3936: Where does exchange of gases (O2 and CO2) take place in our lungs ?
(a) Alveoli
(b) Bronchi
(c) Pleura
(d) Trachea
3937: Which one of the following types of micro-organisms is most widely used in industries ?
(a) Bacteria
(b) Bacteria and fungi
(c) Bacteria and algae
(d) Bacteria, micro-algae and fungi
3938: The value of a vote of a member of the Parliament for the election of the President of India is determined by dividing the
(a) Nation's population as per the latest census by the number of Lok Sabha members.
(b) Population as per the latest census by the total strength of the two Houses of the Parliament.
(c) The total value of votes of the members of all the State Legislative Assemblies by the elected members of the two Houses of the Parliament
(d) Particular State's population as per the latest census by the number of members of Parliament elected from that State
3939: The term "sixth mass extinction/sixth extinction" is often mentioned in the news in the context of the discussion of
(a) Widespread monoculture practices in agriculture and large-scale commercial farming with indiscriminate use of chemicals in many parts of the world that may result in the loss of good native ecosystems.
(b) Fears of a possible collision of a meteorite with the Earth in the near future in the manner it happened 65 million years ago that caused the mass extinction of many species including those of dinosaurs. .
(c) Large scale cultivation of genetically modified crops in many parts of the world and promoting their cultivation in other parts of the world which may cause the disappearance of good native crop plants and the loss of food biodiversity.
(d) Mankind's over-exploitation/misuse of natural resources, fragmentation/loss of natural habitats, destruction of ecosystems, pollution and global climate change.
3940: Which one of the following seeds can benefit a patient of diabetes mellitus by normalizing his blood sugar level?
(a) Coriander seeds
(b) Mustard seeds
(c) Cumin seeds
(d) Fenugreek seeds