31. Where do most of the digestive processes take place?
[A] Small intestine
[B] Large intestine
[C] Esophagus
[D] Rectum
Show Answer
Correct Answer: A [Small intestine]
Notes:
Most of the digestive processes take place in the Small intestine. The digestive system includes the mouth, pharynx (throat), esophagus, stomach, small intestine, large intestine, rectum, and anus. It also contains the salivary glands, liver, gallbladder, and pancreas, which make digestive juices and enzymes that help the body digest food and liquids.
32. Arrange the correct sequence of the steps involved in the process of the Human Digestive System?
[A] Digestion, Ingestion, Assimilation, Egestion and Absorption
[B] Ingestion, Digestion, Absorption, Assimilation and Egestion
[C] Egestion, Absorption, Digestion, Assimilation and Ingestion
[D] Assimilation, Absorption, Ingestion, Digestion and Egestion
Show Answer
Correct Answer: B [Ingestion, Digestion, Absorption, Assimilation and Egestion]
Notes:
Ingestion, Digestion, Absorption, Assimilation, and Egestion are the correct sequence of the steps involved in the process of the Human Digestive System.
33. Which of the following is used to absorb fluids and salts remaining after the completion of intestinal digestion and absorption and to mix its contents with a lubricating substance, mucus?
[A] Cecum
[B] Colon
[C] Rectum
[D] None of these
Show Answer
Correct Answer: A [Cecum]
Notes:
The cecum is used to absorb fluids and salts remaining after the completion of intestinal digestion and absorption and to mix its contents with a lubricating substance, mucus.
34. What happens when the luteinizing hormone increases?
[A] stimulates contraction of uterus
[B] ovaries to release eggs
[C] maintains milk production in breasts
[D] All of the above
Show Answer
Correct Answer: B [ovaries to release eggs]
Notes:
Ovaries release eggs when the luteinizing hormone increases.
35. The type of placenta found in humans is called __.
[A] Discoidal
[B] Cotyledonary
[C] Zonary
[D] Diffuse
Show Answer
Correct Answer: A [Discoidal]
Notes:
Placenta found in humans is called discoidal. It is a placenta in which the chorionic villi are arranged in a circular plate.
36. Which of the following are examples of harmful microbes?
[A] Streptococcus Pyogenes
[B] Escherichia Coli
[C] Pseudomonas Aeruginosa
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Streptococcus Pyogenes, Escherichia Coli, and Pseudomonas Aeruginosaare examples of harmful microbes. They can be transmitted through a variety of mediums in our bodies.
37. Which of the following is called Mendel’s first law of inheritance?
[A] Law of Dominance
[B] Law of Segregation
[C] Law of Independent Assortment
[D] All of the above
Show Answer
Correct Answer: A [Law of Dominance]
Notes:
The law of dominance is also called Mendel’s first law of inheritance. According to this, the hybrid offspring will only inherit the dominant trait in the phenotype.
38. The first transgenic crop was __
[A] Potato
[B] Brinjal
[C] Cotton
[D] Tobacco
Show Answer
Correct Answer: D [Tobacco]
Notes:
The first transgenic crop was Tobacco (a virus-resistance plant), which was developed in the year 1983.
39. Who among the following invented Bt cotton?
[A] Ernst Berliner
[B] James Black
[C] Erwin Chargaff
[D] Rachel Carson
Show Answer
Correct Answer: A [Ernst Berliner]
Notes:
Ernst Berliner invented Bt cotton. Genetically modified by the insertion of one or more genes from a common soil bacterium, Bacillus thuringiensis, known as Bt cotton.
40. The biological process in which both aerobes and anaerobes degrade organic matter is ____:
[A] Digesting
[B] Composting
[C] Manuring
[D] Nutrifying
Show Answer
Correct Answer: B [Composting]
Notes:
Composting is the depomposition of plant remains and other once-living materials to make an earthy, dark, crumbly substance that is excellent for enriching soil. It is the chief way to recycle wastes.
