List of practice Questions

The site of perception of light in plants during photoperiodism is

During the purification process for recombinant DNA technology, the addition of chilled ethanol precipitates out :

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

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

Amensalism can be represented 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 

Choose the correct answer from the options given below.

 

Which of the following algae produce Carrageen?

Gemmae are present in : 

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 

 Choose the correct answer from the options given below

DNA strands on a gel stained with ethidium bromide when viewed under UV radiation, appear as :

In the equation, GPP−R=NPP R represents :

Select the correct pair
Identify the correct statement.
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
Now a days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise its complementary DNA in a clone of cells, followed by its detection using autoradiography because:
In the exponential growth equation \(N_t=N_o e^{rt}\), e represents:
DNA fingerprinting involves identifying differences in some specific regions in DNA sequence, called as
Which of the following statements is incorrect
Which of the following statements is incorrect
What is the role of RNA polymerase III in the process of transcription in eukaryotes
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 correct?

Match Column - I with Column - II.

Match Column - I with Column - II.
Select the correct answer from the options given below.

Match List - I with List - II.
 List - I List - II
(a)S phase(i)Proteins are
synthesized
(b)G2 phase(ii)Inactive phase
(C)Quiescent stage(iii)Interval between
mitosis and initiation
of DNA replication
(d)G1 phase(iv)DNA replication

Choose the correct answer from the options given below.

Match List - I with List - II.
 List - I List - II
(a)Protein(i)C=C double bonds
(b)Unsaturated fatty acid (ii)Phosphodiester bonds
(c)Nucleic acid(iii)Glycosidic bonds
(d)Polysaccharide(iv)Peptide bonds
Choose the correct answer from the options given below.