: Biology (Page 2)
(Showing: 11 - 20 out of 65 MCQs)
General knowledge Biology Questions and Answers. Read these Biology quiz questions based on NCERT Book for SSC CGL 2016 Exam and other similar examinations.
11. Who discovered the Polio vaccine ?
Answer: B. Jonas Salk
Two polio vaccines are used throughout the world to combat poliomyelitis (or polio). The first was developed by Jonas Salk through the use of HeLa cells and first tested in 1952.
12. Insects responsible for transmitting diseases are called ?
Answer: C. Vector
A vector is any agent (person, animal or microorganism) that carries and transmits an infectious pathogen into another living organism.
13. Which animals may suffer from foot and mouth disease ?
Answer: D. Cattle,Sheep and pigs
Foot-and-Mouth Disease is a severe, highly communicable disease of cattle, pigs, sheep, goats and deer. It is caused by one of the smallest disease producing viruses known. There are several different strains of the virus that cause the disease. The strain now in England and Europe is harder on pigs and cattle but milder in sheep and goats. Humans do not catch the virus.
14. The primary source of carbohydrates are ?
15. Which one of the following is not a true fish ?
Answer: A. Starfish
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea.
16. What is "ALZHEIMER'S" disease ?
Answer: D. It is a disorder of the brain
Alzheimer's is the most common form of dementia, a general term for memory loss and other intellectual abilities serious enough to interfere with daily life. Alzheimer's disease accounts for 60 to 80 percent of dementia cases.
17. The function of Trypsin is to ?
Answer: B. Break down proteins
In the duodenum, trypsin catalyzes the hydrolysis of peptide bonds, breaking down proteins into smaller peptides.
18. Root nodules are commonly found in ?
Answer: A. leguminous plants
Root nodules occur on the roots of plants (primarily Fabaceae) that associate with symbiotic nitrogen-fixing bacteria. Under nitrogen-limiting conditions, capable plants form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia. This process has evolved multiple times within the Fabaceae, as well as in other species found within the Rosid clade.
19. Which is the largest living bird ?
Answer: A. Ostrich
The largest living bird, a member of the Struthioniformes, is the ostrich (Struthio camelus), from the plains of Africa and Arabia. A large male ostrich can reach a height of 2.8 m (9.2 ft) and weigh over 156 kg (345 lb). A mass of 200 kg (440 lb) has been cited for the ostrich but no wild ostriches of this massive weight have been verified.Eggs laid by the ostrich can weigh 1.4 kg (3 lb) and are the largest eggs in the world today.
20. Which is the chief nitrogenous waste in humans ?