11. Bulbil takes part in which of the following processes in plants?
[A] Sexual reproduction
[B] Respiration
[C] Food storage
[D] Vegetative reproduction
Show Answer
Correct Answer: D [Vegetative reproduction]
Notes:
Bulbil, also called bulblet, in botany, is a tiny secondary bulb that forms in the angle between a leaf and stem or in place of flowers on certain plants for vegetative reproduction. Bulbils, called offsets when full-sized, fall or are removed and planted to produce new plants.
12. What is study of fungus Known as?
[A] Mycology
[B] Phrenology
[C] Physiology
[D] Biology
Show Answer
Correct Answer: A [Mycology]
Notes:
Mycology is the branch of biology concerned with the study of fungi, including their genetic and biochemical properties, their taxonomy and their use to humans as a source for tinder, medicine, food, and entheogens, as well as their dangers, such as toxicity or infection.
13. In how many parts is the human brain divided?
[A] 2
[B] 4
[C] 3
[D] 5
Show Answer
Correct Answer: C [3]
Notes:
The brain has three main parts: the cerebrum, cerebellum and brainstem. Cerebrum: is the largest part of the brain and is composed of right and left hemispheres.
14. Which among the following is more required by the Growing children?
[A] Proteins
[B] Carbohydrates
[C] Vitamins
[D] All of these
Show Answer
Correct Answer: A [Proteins]
Notes:
Growing kids need protein to help them build and repair cells, enzymes, and hormones, and, as a last resort, to provide energy. Protein foods also help form new blood cells and body tissues, and they help the nervous system function properly.
15. Which one of the following approaches comes under the category of biotechnology? (UPSC Prelims 1993)
[A] Use of living organisms or substances obtained from them in industrial processes
[B] Modernizing the commercial industries to produce products for use in biological research
[C] Use of modern technology to investigate biological disorders
[D] Use of industrial technology to increase the biosphere
Show Answer
Correct Answer: A [Use of living organisms or substances obtained from them in industrial processes]
Notes:
The biotechnology industry uses bacterial cells for the production of biological substances that are useful to human existence, including fuels, foods, medicines, hormones, enzymes, proteins, and nucleic acids. Another area of biotechnology involves improvement of the qualities of plants through genetic engineering.
16. Which vitamin is also called as “Folic acid”?
[A] Vitamin B3
[B] Vitamin B6
[C] Vitamin B9
[D] Vitamin B12
Show Answer
Correct Answer: C [Vitamin B9]
Notes:
Vitamin B9 is also called as the folic acid. Folic acid is converted into folate in the human body. Folate is essential for making DNA and RNA.
Extra info: Folic acid /B9 is recommended to the pregnants to reduce the risk of Neural Tube Defects in the foetus.
17. Viral nucleocapsid is a combination of __?
[A] genome and capsid
[B] capsid and spikes
[C] envelope and capsid
[D] capsomere and genome
Show Answer
Correct Answer: A [genome and capsid]
Notes:
Viral nucleocapsid is a combination of genome and capsid. A virus is made up of a DNA or RNA genome inside a protein shell called a capsid.
18. Where does agar-agar come from?
[A] Gigartina
[B] Gelidium
[C] Gracillaria
[D] All the above
Show Answer
Correct Answer: D [All the above]
Notes:
Agar-agar is a jelly-like substance. It is a non-nitrogenous carbohydrate. It consists of two polysaccharides namely agarose and agaropectin. It is obtained from many red algae. For example, Gracilaria, Gelidium, Gigartinia.
19. Which of the following is a parasitic alga?
[A] Vaucheria
[B] Polysiphonia
[C] Cephaleuros
[D] Batrachospermum
Show Answer
Correct Answer: C [Cephaleuros]
Notes:
Cephaleuros is a genus of parasitic thalloid green algae. It includes about 14 species. Its common name is red rust.
20. 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.
