1. Chronic exposure to which among the following minerals/ salts in groundwater may cause Black-Foot Disease?
[A] Fluoride
[B] Nitrates
[C] Arsenic
[D] Lead
Show Answer
Correct Answer: C [Arsenic]
Notes:
Arsenicosis or Black foot is caused by exposure over a period of time to Arsenic in drinking water. It may also be due to intake of arsenic via food or air. Kindly note that Itai-itai disease is caused by Cadmium poisoning.
2. When the body’s immune system cells destroy the insulin producing beta cells of the pancreas is termed as ________?
[A] Type 1 diabetes
[B] Type 2 diabetes
[C] hybrid diabetes
[D] none of the above
Show Answer
Correct Answer: A [Type 1 diabetes]
Notes:
When the body’s immune system cells destroy the insulin producing beta cells of the pancreas is termed as Type 1 diabetes. Symptoms may include increased thirst, frequent urination, hunger, fatigue and blurred vision.
3. Which among the following has a fibrous root?
[A] Grass
[B] Mize
[C] Carrot
[D] Rice
Show Answer
Correct Answer: A [Grass]
Notes:
A fibrous root system is universal in monocotyledonous plants and ferns. It is the opposite of a taproot system and usually formed by thin, moderately branching roots growing from the stem. Fibrous root system is present in grass.
4. For which of the following diseases first successful vaccination was devloped (it is caused by Variola virus)?
[A] Cow pox
[B] Chicken pox
[C] Small pox
[D] Polio
Show Answer
Correct Answer: C [Small pox]
Notes:
Smallpox was an infectious disease caused by one of two virus variants, Variola major and Variola minor. the World Health Organization (WHO) certified the global eradication of the disease in 1980.
5. What is the average life of the Red Blood corpuscles?
[A] 100-120 days
[B] 120-140 days
[C] 80-95 days
[D] 70-85 days
Show Answer
Correct Answer: A [100-120 days]
Notes:
The average life of the Red Blood corpuscles is 100-120 days. Red blood cells are also known as red cells, red blood corpuscles, haematids, erythroid cells or erythrocytes.
6. Why do birds not experience respiratory issues while flying at high altitudes?
[A] Their lungs are larger relative to body size
[B] They fly inactively at high altitudes
[C] None of the above is correct
[D] Birds possess additional air sacs
Show Answer
Correct Answer: D [Birds possess additional air sacs]
Notes:
Birds have unique respiratory systems with extra air sacs that provide continuous airflow and efficient oxygen exchange, even at high altitudes where air is thinner. These adaptations help birds avoid respiratory trouble during flight.
7. 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.
8. Which of the following branches of Biology is not associated with snakes ?
[A] Herpetology
[B] Ophiology
[C] Serpentology
[D] Saurology
Show Answer
Correct Answer: D [Saurology]
Notes:
All of the three –Herpetology, Ophiology and Serpentology are associated to the study of snakes.While Saurology is associated to the study of Lizards. Thus Option [D] is correct.
9. Which of the following is not a feature of organisms in the class Mammalia ?
[A] milk producing mammary glands
[B] cells with a membrane-bounded nucleus
[C] dorsal hollow nerve chord
[D] chitin in the cell membrane
Show Answer
Correct Answer: D [ chitin in the cell membrane ]
Notes:
Organisms in the class Mammalia all have milk producing mammary glands; cells with a membrane-bounded nucleus and a dorsal hollow nerve cord. Chitin in Cell Walls is the feature of Kingdom fungi.
10. Which of the following micro-organism causes diseases like polio and chicken pox?
[A] Bacteria
[B] Protozoa
[C] Algae
[D] Virus
Show Answer
Correct Answer: D [Virus]
Notes:
Poliomyelitis or polio is an infection caused by the polio virus. It is a serious disease affecting a person’s brain and spinal cord. Chickenpox, also known as varicella, is a highly contagious disease caused by the initial infection with varicella zoster virus (VZV).
