Previous Year Question
Which one of the following is not properly matched?
Gene splicing and recombinant DNA — Genetic Engineering
A diagnostic test to detect the presence or absence of genetic disorders in an unborn child — Amniocentesis
A process by which living organisms break down complex matter into simpler constituents — Biodegradation
An inbuilt time-keeping system in all organisms — Bio-mass
Correct Answer: D
Detailed Solution
A Biological Clock is an internal timing system within an organism that regulates various biological rhythms. A rhythm of approximately 24 hours is called a Circadian Rhythm.
Gene splicing and Recombinant DNA technology are associated with Genetic Engineering. They involve techniques such as cutting and joining DNA and constructing new recombinant DNA molecules.
Amniocentesis is a prenatal diagnostic procedure in which amniotic fluid is examined to detect certain chromosomal and genetic disorders in a fetus.
In Biodegradation, microorganisms and other living organisms break down complex organic substances into relatively simpler substances.
In contrast, Biomass refers to biological material/living or recently living organic matter present in an area or system; it is not an internal time-keeping system.