List of top Biology Questions

While swallowing, which part diverts food mass away from the opening of larynx ?
Which of the following is sound producing organ in man ?
What is the energy currency of the cell called ?
Which vitamin is necessary for clotting of blood ?
In which plants oxygen is absorbed through aerial roots?

The amount of nutrients, such as carbon, nitrogen, phosphorus and calcium present in the soil at any given time, is referred as

Match List - I with List - II. 

List - I

List - II

(a)Cohesion(i)More attraction in liquid phase
(b)Adhesion (ii)Mutual attraction among water molecules
(c) Surface tension(iii)Water loss in liquid phase 
(d)Guttation (iv)Attraction towards polar surfaces 

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Which of the following statements is not correct?

Match List - I with List - II. 

List - I

List - II

(a)Protoplast fusion(i)Totipotency
(b)Plant tissue culture(ii)Pomato
(c)Meristem culture(iii)Somaclones
(d)Micropropagation(iv)Virus-free plants

 

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Identify the correct statement.

Gemmae are present in : 

The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is

Which of the following statements wrongly represents the nature of smooth muscle?

When gene targetting involving gene amplification is attempted in an individual’s tissue to treat disease, it is known as :

Which of the following stages of meiosis involves the division of the centromere?

DNA fingerprinting involves identifying differences in some specific regions in DNA sequence, called as

Which of the following is not an application of PCR (Polymerase Chain Reaction)?

Diadelphous stamens are found in :

In some members of which of the following pairs of families, pollen grains retain their viability for months after release
Which of the following statements is incorrect

Match List - I with List - II.

List - I

List - II 

(a)Cells with active cell division capacity (i)Vascular tissues
(b)Tissue having all cells similar in structure and function (ii)Meristematic tissue
(c)Tissue having different types of cells(iii)Sclereids
(d)Dead cells with highly thickened walls and narrow lumen(iv)Simple tissue

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Mutations in plant cells can be induced by

Which of the following is a correct sequence of steps in a PCR (Polymerase Chain Reaction)?

Plasmid pBR322 has PstI restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is used for inserting a gene for β-galactoside production and the recombinant plasmid is inserted in an E.coli strain

Match List - I with List - II. 

List - I

List - II

(a)Lenticels(i)Phellogen
(b)Cork cambium(ii)Suberin deposition
(c)Exchange of gases(iii)Exchange of gases
(d)Cork(iv)Phelloderm 

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