Biology MCQs

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

2. A ripe Tomato is Red, Leaves are Green, Flower is Purple, Hair is Black. Bring out the pigments responsible for these colors respectively ?
[A] Lycopene, Melanin, Chlorophyll, Anthocyanin
[B] Lycopene, Chlorophyll, Anthocyanin, Melanin
[C] Anthocyanin, Chlorophyll, Lycopene, Melanin
[D] Melanin, Anthocyanin, Chlorophyll, Lycopene

Show Answer

3. Fructose is a form of carbohydrate synthesized in plants. It become table sugar by combining which of the following ?
[A] Glucose
[B] Galactose
[C] Maltose
[D] None of the above

Show Answer

4. Excessive consumption of which substance may lead to the development of cirrhosis?
[A] Alcohol
[B] Tobacco
[C] Caffeine
[D] Carbonated soft drinks

Show Answer

5. Meg-1 is an imprinted gene which finds expression only from maternal chromosomes which regulates the transfer of nutrients from the plant to the seed. This gene has been discovered in :
[A] Maize
[B] cotton
[C] jute
[D] Sugarcane

Show Answer

6. Which of the following is the best reason behind the fact that bats can fly in the dark?
[A] Bats have a better vision in the dark
[B] The light startles them
[C] Bats produce high pitched sounds ultrasonic
[D] None of the above

Show Answer

7. Why honey bees are called social insects?
[A] They visit all flowers to collect nectar
[B] They live in large family groups
[C] They depend for their food upon other insects
[D] They move socially with other insects

Show Answer

8. The highest fat content is found in the milk of which of the following animals?
[A] Buffalo
[B] Cow
[C] Camel
[D] Reindeer

Show Answer

9. Who was awarded Nobel Prize for deciphering the language of bees?
[A] H.G. Khurana
[B] K.V. Frisch
[C] Julian Huxley
[D] Dorothy Hodgkins

Show Answer

10. Which one of the following is a membrane that protects the developing embryo from desiccation?
[A] Amnion
[B] Allantois
[C] Chorion
[D] Yolk sac

Show Answer