1. Beriberi is a result of deficiency of which of the following?
[A] Riboflavin
[B] Thaimine
[C] Pyridoxine
[D] Cobalamine
Show Answer
Correct Answer: B [Thaimine]
Notes:
Vitamine B (Thiamine) deficiency produces beriberi, Wernicke-Korsakoff syndrome, and optic neuropathy.
Beriberi is a neurological and cardiovascular disease. The three major forms of the disorder are dry beriberi, wet beriberi, and infantile beriberi. Dry beriberi is characterized principally by muscular dysfunctions, while Wet beriberi is associated with mental confusion, muscular atrophy, edema. Infantile beriberi occurs in infants breast-fed by thiamin-deficient mothers.
2. Which among the following function as locus of biochemical reactions?
[A] Cell plasma
[B] Cell membrane
[C] Cell walls
[D] None of the above
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Correct Answer: B [Cell membrane]
Notes:
The cells membranes hold enzymes of sequential reactions in close proximity
3. A four chambered heart is found in which of the following?
[A] mammals only
[B] mammals and fish
[C] mammals & Birds
[D] mammals and Amphibians
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Correct Answer: C [mammals & Birds]
Notes:
Archosaurs (crocodilians and birds) and mammals show complete separation of the heart into two pumps, for a total of four heart chambers;
4. Which among the following correctly denotes Net Reproduction Rate?
[A] Average number of children that would be born to a woman over her lifetime
[B] Average number of children that would be born to a couple over their life time
[C] Birth Rate — Death rate
[D] The rate at which women are replaced by daughters who will have children
Show Answer
Correct Answer: D [The rate at which women are replaced by daughters who will have children]
Notes:
In population ecology and demography, the net reproduction rate is defined as the average number of offspring that would be born to a female if she passed through her fertility age. Or simply The rate at which women are replaced by daughters who will have children.
5. Which among the following vitamins is involved in the breakdown of energy molecules such as glucose?
[A] Vitamin A
[B] Vitamin B
[C] Vitamin C
[D] Vitamin D
Show Answer
Correct Answer: B [Vitamin B]
Notes:
Vitamin B is involved in the breakdown of energy molecules such as glucose. Vitamin B are a class of water-soluble vitamins which play an important role in cell metabolism.
6. What name has been given to the fear of crossing roads?
[A] Arthrophobia
[B] Atychiphobia
[C] Aichmophobia
[D] Agyrophobia
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Correct Answer: D [Agyrophobia]
Notes:
The fear of crossing roads is called Agyrophobia. This phobia is considered to be independent from the fear of cars, as even crossing a deserted intersection still initiates the fear reaction.
7. Bubo bubo is the scientific name of which of the following species?
[A] Hen
[B] Peacock
[C] Eagle
[D] Owl
Show Answer
Correct Answer: D [Owl]
Notes:
Bubo bubo is the scientific name of owl. The Bubo bubo or the Eurasian eagle-owl is a species of eagle-owl that resides in much of Eurasia.
8. Ornithophily refers to the pollination through which among the following?
[A] Wind
[B] Insects
[C] Birds
[D] Water
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Correct Answer: C [Birds]
Notes:
Ornithophily refers to the pollination through birds. Birds which are involved in ornithophily are specialist nectarivores with brushy tongues and long bills, that are either capable of hovering flight or light enough to perch on the flower structures.
9. Which of the following is responsible for exchange of carbon dioxide for oxygen in the lungs?
[A] Alveoli
[B] Pharynx
[C] Tendons
[D] Duodenum
Show Answer
Correct Answer: A [ Alveoli ]
Notes:
Alveoli are tiny sacs in our lungs. The main function of the alveoli is the exchange of carbon dioxide for oxygen in the lungs.
10. 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.
