Top 1000+ Solved Biology (GK) MCQ Questions Answer
Q. Which of the following series is true about energy flow in an ecosystem?
a. Producers Decomposers Consumers
b. Decomposers Consumers Producers
c. Producers --> Consumers --> Decomposers.
d. Consumers --> Producers Decomposers.
Q. Rate of cooling depends on the
a. Temperature difference between the body and the surroundings
b. Nature of the radiating surface
c. Area of the radiating surface
d. All of these
Q. What is the Kyoto Protocol?
a. It is an agreement among countries to take steps for reducing acid rain
b. It is an agreement among countries to take steps for planting trees to control pollution
c. It is an agreement among countries to start using nu-clear energy
d. It is an agreement among countries to take steps for reducing global warming
Q. For a healthy heart, one needs to take a balanced diet, adequate sleep and -
a. indulge in vigorous mental activities
b. play games like carrom, chess and cards
c. do right amount of physical exercise
d. do sedentary work
Q. Which of the following statements is true?
a. Dehusked cereals and pulses are more nutritious
b. Whole grain cereals and pulses are more nutritious
c. Processed cereal products are nutrient dense
d. Breakfast cereals are nutrient dense
Q. The main use of salt in the diet is to -
a. increase the solubility of the food particles in water.
b. produce in small amounts the hydrochloric acid required for the digestion of food
c. ease the process of cooking
d. make the taste of the food better
Q. Which of the following correctly explains the phenomenon of "Test Tube Bally"?
a. When every process of embryo formation is in the test tube.
b. When the embryo develops in a test tube.
c. When the fertilisation is external and development is internal.
d. When the fertilisation is internal and development is external.
Q. Which of the following events occurred first?
a. DNA structure of genes was discovered by James D Watson and Francis Crick
b. Yuri Gagarin became the first man in space
c. World's first human heart transplant was performed by Dr. Christian Barnard
d. World's first test tube baby Louise Brown was born in U.K.
Q. Identify the correct statement with respect to Biogas.
a. Mixture of gases from volcanoes
b. Gas produced from certain crude oil wells
c. Gas produced by incomplete combustion of biomass
d. Gas produced by fermentertian of biomass
Q. Heart attack occurs due to –
a. Bacterial attack on the heart
b. Stopping of heart beat
c. Lack of supply of blood to the heart itself
d. Impairment of heart's working due to unknown reasons
Q. 'Green House Effect' means -
a. cultivation of crops in green house to conserve heat
b. trapping of solar energy due to carbon dioxide gases
c. trapping of solar energy by earth upper surface
d. increase of heat due to atmospheric pollution
Q. Fat present below the skin surface in our body acts as a barrier against –
a. loss of heat from the body
b. loss of essential body fluids
c. loss of salt from the body
d. entry of harmful micro-organisms from the environment
Q. Xylem fibres are made up of –
a. Scierenchyma cells with thin walls
b. Scierenchyma cells with thick walls
c. Parenchyma cells with thin walls
d. Scierenchyma cells with no obliteration in central lumen
Q. Which of the following item is not included in Environmental Auditing?
a. Pollution monitoring schemes
b. Scrutiny by the government agencies
c. Safety provisions for industrial workers
d. Storage of toxic chemicals
Q. Membrane lipids of chillsensitive plants contain -
a. low proportion of saturated fatty acids.
b. low proportion of unsaturated fatty acids.
c. equal proportion of saturated and unsaturated fatty acids.
d. high proportion of unsaturated fatty acids.