31. The outermost layer of the ovary is made up of ___.
[A] simple cuboidal cells
[B] stereocilia
[C] stroma
[D] cilia
Show Answer
Correct Answer: A [simple cuboidal cells]
Notes:
Ovarian or germinal epithelium is the outermost layer of the ovary composed of simple cuboidal cells. It is actually a modified visceral peritoneum.
32. Which organ is affected by Japanese encephalitis?
[A] brain and spinal cord
[B] lungs
[C] liver and pancreas
[D] heart
Show Answer
Correct Answer: A [brain and spinal cord]
Notes:
The Brain and spinal cord organs are affected by Japanese encephalitis. This is a viral infection caused by infected mosquitoes in Asia and the western Pacific.
33. What disease is caused by paramyxovirus?
[A] measles
[B] parainfluenza virus
[C] respiratory syncytial virus
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Measles, mumps, croup, parainfluenza virus, and respiratory syncytial virus are caused by a paramyxovirus.
34. Which of these is not a biological agent that causes disease?
[A] Mycoplasma
[B] Virus
[C] Radiations
[D] Fungi
Show Answer
Correct Answer: C [Radiations]
Notes:
Radiations are not a biological agent that causes disease. Its physical agents cause disease along with electricity, pressure, heat, cold, etc.
35. Which one of the following endocrine gland is situated in the neck?
[A] Pituitary
[B] Thyroid
[C] Pancreas
[D] Adrenals
Show Answer
Correct Answer: B [Thyroid]
Notes:
The thyroid gland is one of the largest endocrine glands in the human body which is found in the neck. It controls how quickly the body uses energy, makes proteins, and controls how sensitive the body is to other hormones.
36. Which of the following is known as animal starch?
[A] Glycogen
[B] Cellulose
[C] Chitin
[D] Glucose
Show Answer
Correct Answer: A [Glycogen]
Notes:
Glycogen, the principal storage form of glucose in animal cells, sometimes called “animal starch” for its resemblance with starch found in plants. It is stored in liver and muscle cells and can be converted to glucose if needed. In the liver this conversion is regulated by the hormone glucagon.
37. In which of the following parts of the human digestive system is the digestion of food completed?
[A] Small intestine
[B] Large intestine
[C] Mouth
[D] Stomach
Show Answer
Correct Answer: A [Small intestine]
Notes:
Small intestine has three parts – duodenum, jejunum, and ileum. The maximum digestion of food takes place in the duodenum. While the digestion of food is completed in jejunum. The maximum absorption of food takes place in ileum.
38. The process of photosynthesis involves conversion of ____:
[A] Chemical energy into radiant energy
[B] Solar energy into chemical energy
[C] Chemical energy into mechanical energy
[D] Mechanical energy into solar energy
Show Answer
Correct Answer: B [Solar energy into chemical energy]
Notes:
Photosynthesis is the process by which light energy is converted into chemical energy by organisms. Carbon dioxide and water are the raw materials of this process. The light energy comes from the Sun and its end products are oxygen and glucose.
39. Who among the following scientists used the word Protoplasm first time for living cells?
[A] Purkinje
[B] Robert Hooke
[C] Leeuwenhoek
[D] Robert Brown
Show Answer
Correct Answer: A [Purkinje]
Notes:
The word “protoplasm” comes from the Greek protos for first, and plasma for thing formed, and was originally used in religious contexts. It was first used for living cells by J. E. Purkinje, a Czech anatomist and physiologist, in 1839. He used protoplasm for the fluid substance of a cell.
40. Who among the following is known as Father of Biology?
[A] Edward Jenner
[B] Darwin
[C] Aristotle
[D] Heckle
Show Answer
Correct Answer: C [Aristotle]
Notes:
Greek philosopher Aristotle is regarded as the Father of Biology. According to him, grouping of organisms had to be done on the basis of a number of characteristics and not just one. He is considered to be the first person to come up with a classification that still stands. His text ‘History of Animals’ is a landmark in the history of biology.
