1. With which of the following diseases Project Kavach is related to?
[A] Malaria
[B] Dengue
[C] AIDS
[D] Swineflu
Show Answer
Correct Answer: C [AIDS]
Notes:
Project Kavach is related to AIDS. The AIDS virus can be transmitted through contact with infected blood, semen or vaginal fluids. Within a few weeks of HIV infection, flu-like symptoms such as fever, sore throat and fatigue can occur.
2. Which of the following plant growth hormone was recognized by Japanese scientists?
[A] Auxin
[B] Gibberellins
[C] Abscisic acid
[D] Cytokinin
Show Answer
Correct Answer: B [Gibberellins]
Notes:
Gibberellins, first recognized in 1926 by a Japanese scientist, Eiichi Kurosawa. He was studying foolish seedling disease in Rice called as bakanae
3. Which among the following is NOT a true bast fiber?
[A] Jute
[B] Hemp
[C] Flax
[D] Cotton
Show Answer
Correct Answer: D [Cotton]
Notes:
Please note that Bast Fibers are obtained from Phloem
4. A person with “Bombay Blood group” can receive blood from a person who is from____?
[A] A Group or B Group
[B] AB Group
[C] O Group
[D] None of them
Show Answer
Correct Answer: D [None of them]
Notes:
Bombay Blood Group is an extremely rare ABO group, called so because it was first discovered among some people in Bombay. Their red cells lack ABH antigens and their sera contain anti-A and anti-B and anti-H. The anti-H would not be detected in the ABO group but would be detectable in pretransfusion tests. People who have Bombay phenotype can donate to any member of the ABO blood group system (unless some other blood factor gene, such as Rhesus, is incompatible), but they cannot receive any member of the ABO blood group system`s blood (which always contains one or more of A and B and H antigens), but only from other people who have Bombay phenotype
5. What is the primary role of lipids in the body?
[A] provide energy for muscles and body processes
[B] maintain normal blood volume and normal water content in interstitial fluid
[C] extract waste from blood, balance body fluids, form urine
[D] produce certain proteins for blood plasma
Show Answer
Correct Answer: A [ provide energy for muscles and body processes]
Notes:
The primary role of lipids in the body is to provide energy for muscles and body processes.
6. Which one of the following is a useful functional association between fungi and the roots of higher plants?
[A] Mycorrhyza
[B] Lichen
[C] Root Nodules
[D] Cluster roots
Show Answer
Correct Answer: A [ Mycorrhyza]
Notes:
A Mycorrhyza is a composite organism consisting of a fungus (the mycobiont) and a photosynthetic partner (the photobiont or phycobiont) growing together in a symbiotic relationship.
7. Which among the following nitrogenous wastes requires the least water for its excretion?
[A] Ammonia
[B] Urea
[C] Nitrites
[D] Uric Acid
Show Answer
Correct Answer: D [ Uric Acid]
Notes:
Uric acid is not soluble in water and is excreted as a dry crystal by the animal’s digestive system. Ammonia is the most toxic nitrogenous waste and must be excreted in large volumes of water.
8. The vocal cords in men are about how many mm long?
[A] 40mm
[B] 20mm
[C] 10mm
[D] 30mm
Show Answer
Correct Answer: B [20mm]
Notes:
The vocal cord in women is about 15 mm long; in men vocal cords are about 20 mm long and children have very short vocal cords.
9. Which of the following clearly defines the meaning of Plankton? (UPSC Prelims 1982)
[A] A kind of fish
[B] A submerged platform in waters
[C] Drifting of organisms in a body of water
[D] A kind of animal living under water
Show Answer
Correct Answer: C [Drifting of organisms in a body of water]
Notes:
Planktons are very small plants and animals that float on the surface of the sea and on which other sea animals feed.
10. Mitochondrial DNA in an individual comes from which of the following sources? (UPSC Prelims 1991)
[A] Male parent
[B] Female parent
[C] Both parents
[D] Neither of the parents
Show Answer
Correct Answer: C [Both parents]
Notes:
Mitochondrial DNA is the small circular chromosome found inside mitochondria. The mitochondria, and thus mitochondrial DNA, are passed almost exclusively from mother to offspring through the egg cell. Electron microscopy reveals mitochondrial DNA in discrete foci.
