Top 1000+ Solved Biology (GK) MCQ Questions Answer
Q. Which of the following is least likely to be an effect of global warming?
a. Increased frequency of hurricanes
b. Loss of fertile delta region as for agriculture
c. Decreased rate of photosynthesis in vegetation
d. Shrinking of the polar ice regions
Q. Leaves of many grasses are capable of folding and unfolding because
a. their mesophyll is not differentiated into palisade and spongy parenchyma
b. they have stomata on both sides of the leaf
c. they have high levels of silica
d. they have specialised bulliform cells
Q. Diamond does not conduct electricity, because -
a. It's structure is very compact
b. It is of crystalline nature
c. There are only carbon atoms present in it
d. No free electrons are present in it
Q. 'Gynecomastia' is -
a. Development of hair on ears in males
b. Increased height in females
c. Development of an extra finger in females
d. Development of breasts in males
Q. Biofortifieation is a -
a. method of breeding crops to increase their nutritional value
b. strategy to combat unwanted nutrients in plants
c. method of developing resis-tance to insect pests
d. method of plant breeding for disease resistance
Q. Which of the following statements is true?
a. Animals worry about raising their family
b. Animals make several feeding trips in a day
c. Animals often behave sensibly
d. Animals do not know meaning of brotherhood
Q. If a healthy freshwater fish is placed in salt water, what will be the expected consequence?
a. The fish becomes dehydrated and dies
b. The fish becomes bloated and dies
c. The fish suffers from fungal or bacterial disease and dies
d. There is no observable effect on the fish provided there is sufficient food
Q. Which of the following statements about phloem transport is correct?
a. phloem transport occurs unidirectionally
b. gravity influences phloem transport
c. Ca+ is the most abundantcation in phloem sap
d. sugar is transported in phloem as nonreducing sugar
Q. What causes the mottling of the dental enamel?
a. High levels of chlorine in water
b. High levels of nitrate in the water
c. High levels of fluorides in the water
d. High levels of calcium in the water
Q. Intensive cultivation refers to
a. production with intensive use of labour
b. production with intensive use of fertilizer
c. raising production by intensive use of existing land
d. raising production by large scale use of imported inputs
Q. Which one of the following statements about PYROLYSIS, which is a process for solid waste treatment is incorrect?
a. It converts the waste into solid, liquid and gas of which the resultant liquid and gas can be used to produce energy.
b. The process occurs at a temperature above 430°C at atmospheric pressure.
c. The process occurs under high pressure at temperature above 430° C.
d. It is a thermo chemical decomposition of organic waste
Q. In bio fortification technique plant breeders use breeding to overcome
a. Loss due to insect pests
b. Decrease in food production
c. Deficiencies of micronutrients and vitamins
d. Loss due to plant diseases
Q. Rotation of crops is essential
a. For increasing the quantity of minerals.
b. For decreasing the quantity of proteins.
c. For getting different kinds of crops.
d. For increasing fertility of the soil.
Q. What do you understand by the term Dark Fermentation'?
a. It is a method to dispose nu-clear wastes.
b. It is a method to produce methane from organic wastes.
c. It is a method to reduce COD in the atmosphere.
d. It is a method to produce Hydrogen as a fuel from waste water.
Q. Which of the following listed is not a feature of organic farming?
a. The non-use of chemical fertilizers and pesticides
b. Soil is nurtured for furture use by maintaining micro-or-danisms tin
c. Use of synthetic fertilizers
d. Very less energy consumption