NEET UG BIOLOGY Multiple Choice Questions (MCQs)
NEET UG - Biology MCQs (Questions 31 to 45)
31. Which of the following is a type of connective tissue in animals?
a) Adipose tissue
b) Nervous tissue
c) Epithelial tissue
d) Muscular tissue
Answer: a) Adipose tissue
32. The basic unit of muscle contraction is:
a) Sarcolemma
b) Myofibrils
c) Sarcomere
d) Actin filament
Answer: c) Sarcomere
33. In the frog, which of the following organs is responsible for the exchange of gases in the body?
a) Heart
b) Skin
c) Lungs
d) Liver
Answer: b) Skin
34. Which of the following is the main function of the digestive system in the frog?
a) Absorption of nutrients
b) Removal of waste
c) Gas exchange
d) Hormone production
Answer: a) Absorption of nutrients
35. In the frog, the circulatory system is:
a) Open and incomplete
b) Closed and incomplete
c) Closed and complete
d) Open and complete
Answer: b) Closed and incomplete
36. The heart of the frog has how many chambers?
a) Two
b) Three
c) Four
d) Five
Answer: b) Three
37. Which of the following is the main function of the respiratory system in the frog?
a) Transport of oxygen to tissues
b) Removal of nitrogenous waste
c) Exchange of gases (oxygen and carbon dioxide)
d) Digestion of food
Answer: c) Exchange of gases (oxygen and carbon dioxide)
38. The nerve cord of a frog is:
a) Ventral and solid
b) Dorsal and hollow
c) Dorsal and solid
d) Ventral and hollow
Answer: b) Dorsal and hollow
39. The reproductive system in male frogs includes:
a) Ovaries
b) Testes and a pair of sperms
c) Testes and a pair of seminal vesicles
d) Seminal vesicles and oviducts
Answer: c) Testes and a pair of seminal vesicles
40. In the frog, the excretory system is responsible for the removal of:
a) Carbon dioxide
b) Urea and excess water
c) Oxygen
d) Minerals
Answer: b) Urea and excess water
41. Which of the following is the correct order of the digestive system in the frog?
a) Mouth → Stomach → Intestine → Rectum
b) Mouth → Esophagus → Stomach → Rectum
c) Mouth → Stomach → Rectum → Intestine
d) Mouth → Pharynx → Stomach → Intestine
Answer: d) Mouth → Pharynx → Stomach → Intestine
42. Which type of blood vessels carry oxygenated blood in the frog?
a) Arteries
b) Veins
c) Capillaries
d) Lymphatic vessels
Answer: a) Arteries
43. The skin of the frog serves which of the following functions?
a) Protection
b) Gas exchange
c) Osmoregulation
d) All of the above
Answer: d) All of the above
44. Which of the following parts of the frog's digestive system secretes digestive enzymes?
a) Liver
b) Stomach
c) Intestine
d) Pancreas
Answer: d) Pancreas
45. The frog's nervous system is primarily controlled by:
a) The brain
b) The spinal cord
c) The peripheral nerves
d) The cerebellum
Answer: a) The brain
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