11th class (FSc) Biology Unit 12 MCQs
26. Rodents are:
a. Carnivores
b. Herbivores
c. Omnivores
d. Detritivores
27. The length of Jejunum is about:
a. 1.4 m
b. 2.8 m
c. 2.4 m
d. 2 m
28. Some bacteria break down the proteins of dead plants and animals and release:
a. Nitrates
b. Potassium
c. Oxygen
d. Phosphorus
29. Which of the following is not and omnivore?
a. Pig
b. Crow
c. Bear
d. None of these
30. The animals having large canine teeth for catching and tearing the prey are called:
a. Detritivores
b. Carnivores
c. Fluid feeders
d. Herbivores
31. Which of the following is fluid feeder?
a. Sheep
b. Aphid
c. Man
d. Earthworm
32. Canines are missing in:
a. Omnivores
b. Carnivores
c. Humans
d. Herbivores
33. Many humans become ill from consuming milk and milk products because they lack:
a. Lactase
b. Bacteria in their intestines
c. Hydrochloric acid
d. Renin
34. Digestion in hydra and planaria takes place within its:
a. Gastro vascular cavity
b. Coelom
c. Mouth
d. Alimentary canal
35. Mucus in saliva in made of:
a. Phospholipids
b. Glycolipids
c. Saturated fatty acids
d. Glycoproteins
36. The structure in the mouth that prevent food from entering the nasal cavities is the:
a. Tongue
b. Epiglottis
c. Pharynx
d. Soft palate
38. The one in which only intracellular digestion occurs:
a. Amoeba
b. Cockroach
c. Hydra
d. Planaria
39. HCL is secreted by gastric gland’s cells of stomach.
a. Parietal cells
b. Mucous cells
c. Zymogene cells
d. Chief cells
40. Liver secretes bile into:
a. Duodenum
b. Ileum
c. Jejunum
d. Stomach
41. If the absorption of water and salt does not take place due to infection, drug action or emotional disturbance, a condition known as:
a. Dyspepsia
b. Diarrhea
c. Anotexia
d. Vomiting
42. The process of taking in foods is:
a. Absorption
b. Digestion
c. Assimilation
d. Ingestion
43. Dipeptides are broken down into amino acids by:
a. Trypsin
b. Erypsin
c. Lipase
d. Pepsin
44. The human stomach is situated below the:
a. Kidneys
b. Diaphragm
c. Spleen
d. Liver
45. In amoeba digestion is:
a. Intracellular
b. Extracellular
c. Both a and b
d. No digestion and extracellular
46. pH of fresh saliva is about:
a. 8.0
b. 6.0
c. 9.0
d. 7.0
47. In cockroach the partially digested food is stored up:
a. Crop
b. Rectum
c. Colon
d. Gizzard
48. In hydra, ectodermal cells got food from endodermal cells by:
a. Facilitated diffusion
b. Osmosis
c. Diffusion
d. Active transport
49. The enzyme which is not secreted by pancreas:
a. Enterokinase
b. Trypsin
c. Lipase
d. Amylase
50. A sphincter muscle present at the end of ileum that opens and closes time to time to allow a small amount of residue to enter the large intestine:
a. Ileocolic sphincter
b. Cardiac sphincter
c. Anal sphincter
d. Pyloric sphincter