Which of the following belongs to the Order Pinnipedia?
[A] whale
[B] cow
[C] mole
[D] sea lion
Show Answer
Correct Answer: D [sea lion]
Notes:
Sealion belongs to the Order Pinnipedi. Sea lions are pinnipeds characterized by flapping outer ears, long foreflippers, the ability to walk around, short, thick hair, and a large chest.
33. Processed meat is meat that has been preserved?
[A] curing
[B] salting
[C] canning
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Processed meat is meat that has been preserved by curing, salting, smoking, drying or canning.
34. Which pigment is responsible for skin color?
[A] keratin
[B] melanin
[C] carotene
[D] None of these
Show Answer
Correct Answer: B [melanin]
Notes:
Skin color is derived from a pigment called melanin, which is synthesized in the epidermis. Skin color can range from very pale to very dark.
35. Bi-focal lenses are required to correct __
[A] astigmatism
[B] coma
[C] myopia
[D] presbyopia
Show Answer
Correct Answer: D [presbyopia]
Notes:
Bifocals are glasses that have both a correction for your distance vision on the top of the lens and a correction to help you read at the bottom.
36. In which part of the human body Thymus gland is located?
[A] Between both cerebrum
[B] Located above heart
[C] Behind Hypothalamus
[D] In throat
Show Answer
Correct Answer: B [Located above heart]
Notes:
The thymus gland is located above the heart, inside the chest cavity. It is important for the development of the T cell inside the body. It is largest in children and starts shrinking as you reach puberty and changes to fat.
37. What is the function of the Growth hormone?
[A] stimulates the lining of the uterus for fertilization
[B] stimulates the production and secretion of thyroid hormones
[C] stimulates contraction of uterus
[D] stimulates protein production
Show Answer
Correct Answer: D [stimulates protein production]
Notes:
Stimulates protein production is the function of the Growth hormone. Growth hormone is secreted by the Pituitary gland.
38. In most species, mitochondrial DNA is passed down from which of the following?
[A] DNA
[B] Mother and Father
[C] Father
[D] Mother
Show Answer
Correct Answer: D [Mother]
Notes:
In most of the species, mitochondrial DNA is passed down from Mother.
39. 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.
40. Which of the following initiates replication in DNA?
[A] DNA ligase
[B] Origin of replication
[C] Termination sequences
[D] Histone proteins
Show Answer
Correct Answer: B [Origin of replication]
Notes:
A chromosome contains the specific DNA sequence, called the origin of replication, which is responsible for initiating replication. DNA ligase is an enzyme. It helps in binding the DNA. Termination sequence is the site where DNA replication ends while histones are the proteins around which DNA is wound.
