61.

A good producer of citric acid is

• Aspergillus

• Pseudomonas

• Clostridium

• Clostridium

DNA fragments generated by the restriction endonucleases in a chemical reaction can be separated by

• centrifugation

• polymerase chain reaction

• electrophoresis

• electrophoresis

Which of the following is not correctly matched for the organism and its cell wall degrading enzyme?

• Bacteria -Lysozyme

• Plant cells - Cellulase

• Algae - Methylase

• Algae - Methylase

The colonies of recombinant bacteria appear white in contrast to blue colonies of non-recombinant bacteria because of 

• Non-recombinant bacteria containing  β-galactosidease 

• Insertional inactivation of α - galactosidase in recombinant bacteria

• Insertional inactivation of α-galactosidase in recombinant bacteria

• Insertional inactivation of α-galactosidase in recombinant bacteria

Secondary productivity is rate of formation of new organic matter by

• producer

• parasite

• consumer

• consumer

Natural reservoir of phosphorus is 

• sea water

• animal  bones

• rock

• rock

Which one of the following is not used for ex-situ plant conservation?

• Field genebanks

• Seed banks

• Shifting cultivation

• Shifting cultivation

Kyoto Protocol was endorsed at 

• CoP-3

• CoP-5

• Cop-6

• Cop-6

What is the correct sequence of sperm formation

• spermatid, spermatocyte, spermatogonia, spermatozoa

• Spermatognia, Spermatocyte, Spermatozoa, Spermatid

• Spermatogonia, spermatozoa, Spermatocyte, Spermatid

• Spermatogonia, spermatozoa, Spermatocyte, Spermatid

Menstrual flow occurs due to lack of

• progesterone

• FSH

• Oxytocin

• Oxytocin