11. At what age Wisdom teeth normally grow? (UPSC Prelims 1985)
[A] 34—40 years
[B] 12—15 years
[C] Late teens to early twenties
[D] 40—45 years
Show Answer
Correct Answer: C [Late teens to early twenties]
Notes:
Wisdom teeth are the third molars and usually begin erupting in the late teens or early twenties. Timing varies, and some remain impacted or never develop.
12. Oxygen transportation in a human body takes place through
I. Blood
II. Lungs
III. Tissue
The correct sequence of transportation is (UPSC Prelims 1997)
[A] I, II, III
[B] III, I, II
[C] II, I, III
[D] I, III, II
Show Answer
Correct Answer: C [II, I, III]
Notes:
The lungs serve to exchange the two gases in the blood. Oxygen enters the blood from the lungs and carbon dioxide is expelled out of the blood into the lungs. The blood serves to transport both gases. Oxygen is carried to the cells and tissues.
13. “Athlete’s Foot” is a disease caused by which of the following microorganisms? (UPSC Prelims 2001)
[A] Bacteria
[B] Fungus
[C] Protozoan
[D] Nematode
Show Answer
Correct Answer: B [Fungus]
Notes:
It is a member of the group of diseases known as tinea. Athlete’s foot is caused by a number of different fungi, including species of Trichophyton, Epidermophyton, and Microsporum. The condition is typically acquired by coming into contact with infected skin, or fungus in the environment.
14. What is Georgios Papanikolaou famous for?
[A] As an inventor of Odometer
[B] As an inventor of Pointed arch bridge
[C] As an inventor of Counterweight Trebuchet
[D] As an inventor of Pap smear test
Show Answer
Correct Answer: D [As an inventor of Pap smear test]
Notes:
Georgios Nikolaou Papanikolaou or George Papanicolaou was a Greek physician who was a pioneer in cytopathology and early cancer detection, and inventor of the “Pap smear test”.
15. Which of the following branch of biology deals with the study and rearing of grasses?
[A] Agrostology
[B] Agronomy
[C] Dendrology
[D] Phenology
Show Answer
Correct Answer: A [Agrostology]
Notes:
Agrostology, the branch of botany concerned with the study of grasses, especially their taxonomy.
16. Which of the following branch of biology deals with the cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants?
[A] Agriforestry
[B] Horticulture
[C] Arboriculture
[D] Forestry
Show Answer
Correct Answer: C [Arboriculture]
Notes:
Arboriculture is the cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants.
17. The study of living organisms in relation to other organisms and their environment is known as__?
[A] Ecology
[B] Evolution
[C] Ethology
[D] Ethnology
Show Answer
Correct Answer: A [Ecology]
Notes:
Ecology is a branch of science, which includes anthropology, population, community, ecosystem and biosphere. Ecology is the study of organisms, the environment, and how organisms interact with each other and with their environment.
18. Which of the following biologist is related to Cell Theory?
[A] Carl Linnaeus
[B] Theophrastus
[C] Theodor Schwann
[D] Francis Galton
Show Answer
Correct Answer: C [Theodor Schwann]
Notes:
The classical cell theory was proposed by Theodor Schwann in 1839. There are three parts to this theory. The first part states that all organisms are made up of cells. The second part states that cells are the basic units of life. The third part, which claims that cells come from pre-existing cells that have multiplied, was described by Rudolf Virchow in 1858.
19. Who gave the theory of Five King of Classification?
[A] RH Whittaker
[B] Ernest Haeckel
[C] Copeland
[D] Carolus Linnaeus
Show Answer
Correct Answer: A [RH Whittaker]
Notes:
The theory of Five Kingdom of classification (Monera, Protista, Fungi, Plantae and Animalia) is given by R. H. Whittaker in 1969.
20. What is the process in which material is ingested by the cells through the plasma membrane?
[A] Egestion
[B] Diffusion
[C] Osmosis
[D] Endocytosis
Show Answer
Correct Answer: D [Endocytosis]
Notes:
Endocytosis is the process in which the ingestion of material by the cells is carried out through the plasma membrane.
