Science Practice Quiz 67

Q1.Which of the following is given as an example of variants found in human populations in the context of earlobes?

A. Long and short earlobes. B. Thick and thin earlobes. C. Free and attached earlobes. D. Pointed and rounded earlobes.

Q2.How does the creation of variations in a species promote survival, as exemplified by bacteria in the text?

A. It ensures all individuals are identical. B. It allows some variants to survive better in changing environmental conditions. C. It prevents any form of natural selection. D. It reduces the overall population size.

Q3.What characteristic do human populations show despite children bearing basic human features?

A. Complete uniformity in appearance. B. A great deal of variation. C. Exact resemblance to parents. D. Absence of any inherited traits.

Q4.Gregor Johann Mendel conducted his pioneering experiments on the inheritance of traits using which plant?

A. Garden peas B. Tomato plants C. Wheat plants D. Maize plants

Q5.When Mendel crossed tall and short pea plants, what was the characteristic observation in the first-generation (F1) progeny?

A. All plants were of medium height. B. All plants were tall. C. All plants were short. D. Half the plants were tall and half were short.

Q6.After self-pollinating the F1 tall plants, what proportion of the second-generation (F2) progeny were observed to be short?

A. One half B. One third C. One quarter D. Three quarters

Q7.The appearance of short plants in the F2 generation, after self-pollination of F1 tall plants, indicated what about the F1 plants?

A. Only the tallness trait was inherited in F1 plants. B. Both tallness and shortness traits were inherited in F1 plants, but only tallness was expressed. C. F1 plants developed new traits not present in the parental generation. D. F1 plants were genetically identical to the parental tall plants.

Q8.In which year was Gregor Johann Mendel, known for his work on inheritance, born?

A. 1802 B. 1822 C. 1842 D. 1862

Q9.Gregor Johann Mendel pursued his studies in science and mathematics at which university?

A. University of Cambridge B. University of Oxford C. University of Vienna D. University of Berlin

Q10.What examination did Gregor Johann Mendel fail, which despite the setback, did not deter his scientific pursuits?

A. Medical entrance examination B. Law degree examination C. Teaching certificate examination D. Philosophy doctorate examination

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Science Practice Quiz 67