11. Poliomyelitis is an epidemic virus infection. Which of the following is responsible for it? (UPSC Prelims 1985)
[A] Rhabdo virus
[B] Entero virus
[C] Dengue virus
[D] Mumps virus
Show Answer
Correct Answer: B [Entero virus]
Notes:
Poliovirus is known as the prototypical enterovirus. It can cause a subclinical or mild illness, aseptic meningitis, or paralytic poliomyelitis. It is a disease that has been eradicated in the United States and other developed countries. Coxsackie virus infection is the most common cause of viral heart disease.
12. Which of the following is/are found in plant cells but not in those of animals? (UPSC Prelims 1987)
[A] Plastid & Cellular wall
[B] Chromosome
[C] Mitochondria & Golgi apparatus
[D] Cell wall & lysozyme
Show Answer
Correct Answer: A [Plastid & Cellular wall]
Notes:
Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, which are not found within animal cells.
13. Which one among the following is not a good source of nutritional calcium? (UPSC Prelims 2006)
[A] Rice
[B] Ragi
[C] Skimmed milk
[D] Egg
Show Answer
Correct Answer: B [Ragi]
Notes:
Ragi contains only 344 mg of calcium and in 100 gm of ragi protein is 7.3 gm., fat 1.3 gm, fibre 3.6 gms, carbohydrates 72 gms, moisture 13.1 gm.
14. Deficiency in which among the following leads to beriberi disease?
[A] Vitamin B1
[B] Vitamin B2
[C] Vitamin B3
[D] Vitamin B6
Show Answer
Correct Answer: A [Vitamin B1]
Notes:
Vitamin B1/Thiamine deficiency leads to a disease called beriberi. Over polishing of rice also leads to beriberi.
15. Which of the following is studied in Ethnobotany?
[A] Practical use of plants by local culture and people
[B] Relations between Plants and peoples Behvaior
[C] Comparison of different plants in a particular area
[D] Study of relations of plants, animals and animals in an area
Show Answer
Correct Answer: A [Practical use of plants by local culture and people]
Notes:
Ethnobotany is the study of the plants of an area and their practical uses through the traditional knowledge of a local culture and people.
16. Where is the genetic system located in prokaryotes?
[A] nucleoid
[B] chromatin
[C] nuclear material
[D] all of these
Show Answer
Correct Answer: D [all of these]
Notes:
The genetic system located in prokaryotes in nucleoid, chromatin and nuclear material.
17. Which of the following is an example of agarophytes?
[A] Dictyota
[B] Fucus
[C] Nostoc
[D] Gelidium
Show Answer
Correct Answer: D [Gelidium]
Notes:
Gelidium thalloid is a species of red algae. It includes 134 species. Its members are known by many common names.
18. Covered smut of Sorghum is caused by which of the following?
[A] Sphacelotheca sorghi
[B] Sphacelotheca cruenta
[C] Sphacelotheca reiliana
[D] Tolyposporium ehrenbergii
Show Answer
Correct Answer: A [Sphacelotheca sorghi]
Notes:
Sporisorium sorghi is a fungus in the family of Ustilaginaceae. It is a plant pathogen that causes the covered scum of sorghum.
19. Dicotyledonous branches are found in which of the following?
[A] Fern
[B] Funaria
[C] Liverworts
[D] Marchantia
Show Answer
Correct Answer: C [Liverworts]
Notes:
Dicotyledonous branches are found in Liverworts. Liverworts are also moss-like land plants that do not have a vascular system.
20. What makes the main difference between pteridophytes and bryophytes?
[A] Spermatozoids
[B] Archegonia
[C] Separate gametophytes
[D] conducting system
Show Answer
Correct Answer: D [conducting system]
Notes:
The main difference between bryophytes and pteridophytes is that the former do not have vascular tissue whereas the latter have vascular tissue.
