Category: VBQs

Very Short Answer Type Questions Question. Excessive nutrients in a fresh water body cause fish mortality. Give two reasons.Answer : Excessive nutrients in a freshwater body cause fish mortality due to the following reasons :(i) Depletion of dissolved oxygen.(ii) Increase in toxic material in water body.  Question. Write the name of organism which is referred […]

Very Short Answer Type Questions Question. Identify ‘a’ and ‘b’ in the figure given below representing proportionate number of major vertebrate taxa.  Answer : (a) Mammals(b) Amphibians Question. Name the type of biodiversity represented by the following :(i) 1000 varieties of mangoes in India.(ii) Variations in terms of potency and concentration of reserpine in Rauwolfia vomitoria […]

Very Short Answer Type Questions Question. How is ‘stratification’ represented in a forest ecosystem ? Answer : Stratification is the formation of different layers (strata where vegetation is dense such as tropical rain forest). It represents vertical distribution of species at different levels.There may be many strata such as long trees, medium trees, short tress, shrubs, herbs and ground flora etc. Trees occupy […]

Very Short Answer Type Questions Question. Give an example of an organism that enters ‘diapause‘ and why ? Answer : Many species of Zooplankton, unfavourable condition. Detailed Answer :During unfavourable conditions, many zooplankton species in lakes and ponds are known to enter diapause, a stage of suspended development.Example – silk moth.  Question. How do seed – bearing plants tide over dry […]

Very Short Answer Type Questions Question. Mention two objectives of setting up GEAC by our government.ORGEAC is one of the organization set up by Indian Government. Write it’s full form. Give it’s two objectives. Answer : Indian Government has set up organisations like GEAC (Genetic Engineering Approval Committee), which make decision about the validity of GM research and the safety of […]

Very Short Answer Type Questions Question. Name the technique that is used to alter the chemistry of genetic material (DNA, RNA) to obtain desired result.Answer : Genetic Engineering / Biochemical Engineering / Biotechnology.  Question. Name the material used as matrix in gel electrophoresis and mention its role.Answer : Agarose is the most commonly used matrix […]

Very Short Answer Type Questions Question. Name the types of association that the genus Glomus exhibits with higher plants.Answer : Symbiosis / Mycorrhiza / Mutualism.  Question. Write the significance of nucleopolyhedrovirus in pest management.Answer : Nucleopolyhedroviruses are the effective biocontrol agent. They are species specific and have narrow spectrum insecticidal application having no negative impact on non […]

Very Short Answer Type Questions Question. Suggest the breeding method most suitable for animals that are below average in milk productivity. ORWrite professional approach at genetic level that can help the farmer to improve the milk yield of low milk producing cows on his farm.Answer : Outcrossing or outbreeding or cross breeding is the most suitable breeding method for animal, […]

Very Short Answer Type Questions Question. Retroviruses have no DNA. However the DNA of the infected host cell does possess the viral DNA.How is it possible?Answer : After infecting the host cell, the viral RNA undergoes reverse transcription in the presenceof an enzyme reverse transcriptase as a result of which viral DNA is formed. This […]

Very Short Answer Type Questions Question. Write the probable differences in eating habits of Homo habilis and Homo erectus.Answer : Homo habilis did not eat meat, were vegetarian while Homo erectus were probably meat eaters. Question. Rearrange the human activities mentioned below as per the order in which they developed after the modern Homo sapiens came […]