Recent questions tagged zoology

What is the relationship between species richness and area? What is the significance of the slope of regression?

asked Dec 21, 2016 by meena.p

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What are the measures that need to be taken for effective poultry farm management?

asked Dec 21, 2016 by meena.p

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It was diagnosed by a specialist that the immune system of a patient has been suppressed. Describe the infection and the mechanism of penetration into the body.

asked Dec 20, 2016 by meena.p

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Given below is the diagrammatic representation of the experimental set up used by Miller for his experiment (a)Write the names of the different gases contained and the conditions set for reaction in flask A.(b)State the type of organic molecules he collected in the water at “B”. (c) Write the conclusions he arrived at?

asked Dec 20, 2016 by meena.p

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List four symptoms of Down’s syndrome. What is the basis of this disorder?

asked Dec 20, 2016 by meena.p

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Give a schematic labeled diagram of oogenesis.

asked Dec 20, 2016 by meena.p

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Why do bottled juices appear clearer than homemade ones?

asked Dec 20, 2016 by meena.p

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What is metastasis? or Where are T-cells and B-cells formed? How do they differ from each other?

asked Dec 20, 2016 by meena.p

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What is frame shift mutation? Name any one disease caused due to this mutation?

asked Dec 20, 2016 by meena.p

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Draw a neat labeled diagram of a human sperm.

asked Dec 20, 2016 by meena.p

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Name any two threatened animal species of India.

asked Dec 20, 2016 by meena.p

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Why is mutation breeding necessary for breeding for disease resistance?

asked Dec 20, 2016 by meena.p

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Name the enzyme that joins the short pieces in the lagging strand during DNA synthesis.

asked Dec 20, 2016 by meena.p

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What is a mutagen? Give an example.

asked Dec 20, 2016 by meena.p

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What is extinction of species? Describe the processes that lead to extinction of species .Discuss the cause and effect of global warming . what measures need to be taken to control global warming?

asked Dec 20, 2016 by meena.p

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What is meant by semi conservative nature of DNA replication? Who proved it and how? What does Oparin-Haldane hypothesis about life suggest? Explain.

asked Dec 20, 2016 by meena.p

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Some parents wrote a complaint letter to the local municipality to remove all the hoardings in the city advertising the use of condoms and matters related to AIDS prevention. The children of these parents came to know about the matter and raised their voice against removal of hoardings. The parents were convinced by the awareness level of their children and withdrew their complaint a)Parents considered the hoardings as sight pollution. Why do you disagree? b)What value is promoted by the children protesting against their parents? c)What are the methods through which AIDS spread?

asked Dec 20, 2016 by meena.p

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List the important characteristics of a population and explain.

asked Dec 20, 2016 by meena.p

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Explain the procedure of ELISA.

asked Dec 20, 2016 by meena.p

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Identify and explain the steps “A”, “B” and “C” in the PCR diagram given below

asked Dec 20, 2016 by meena.p

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Observe the given sequences of nitrogenous base on a DNA fragment and answer the questions:5’-CAGAATTCTTA-3’ 3’-GTCTTAAGAAT-5’ a.Name the restriction enzyme that can recognize this DNA sequence. 5’-CAGAATTCTTA-3’ 3’-GTCTTAAGAAT-5’ a. Name the restriction enzyme that can recognize this DNA sequence.b.Write the sequence after digestion. c.Why are ends generated after digestion called sticky end?

asked Dec 20, 2016 by meena.p

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How does humoral immunity work when our body is infected?

asked Dec 20, 2016 by meena.p

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Given below is the schematic representation of Lac operon (a).Identify i and p (b).Name the inducer in this operon and explain its role.

asked Dec 20, 2016 by meena.p

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Name and explain the principle given by the equation $P^2 + 2PQ + Q^2=1$

asked Dec 20, 2016 by meena.p

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Name the three major types of RNAs, specifying the function of each in the synthesis of polypeptide.

asked Dec 19, 2016 by meena.p

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What is brood parasitism? Give an example

asked Dec 19, 2016 by meena.p

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Draw a labeled diagram of an antibody molecule

asked Dec 19, 2016 by meena.p

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Differentiate between convergent and divergent evolution

asked Dec 19, 2016 by meena.p

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What is inter specific hybridization? Give an example. or Differentiate between inbreeding and outbreeding in animals

asked Dec 19, 2016 by meena.p

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State two functions of human placenta.

asked Dec 19, 2016 by meena.p

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State Allen’s rule.

asked Dec 19, 2016 by meena.p

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Name the technique used for amplification of DNA.

asked Dec 19, 2016 by meena.p

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Name the common ancestor of ape and a man.

asked Dec 19, 2016 by meena.p

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Name the common ancestor of ape and a man.

asked Dec 19, 2016 by meena.p

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What is a test cross?

asked Dec 19, 2016 by meena.p

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Give an account of factors affecting rate of decomposition.Write a short note on the pyramid of numbers and pyramid of biomass.

asked Dec 19, 2016 by meena.p

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Give an account of factors affecting rate of decomposition.Write a short note on the pyramid of numbers and pyramid of biomass.

asked Dec 19, 2016 by meena.p

1 answer

Differentiate between dominance, co dominance and incomplete dominance with an example for each.or A dihybrid heterozygous tall and yellow pea plant was crossed with a double recessive plant.A dihybrid heterozygous tall and yellow pea plant was crossed with a double recessive plant.a)What type of cross is this? b)Work out the genotype and phenotype of progeny c)What principle of Mendel is illustrated through the result of this cross?

asked Dec 19, 2016 by meena.p

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On world population day, Rohit and his friends arranged an awareness campaign programme in their locality. Some elderly people rebuked the children and asked them not to talk on such things in public. The children convinced the elders about the need of the programme and on the understanding their point of view, they also joined the campaign a.) What values did elderly people and Rohit show on the occasion? b)Why is such an awareness programme necessary? c)What role the government has played in controlling population explosion?

asked Dec 19, 2016 by meena.p

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Study the table given below and fill in the blanks from A to F

asked Dec 19, 2016 by meena.p

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A selectable marker is used in the selection of recombinants on the basis of their ability to produce colour in the presence of the chromogenic substrate. a) Mention the name of the mechanism involved. b)Which enzyme is involved in the production of the colour?c)How is it advantageous over using antibiotic resistant gene as a selectable marker?

asked Dec 19, 2016 by meena.p

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Explain the effect of deletion of the gene in an individual. How does gene therapy help in this case?

asked Dec 19, 2016 by meena.p

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What measures would you undertake to improve the quality & quantity of milk production?

asked Dec 19, 2016 by meena.p

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What is immunity? List four barriers that protect the body from the entry of foreign agents. or The outline structure of a drug is given below a)Which group of drugs does this represent? b) What are the modes of consumption of these drugs? c. Name the organ of the body that is affected by the consumption of these drugs.

asked Dec 19, 2016 by meena.p

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Look at the diagram and answer the following :a)Mention the specific geographical region where these organisms are found.b)Name and explain the phenomenon that has resulted in the evolution of such diverse species in a region. c)Explain giving reasons the existence of placental wolf and Tasmanian wolf sharing the same habitat.

asked Dec 19, 2016 by meena.p

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There are 64 codons in the genetic code dictionary.a)How many of them code for an amino acid? b)How many aminoacids are coded? c)Which term do you give these codons that do not code for aminoacid?

asked Dec 19, 2016 by meena.p

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Explain *** determination mechanism in humans. How is it different in birds?

asked Dec 19, 2016 by meena.p

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What is germplasm? Why is it necessary to have a germplasm collection?

asked Dec 8, 2016 by meena.p

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Why is it essential that tRNA binds to both aminoacids and mRNA during protein synthesis?

asked Dec 8, 2016 by meena.p

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Which enzymes are known as “molecular scissors”?

asked Dec 8, 2016 by meena.p

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