Biology MCQs

11. Which among the following nitrogenous wastes requires the least water for its excretion?
[A] Ammonia
[B] Urea
[C] Nitrites
[D] Uric Acid

Show Answer

12. In context with diabetes, many often we hear about Type1 and Type2 diabetes. What exactly are these?
[A] Body does not produce Insulin in Type1, does not respond properly in Type 2
[B] Body does not respond to Insulin properly in Type 1 , does not produce in Type 2
[C] Body produces too little Insulin in Type 1 , produces too much insulin in Type 2
[D] Body produces too much insulin in Type 1, produces too little insulin in Type 1

Show Answer

13. Which among the following carries impure blood to human heart?
[A] Pulmonary vein
[B] Vena Cava
[C] Aorta
[D] Pulmonary arteries

Show Answer

14. Which of the following is the function of the liver? (UPSC Prelims 1979).
[A] Promote digestion of food
[B] Promote respiration
[C] Store glucose as glucogen
[D] None of these

Show Answer

15. Which of the following facts is true regarding Colour blindness?
[A] More common among women
[B] Very rare in women
[C] Very rare in men
[D] Found to the same extent in both the sexes

Show Answer

16. Which of the following correctly define Amniocentesis? (UPSC Prelims 1988)
[A] Determination of foetal sex
[B] Separation of amino acids
[C] Determination of the sequence of amino acids in a protein
[D] Inducing abortion

Show Answer

17. Why man cannot digest cellulose whereas cows can do so? (UPSC Prelims 1992)
[A] Their gut contains certain bacteria capable of digesting cellulose
[B] They have a many-chambered stomach
[C] They have efficient grinding molars
[D] They produce enzyme cellulose which can digest cellulose

Show Answer

18. Which of the following contain a protein named Alpha-keratin? (UPSC Prelims 1997)
[A] Blood
[B] skin
[C] wool
[D] eggs

Show Answer

19. Which of the following branch of biology deals with the study and rearing of grasses?
[A] Agrostology
[B] Agronomy
[C] Dendrology
[D] Phenology

Show Answer

20. Which branch of biology is known for the study of plant fossils?
[A] Paleobotany
[B] Morphology
[C] Lichenology
[D] Agronomy

Show Answer