PCR and Restriction Fragment Length Polymorphism are the methods for

• Study of enzymes

• Genetic transformation

• DNA sequencing

• DNA sequencing

Measuring Biochemical Oxygen Demand (BOD) is a method used for

• Estimating the amount of organic matter in sewage water

• Working out the efficiency of oil driven automobile engines

• Measuring the activity of Saccharomyces cerevisae in producing curd on a commercial scale

• Measuring the activity of Saccharomyces cerevisae in producing curd on a commercial scale

Which one of the following is not a part of a transcription unit in DNA?

• The inducer

• A terminator

• A promoter

• A promoter

64.

Both, autogamy and geitonogamy are prevented in

• papaya

• cucumber

• castor

• castor

Which one of the following is not a gaseous biogeochemical cycle in ecosystem?

• Sulphur cycle

• Phosphorus cycle

• Nitrogen cycle

• Nitrogen cycle

A single strand of nucleic acid tagged with a radioactive molecule is called

• vector

• selectable marker

• plasmid

• plasmid

• Convergent Evolution	Divergent Evolution
  Eyes of Octopus and mammals	Bones of forelimbs of vertebrates

• Convergent Evolution	Divergent Evolution
  Thorns of Bougainvillia and tendrils of Cucurbita	Wings of butterflies and birds

• Convergent Evolution	Divergent Evolution
  Bones of forelimbs of vertebrates	Wings of butterfly and birds

• Convergent Evolution	Divergent Evolution
  Bones of forelimbs of vertebrates	Wings of butterfly and birds

An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is

• cuticle

• sporopollenin

• lignin

• lignin

Cycas and Adiantum resemble each other in having 

• seeds

• motile sperms

• cambium

• cambium

What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors?

• Shortening of jaws

• Binocular vision

• Increasing cranial capacity

• Increasing cranial capacity