Biology problems
- 1. Pollination by wind is called
Options- A. anemophily
- B. hydrophily
- C. zoophily
- D. entomophily Discuss
Correct Answer: anemophily
- 2. out of proteins, lipids and carbohydrates present in a cell membrane, what is true?
Options- A. Lipids are maximum
- B. Carbohydrates are minimum
- C. Carbohydrates are maximum
- D. All three are in equal proportion Discuss
Correct Answer: Carbohydrates are minimum
- 3. Pyorrhoea is a disease of the
Options- A. nose
- B. gums
- C. heart
- D. lungs Discuss
Correct Answer: gums
Explanation:
Pyorrhoea, or periodontal disease, to give it a proper medical term, is a disease of the gums, it is one of the most widely prevalent diseases. It affects the membrane surrounding the roots of the teeth and leads to loosening of the teeth, pus formation, and shrinkage of the gum. This disease is the primary cause for tooth loss among adults.
- 4. Plant development is influenced by
Options- A. quality of light only
- B. quality and quantity of light
- C. quality and duration of light
- D. quality, quantity and duration of light Discuss
Correct Answer: quality, quantity and duration of light
- 5. Ordinary table salt is sodium chloride. What is baking soda?
Options- A. Potassium chloride
- B. Potassium carbonate
- C. Potassium hydroxide
- D. Sodium bicarbonate Discuss
Correct Answer: Sodium bicarbonate
- 6. Osmosis is the flow of solution from higher concentration to a solution of lower concentration through a semi permeable membrane. What is incorrect in this statement?
Options- A. Exact concentration of solution is not given
- B. Character of semi permeable membrane is not given
- C. The flow of solution is not possible through semi permeable membrane
- D. All are incorrect Discuss
Correct Answer: The flow of solution is not possible through semi permeable membrane
- 7. Pulses are a good source of
Options- A. carbohydrates
- B. fats
- C. proteins
- D. vitamins Discuss
Correct Answer: proteins
- 8. Normal adult human male has
Options- A. 10 gram of haemoglobin/100 gram of blood
- B. 14 gram of haemoglobin/100 gram of blood
- C. 18 gram of haemoglobin/100 gram of blood
- D. 24 gram of haemoglobin/100 gram of blood Discuss
Correct Answer: 14 gram of haemoglobin/100 gram of blood
- 9. Mumps is a disease caused by
Options- A. fungus
- B. bacterium
- C. virus
- D. None of these Discuss
Correct Answer: virus
- 10. Monotremes are unique mammals because they
Options- A. posses hair
- B. give birth to live young
- C. secret milk in a pouch
- D. lay eggs Discuss
Correct Answer: lay eggs
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