Science Practice Quiz 71

Q1.In sexually reproducing individuals, if two copies of genes for the same trait are not identical, which trait gets expressed?

A. The recessive trait B. The dominant trait C. A blended trait D. Neither trait

Q2.What type of changes arising during the process of reproduction can be passed on to offspring?

A. Environmental adaptations B. Acquired characteristics C. Variations D. Random mutations only

Q3.What potential benefit can variations arising during the process of reproduction provide to individuals?

A. Reduced genetic diversity B. Decreased survival rates C. Increased survival of the individuals D. Uniformity within the species

Q4.In human beings, which parent's chromosome determines the sex of the child?

A. Maternal chromosome B. Paternal chromosome C. Both maternal and paternal chromosomes equally D. Environmental factors

Q5.According to the provided text, what is the sex of a human child if the paternal chromosome is X?

A. Boy B. Girl C. Undetermined D. Depends on the maternal chromosome

Q6.In human beings, if the paternal chromosome is Y, what will be the sex of the child?

A. Girl B. Boy C. Intersex D. Determined by the mother

Q7.What enables us to see objects in a lit room?

A. Absorption of light B. Emission of light C. Reflection of light D. Transmission of light

Q8.Why are we able to see through a transparent medium?

A. Light is absorbed by it B. Light is reflected by it C. Light is transmitted through it D. Light is scattered by it

Q9.Which of the following is NOT explicitly mentioned as a common wonderful phenomenon associated with light in the given text?

A. Image formation by mirrors B. Twinkling of stars C. Beautiful colours of a rainbow D. Formation of shadows by transparent objects

Q10.The fact that a small source of light casts a sharp shadow of an opaque object points to which property of light?

A. Light's wave nature B. Light's particle nature C. Light's tendency to bend D. Light's straight-line path