21. Which lobe of human brain is associated with hearing?

1. Frontal lobe
2. Parietal lobe
3. Temporal lobe
4. Occipital lobe

Option “3” is correct.
Temporal lobe of human brain is associated with hearing and are related to smell, taste and short- term memory.
22. In mammals, an important role of excretion is played by________.

1. Large intestine
2. Kidneys
3. Lungs
4. Liver

Option “2” is correct.
In mammals, an important role of excretion is played by Kidney. Kidney extract waste from blood , balance body fluid from urine.
23. Eustachian Tube is located in which part of human body?

1. Nose
2. Ear
3. Eyes
4. Throat

Option “2” is correct.
The Eustachian tube, also known as the auditory tube or pharyngotympanic tube, is a tube that links the nasopharynx to the middle ear. It is a part of the middle ear.
24. Which part of the brain plays an important role in motor control?

1. Cerebellum
2. Cerebrum
3. Medulla
4. Pons

Option “1” is correct.
The cerebellum is a region of the brain that plays an important role in motor control. It may also be involved in some cognitive functions such as attention and language, and in regulating fear and pleasure responses, but its movement-related functions are the most solidly established. The cerebellum does not initiate movement, but it contributes to coordination, precision, and accurate timing.
25. ‘Agronomy’ deals with __________

1. Animals rearing
2. Crop production and soil management
3. Fruit production
4. None of these

Option “2” is correct.
Agronomy is a branch of agriculture dealing with field-crop production and soil management..
26. The connective tissue that connects a muscle to a bone is-

1. Cartilage
2. Ligament
3. Tendon
4. Interstitial fluid

Option “3” is correct.
A tendon or sinew is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension.
27. Blood group was discovered by-

1. Alexander Fleming
2. William Harvey
3. Landsteiner
4. Paulov

Option “3” is correct.
Karl Landsteiner discovered the blood group .
28. People with Down’s syndrome invariably affected by:

1. Huntington’s disease
2. Alzheimer’s disease
3. Meningitis
4. Brain haemorrhage

Option “2” is correct.
The best-known and most common chromosome abnormality in humans is Down’s syndrome, a condition associated with an extra chromosome 21. Down’s syndrome individuals also almost invariably develop Alzheimer’s disease, a form of dementia that is fairly common among the elderly.
29. Normal blood pressure reading of an adult human:

1. 80/140 mm Hg
2. 120/80 mm Hg
3. 130/90 mm Hg
4. 160/95 mm Hg

Option “2” is correct.
According to the American Heart Association (AHA) normal blood pressure is a systolic pressure of less than 120 millimeters of mercury (mm Hg) and a diastolic pressure of more than 80 mm Hg, or 120/80 mm Hg.
30. ‘Red Data Book’ provides an account of-

1. Endangered plants only
2. Fossil plants
3. Endangered plants and animals
4. Extinct animals only

Option “3” is correct.
The Red Data Book is the state document established for documenting rare and endangered species of animals, plants and fungi as well as some local sub-species that exist within the territory of the state or country.
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