Railway Science (Biology – Discoveries and Vaccines)

Total Questions: 25

21. Who is considered as the father of taxonomy? [RRB Group D 27/09/2018 (Morning)]

Correct Answer: (d) Linnaeus
Solution:

Taxonomy: The science of naming, describing and classifying organisms and includes all plants, animals and microorganisms of the world. Classification is based on behavioural, genetic and biochemical variations.
Darwin - known for his contributions to the theory of evolution by natural selection. Benoit Mandelbrot - Father of fractals.

22. ______ Theory of Evolution tells us how life evolved from simple to more complex forms. [RRB Group D 28/09/2018 (Afternoon)]

Correct Answer: (a) Darwin's
Solution:

The Theory of Evolution by natural selection was first formulated in Charles Darwin's book "On the Origin of Species". According to the theory, The ones who have characteristics that allow them to survive and reproduce better will pass on these characteristics to their offspring.

23. On what basis did Mendel give the law of purity of gametes? [RRB Group D 30/10/2018 (Afternoon)]

Correct Answer: (d) Monohybrid cross
Solution:

The law of purity of gametes states that when an individual with two identical alleles for a particular trait undergoes gamete formation, each gamete will contain only one of the two alleles. Gregor Mendel is known as the Father of Genetics.

24. ______ Experiments provide us with a mechanism to pass on the inheritance of traits from one generation to the next. [RRB Group D 15/11/2018 (Afternoon)]

Correct Answer: (c) Mendel's
Solution:

Mendel worked on pea plants, but his principles apply to traits in plants and animals – they can explain how we inherit our eye color, hair color, and even tongue-rolling ability

25. Arrange the following in the ascending order of Linnaean hierarchy : [RRB Group D 05/12/2018 (Afternoon)]

Correct Answer: (c) Kingdom - Phylum - Class - Order - Family - Genus - Species
Solution:

Taxonomic hierarchy is the process of arranging various organisms into successive levels of the biological classification either in a decreasing or an increasing order from kingdom to species and vice versa.