31. What is the number of condyles in the skull of reptiles?
[A] one
[B] two
[C] three
[D] four
Show Answer
Correct Answer: A [one ]
Notes:
The number of condyles in the skull of reptiles is one. The skulls of reptiles are mostly made of bone tissue. Below the foramen, the magnum is present as a single occipital condyle. Thus, reptiles have a monocondylic skull.
32. Which part of the inner ear is responsible for the balance of the body?
[A] Incus
[B] Sacculus
[C] The organ of Corti
[D] Sacculus, Utriculus and semicircular canals
Show Answer
Correct Answer: D [Sacculus, Utriculus and semicircular canals]
Notes:
Sacculus, Utriculus, and semicircular canals part of the inner ear are responsible for the balance of the body.
33. How does food move through your digestive tract?
[A] By gravity
[B] By wavelike muscle contractions
[C] By cilia
[D] By chemical absorption
Show Answer
Correct Answer: B [By wavelike muscle contractions]
Notes:
Food moves through your digestive system by wave-like muscle contractions.
34. Salivary amylase is also known as __
[A] ptyalin
[B] trypsin
[C] lipase
[D] None of these
Show Answer
Correct Answer: A [ptyalin]
Notes:
Salivary amylase is also known as ptyalin. It breaks down starches into smaller, simpler sugars.
35. Which of the following is the place of development of the embryo?
[A] Uterus
[B] Fallopian tubes
[C] A pair of ovaries
[D] Vagina
Show Answer
Correct Answer: A [Uterus]
Notes:
The uterus is the place of development of the embryo. This is a hollow muscular organ located in the female pelvis between the bladder and rectum.
36. Which of the following is not a characteristic of pneumonia in animals?
[A] Inflammation of lungs
[B] Accumulation of mucus in alveoli
[C] Fever
[D] Easy breathing
Show Answer
Correct Answer: D [Easy breathing]
Notes:
Inflammation of the lungs, accumulation of mucus in alveoli, and fever are characteristics of pneumonia in animals.
37. Which is the driving force of evolution?
[A] Variation
[B] Mutation
[C] Extinction
[D] Adaptation
Show Answer
Correct Answer: A [Variation]
Notes:
Variation is the driving force of evolution. Genetic variation is the presence of differences in the sequences of genes between different organisms of a species.
38. The number of sex chromosomes in the zygote of humans is __
[A] 2
[B] 1
[C] 3
[D] 4
Show Answer
Correct Answer: A [2]
Notes:
The number of sex chromosomes in the zygote of humans is 2.
39. Which one of the following is the smallest endocrine gland in human body?
[A] Pancreas
[B] Thyroid
[C] Pituitary
[D] Adrenal
Show Answer
Correct Answer: C [Pituitary]
Notes:
Pituitary gland, called Master Gland, is the smallest endocrine gland. It controls the general growth of the body coordinating the functioning of other endo crime glands and stimulates the primary sex hormones, i.e. ovaries and testes.
40. The somatosensory receptors in human beings detect is ____:
[A] Hear
[B] Taste
[C] Touch
[D] Smell
Show Answer
Correct Answer: C [Touch]
Notes:
Somatosensory Receptor refers to a cell or group of cells specialized to detect changes in the environment and trigger impulses in the sensory nervous system. They are specialized to respond to a particular physical property, such as “touch,” “light,” or “temperature.” The somatosensory system is a part of the sensory nervous system.
