Mock Test-1 (Paper-1) (Question 51-100)

Total Questions: 50

41. Which of the following plants produce only seeds but no fruit?

Correct Answer: (c) Cycas
Solution:The production of naked seeds or ovules without fruits is one of the main characteristic features of Gymnosperms. Cycas sp. is a gymnosperm.

42. My stems are succulent, my leaves are mostly thick. In which category of the following vegetation type. I am largely found?

Correct Answer: (c) Tropical thorn forest and scrubs
Solution:These characteristics are found in Tropical thorn forest and scrubs. Leaves are modified into spines (thorns). The stems are succulent to conserve water

43. Book lungs occur in

Correct Answer: (c) arachnids
Solution:Book lungs occur in Arachnids.

44. Bowman capsule is found in

Correct Answer: (b) Kidneys
Solution:Bowman capsule is found in kidneys. It takes part in filtration of blood. It is a cup like structure.

45. Quinine is obtained from which part of the plant?

Correct Answer: (d) Bark
Solution:Quinine is a natural white crystalline alkaloid obtained from the bark of Cinchona sp. of family Rubiaceae. It has antimalarial, analgesic (painkilling), and anti-inflammatory and antipyretic (fever-reducing) properties.

46. Consider the following statements:

1. Camphor

2. Chicory

3. Vanilla

Which of the above is/are correct plant product?

Correct Answer: (d) 1, 2 and 3
Solution:Camphor is a waxy, flammable, white or transparent solid with a strong aromatic odour. Cinnamomum camphora is the source of camphor. Vanilla is a flavour obtained from the orchid of the genus Vanilla, generally from Mexican Vanilla planifolia.

Chicory is a root extract or roots of Cichorium intybusis used commercially as a substitute for coffee.

47. Diabetes mellitus takes place only when

Correct Answer: (d) β-cells of pancreas are in hypo
Solution:Three types of cells are found in pancreas. a-cells, b-cells, d-cells. a-cells secrete peptide hormone glucagon. b-cells synthesise and secrete the endocrine hormone, insulin, the hyposecretion of which leads to abnormal metabolism of body's sugar and causes Diabetes mellitus. d-cells produce somatostatin.

48. Consider the following statements:

1. Hepatitis-B is several times more infectious than HIV/AIDS.

2. Hepatitis-B can cause liver cancer.

Which of the statements given above is/are correct?

Correct Answer: (c) Both 1 and 2
Solution:Hepatitis-B is a potentially life-threatening liver infection caused by the hepatitis B virus. It can cause chronic liver disease and puts people at high risk of death from cirrhoris of liver and liver cancer.

Hepatitis-B virus is transmitted between people by contact with blood or other body fluid of an contact with the blood or other body fluid.

49. Which fertilizer is assimilated directly by the plant?

Correct Answer: (b) Nitrolim

50. Consider the following statements with respective to Marburg virus

1. It is a highly fatal virulent disease that causes hemorrhagic fever, with bats as vectors.

2. It belongs to the same family as the Nipha virus.

3. There is no human to human transmission reported so far.

Which of the statement(s) given above is/are incorrect?

Correct Answer: (c) 2 and 3 only
Solution:Marburg virus
  • It is in the same family as the virus that causes Ebola virus disease.
  • Human infection with Marburg virus disease initially results from prolonged exposure to mines or caves inhabited by Rousettus bat colonies.
  • Marburg can spread through human-to-human transmission via direct contact (through broken skin or mucous membranes) with the blood, secretions, organs or other bodily fluids of infected people, and with contaminated surfaces & materials.
  • Two large outbreaks that occurred simultaneously in Marburg and Frankfurt in Germany, and in Belgrade, Serbia, in 1967, led to the initial recognition of the disease.
  • There have been 12 major Marburg outbreaks since 1967, mostly in southern and eastern Africa.