11. Which among the following is the name given to the ductless and secretory glands in the human body?
[A] Endocrine glands
[B] Exocrine glands
[C] Salivary glands
[D] None of the above
Show Answer
Correct Answer: A [Endocrine glands]
Notes:
Ductless glands which are also known as internally secreting glands or endocrine glands secrete their products or hormones directly into the blood stream in response to instructions from the brain.
12. Consider the following conditions of sick human body
1. Swollen lymph nodes
2. Sweating at night
3. Loss of memory
4. Loss of weight
Which of these are the symptoms of AIDS?
[A] 1 and 2
[B] 2, 3 and 4
[C] 1, 2 and 3
[D] 1, 2, 3 and 4
Show Answer
Correct Answer: D [1, 2, 3 and 4]
Notes:
AIDS is a viral disease. In this disease the immune system weakens and the body becomes prone to different type of infection by pathogens. Sweating at night, swollen lymph nodes, loss of memory and loss of weight are also symptoms of AIDS.
13. Which vitamin deficiency leads to Scurvy?
[A] Vitamin B3
[B] Vitamin C
[C] Vitamin K
[D] Vitamin B9
Show Answer
Correct Answer: B [Vitamin C]
Notes:
Vitamin C deficiency leads to scurvy. Symptoms of scurvy include gum bleeding, loose teeth, bulge in eyes.
14. Which branch of biology is known for the study of plant fossils?
[A] Paleobotany
[B] Morphology
[C] Lichenology
[D] Agronomy
Show Answer
Correct Answer: A [Paleobotany]
Notes:
Paleobotany is the scientific study of ancient plants using plant fossils found in sedimentary rocks.
15. Branch of science dealing with the medicinal plants is known as__?
[A] Pharmacognosy
[B] Pharmacology
[C] Phenology
[D] None of these
Show Answer
Correct Answer: A [Pharmacognosy]
Notes:
Pharmacognosy is the study of drugs or raw drugs produced from natural sources such as plants, microbes, and animals. It involves the analysis of their biological, chemical, biochemical and physical properties.
16. Who was awarded the Nobel Prize in Medicine for the discovery of Human Immunodeficiency Virus?
[A] Françoise Barré-Sinoussi
[B] Luc Montagnier
[C] Both 1 & 2
[D] None of these
Show Answer
Correct Answer: C [Both 1 & 2]
Notes:
Françoise Barré-Sinoussi and Luc Montagnier were awarded the Nobel Prize in Medicine for the discovery of Human Immunodeficiency Virus in 2008.
17. Which of the following possesses the characteristics of both plants and animals?
[A] Azolla
[B] Lycopodium
[C] Euglena
[D] Sphagnum
Show Answer
Correct Answer: C [Euglena
]
Notes:
Euglena is an example of the Protista kingdom and has both plant and animal characteristics.
18. Which of the following give maximum energy after breaking down?
[A] Fat
[B] Sugar
[C] Carbohydrate
[D] Protein
Show Answer
Correct Answer: A [Fat]
Notes:
Fat gives maximum energy after breaking down, fat is composed of essential carbon and hydrogen atoms releasing 9.1 calories per gram of energy.
19. The process by which ammonia is converted into nitrate is__?
[A] Nitrogen-fixation
[B] Ammonification
[C] Denitrification
[D] Nitrification
Show Answer
Correct Answer: D [Nitrification]
Notes:
The Process by which ammonia is converted into nitrate is called Nitrification. It can be done in two steps that involve Nitrite formation and Nitrate formation.
20. What is the shape of enveloped viruses?
[A] icosahedral
[B] helical
[C] roughly spherical
[D] complex
Show Answer
Correct Answer: C [roughly spherical]
Notes:
The shape of enveloped viruses is roughly spherical. Enveloped virus have glyco-protein spikes that arise from their envelopes.
