11. Which vitamin is also called as riboflavin?
[A] Vitamin B1
[B] Vitamin B2
[C] Vitamin B3
[D] Vitamin B6
Show Answer
Correct Answer: B [Vitamin B2]
Notes:
Vitamin B2 is also called as riboflavin. Chemical formula of vitamin B2 is C17H20N4O6.
12. 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”.
13. Phaeophyceae is commonly known as which of the following algae?
[A] Green Algae
[B] Brown Algae
[C] Red Algae
[D] Blue Algae
Show Answer
Correct Answer: B [Brown Algae]
Notes:
Brown algae, which include the class Phaeophyceae, are a large group of multicellular algae, which includes many seaweeds located in cold waters within the Northern Hemisphere. Brown algae are the major seaweeds of temperate and polar regions.
14. Which phylum does the salamander belong to?
[A] Mollusca
[B] Amphibians
[C] Reptiles
[D] Mammals
Show Answer
Correct Answer: B [Amphibians]
Notes:
Those organisms which can live on both land and water are called amphibians. Some examples of amphibians are frogs and toads, newts, salamanders and caecilians.
15. Gonyaulax, which are known for causing red tides, belong to which of the following?
[A] Algae
[B] Fungi
[C] Protista
[D] Bacteria
Show Answer
Correct Answer: C [Protista ]
Notes:
Red tides are caused by Gonyaulax which are small, microscopic organisms that grow in water and also called dinoflagellates.
16. What is an enzyme?
[A] Acid
[B] Base
[C] Salt
[D] Catalyst
Show Answer
Correct Answer: D [Catalyst]
Notes:
Enzyme is a protein. It acts as a catalyst in living organisms, and controls the rate of chemical reactions inside the body.
17. Which of the following is milk sugar?
[A] Glucose
[B] Maltose
[C] Fructose
[D] Lactose
Show Answer
Correct Answer: D [Lactose]
Notes:
Lactose is known as milk sugar, and it is found in the milk of many mammals including humans and cows. Lactose is a disaccharide consisting of one unit of galactose and one unit of glucose.
18. Which of the following oncogenic virus was first detected?
[A] Rous sarcoma virus
[B] Epstein-Barr virus
[C] Herpes simplex virus type 2
[D] Human T cell leukaemia virus
Show Answer
Correct Answer: A [Rous sarcoma virus]
Notes:
Rous sarcoma virus(RSV) was discovered in 1911 by Peyton Rous.
19. What are the characteristics of gymnosperms?
[A] naked seeds
[B] separate female and male gametes
[C] pollination by wind, and tracheids
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
The characteristics of gymnosperms are naked seeds, separate female and male gametes, pollination by wind, and tracheids.
20. Which of the following is a heterotrophic plant?
[A] Parasitic
[B] Insectivorous
[C] Symbiotic
[D] All of these
Show Answer
Correct Answer: D [All of these]
Notes:
Heterotrophic plants which are mainly classified on the basis of their mode of nutrition are parasites, insect eaters, mortal, symbiotic.
