05Oct 2018 by Reese Bannister

Biology Question Bank – 11 Short Questions With Answers on “Organism and Populations”

Biology
11 Questions with Answers and Explanations on “Organism and Populations” for Biology Students: Image Source: classconnection.s3.amazonaws.comQ. 1. Define the terms—eurythermal, stenothermal. Ans. Organisms that can tolerate a wide range of temperature are called eurythermals. ADVERTISEMENTS: Organisms that can tolerate narrow range of temperatures are called stenothermals.Q. 2. Why are plants and animals dependent on light?Ans. Plants are dependent on light for: ADVERTISEMENTS: (1) Photosynthesis.(2) Photoperiodism—for flowering.(3) Formation of chlorophyll.Animals are dependent on light for: ADVERTISEMENTS: (1) Photoperiodism—foraging, reproductive and migratory activities.Q. 3. What is adaptation? Why do animals/plants adapt? Ans. Any change of the organism that enables the organism to survive and reproduce in its habitat is called adaptation.It is done for reproduction i.e. to increase its population (r) and survival.Q. 4. What are behavioral responses or adaptations? Give one…
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05Oct 2018 by Reese Bannister

Biology Question Bank – 12 Short Questions With Answers on “Ecosystem”

Ecosystem
12 Questions with Answers and Explanations on “Ecosystem” for Biology Students: Image Source: cnx.orgQ.1. What are the two basic categories of ecosystem? Give two examples to each.Ans. ADVERTISEMENTS: TerrestrialEx- GrasslandForest ADVERTISEMENTS: AquaticEx- PondWetlandQ. 2. Describe the components of an ecosystem. ADVERTISEMENTS: Ans. Ecosystem consists of abiotic and biotic components.Abiotic components: These components are the non-living components. Light, temperature, soil, water are the abiotic factors that make the habitat for living beings.They affect the living organisms behaviour and physiology. The survival of living organisms is directly or indirectly effected by these factors and thus they are dependent on it.Biotic components: These are the living components. Plants and animals.They live in a habitat and show inter dependance on each other and on the abiotic components.The components of the ecosystem are seem to…
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05Oct 2018 by Reese Bannister

Biology Question Bank – 13 Short Questions With Answers on “Use of Microbes in the Human Welfare”

Development
13 Questions with Answers and Explanations on “Use of Microbes in the Human Welfare” for Biology Students: Image Source: intechopen.com1. Mention the microbes groups and chemical infectious agents that cause diseases to human and other organisms? ADVERTISEMENTS: Ans. Microbes are—protozoa, bacteria, fungi, microscopic plants. Chemical agents (proteins) are—viruses, viroids, prions.Q.2. Give examples to prove that microbes release gases during metabolism. Ans. (i) Production of C02 gas in dough for making foods such as dosa, idli, bread, swiss cheese etc.(i) Production of CO-, gas methane and hydrogen from the anaerobic sludge, gobar— the gas is also called biogas/gobar gas. ADVERTISEMENTS: Q.3. In which food would you find lactic acid bacteria? Mention some of their useful applications? Ans. Milk and curd.They convert the milk into curd. This increases the nutritional quality by…
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05Oct 2018 by Reese Bannister

Biology Question Bank – 12 Short Questions With Answers on “Biodiversity and Conservation”

Traditions
12 Questions with Answers and Explanations on “Biodiversity Conservation” for Biology Students: Image Source: biodiversityconservationblog.files.wordpress.comQ. 1. Briefly mention about— (a) Genetic diversity, ADVERTISEMENTS: (b) Species diversity, (c) Ecological diversity. Ans. (a) Genetic diversity:The occurrence of single species in high diversity at the genetic level over its distributional range is called as genetic diversity. ADVERTISEMENTS: Such as in Rauwolfia vomitoria in Himalaya region, 50,000 varieties of rice, 1,000 varieties of mango in India.(b) Species diversity: The occurrence of diversity as the species level in a geographical region is called species diversity, e.g. western ghats have more amphibian species diversity than in eastern ghats. ADVERTISEMENTS: (c) Ecological diversity: A geographical region having different ecosystems will have more ecologically diverse organisms one having one or two types only. For example, India has more…
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05Oct 2018 by Reese Bannister

Biology Question Bank – 18 Short Questions With Answers on “Principles of Inheritance”

Biology
18 Questions with Answers and Explanations on “Principles of Inheritance” for Biology Students: Image Source: yourarticlelibrary.comQ.1. Mention the advantages of selecting pea plant for experiment by Mendel. Ans. ADVERTISEMENTS: Advantages are. (a) Pea plant shows self pollination.(b) It shows stable trait inheritance. ADVERTISEMENTS: (c) The expression of traits is for several generations.(d) The plants selected were true breeding.Q.2. (a) What is Punnett square? (b) Mention its one use. ADVERTISEMENTS: Ans.(a) It is a graphical representation to calculate the probability of all possible genotypes of offspring is a genetic cross.(b) It is used to represent the possible genotypes of offspring of a genetic cross.Q.3. Define and design a test-cross. Ans. The cross which helps us to determine the unknown genotype of a dominant phenotype by crossing it with the recessive parent…
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05Oct 2018 by Reese Bannister

Biology Question Bank – 15 Short Questions With Answers on “Applications of Biotechnology”

Biology
15 Questions with Answers and Explanations on “Applications of Biotechnology” for Biology Students: Image Source: frontiersin.orgQ. 1. Expand and define the term GMO. Ans. GMO: ADVERTISEMENTS: Genetically modified organisms.Organisms whose genes have been altered by manipulation are called GMO.Q. 2. Mention any two usefulness of GM plants. ADVERTISEMENTS: Ans. 1. GM plants are more tolerant to abiotic stresses such as temperature, salt etc.2. GM plants are pest resistant.Q. 3. Mention the source of Bt gene. What for it is used? Ans. The source of Bt gene is bacillus thuringiensis. ADVERTISEMENTS: It is used for making bio-pesticide (pest resistant plants)Q. 4. Give two examples to Bt crops.Ans. Bt cotton, Bt corn.Q. 5. What is cry? Ans. Cry is the gene of Bt that codes for toxin. Q. 6. What is the…
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05Oct 2018 by Reese Bannister

Biology Question Bank – 17 Short Questions With Answers on “Human Health and Disease”

Friends
17 Questions with Answers and Explanations on “Human Health and Disease” for Biology Students: Image Source: nature.comQ. 1. Mention in brief various factors that can affect health. Ans. Health is affected by: ADVERTISEMENTS: 1. Genetic disorders— The disorders developed in an individual which are inherited from either of the parents. It is called congenital disorder.2. Infections— ADVERTISEMENTS: The disorders/diseases caused due to pathogenic organisms.3. Life style— The life style of a person is responsible for developing disorders/dis­eases.Q. 2. Define health and its benefits. ADVERTISEMENTS: Ans. It is the state of complete physical, mental and social wellbeing. Benefits of health are—(1) Increase the productivity and brings economic prosperity.(2) Increases the life (Longevity).(3) It reduces infant and maternal mortality.Q. 3. What are various public health measures which you would suggest as safeguard…
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05Oct 2018 by Reese Bannister

Biology Question Bank – 15 Short Questions With Answers on “Biotechnology”

Biology
Image Source: mcg-qna.s3.amazonaws.com15 Questions with Answers and Explanations on “Biotechnology” for Biology Students:Q. 1. Define biotechnology according to European Federation of Biotechnology (EFB). Ans. According to EFB—biotechnology is the integration of natural science and organisms, cells, parts thereof, and molecular analogues for products and service. ADVERTISEMENTS: Q. 2. Define genetic engineering. Ans. The techniques used to alter the chemistry of the genetic material to introduce these into the host organisms in order to change the phenotype of the host is called as genetic engineering.Q. 3. What is cloning? ADVERTISEMENTS: Ans. The process of making multiple copies to without the involvement of reproductive process is called cloning.Q. 4. Name the first restriction endonuclease. Ans. Hind II.Q. 5. Give one example to restriction endonuclease. ADVERTISEMENTS: Ans. EcoRl.Q. 6. To which class do…
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05Oct 2018 by Reese Bannister

Biology Question Bank – 14 Short Questions With Answers on “Environmental Issues”

Air Pollution
14 Questions with Answers and Explanations on “Environmental Issues” for Biology Students: Image Source: quotationof.comQ. 1. What are the effects on our body of particulates of size 2.5 micrometers? Ans. These particles are deep inhaled into lungs and cause— ADVERTISEMENTS: (i) breathing and respiratory problems.(ii) irritation, inflammation, damage to lungs.(iii) premature death. ADVERTISEMENTS: Q. 2. (i) Why are auto vehicles filled with catalytic converters? (ii) What do these, devices have as catalyst? (iii) How are these converters useful? Ans. (i) Catalytic converters are devices fitted to auto vehicles to reduce atmospheric pollution, due to burning of petrol/diesel. ADVERTISEMENTS: (ii) Rhodium, platinum-palladium are the catalyst fitted to the converters.(iii) These catalyst converters, convert the unburnt hydrocarbons into C02, H00, and CO and nitric oxide are converted into CO2,, N2.Q. 3. Mention…
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05Oct 2018 by Reese Bannister

Biology Question Bank – 21 Short Questions With Answers on “Inheritance in Human”

Biology
21 Questions with Answers and Explanations on “Inheritance in Human” for Biology Students: Image Source: bdb3b8.medialib.glogster.comQ. 1. What is the basis of DNA length? Ans. It depends on the number of nucleotide pairs present in it. ADVERTISEMENTS: Q. 2. Name the molecules that form the backbone of polynucleotide chain. Ans. (1) Sugar(2) Phosphate. ADVERTISEMENTS: Q. 3. What are the ratios between Adenine and Thymine and Guanine and Cytosine? Ans. It is constant and equals to one.Q. 4. Who identified the acidic nature of deoxyribose nucleic acid?Ans. Friendrich Meischer. ADVERTISEMENTS: Q. 5. Who proposed the central dogma of molecular biology? Ans. Francis Crick.Q. 6. What is central dogma in molecular biology? Ans. The flow of information from DNA -» RNA -> Protein is called central dogma in molecular biology.Replication—– transcription translation…
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