Practice Questions

TLS Online TPP Program

#Question id: 9232

Establishing new nature reserves in biodiversity hot spots may not necessarily the best choice because ________.

#Unit 9. Diversity of Life Forms

hot spots are situated in remote areas not accessible to the public
their ecological importance makes land purchase very expensive
a hot spot helps conserve only a few species
changing environmental conditions may shift the location of the hot spot

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TLS Online TPP Program

#Question id: 4826

#Unit 8. Inheritance Biology

In Drosophila melanogaster, vestigial wings are determined by a recessive allele of a gene that is linked to a gene with a recessive allele that determines black body color. T. H. Morgan crossed black-bodied, normal-winged females and gray-bodied, vestigial-winged males. The F1 were all gray bodied, normal winged. The F1 females were crossed to homozygous recessive males to produce testcross progeny. Morgan calculated the map distance to be 17 map units. Which of the following information is correct about the testcross progeny?

TLS Online TPP Program

#Question id: 23158

#Unit 13. Methods in Biology

You have purified protein X and injected into an animal so that over a period of weeks, the animal will mount an immune response and make antibodies to protein X. By which technique these generated antibodies can be extracted from blood serum.

TLS Online TPP Program

#Question id: 16103

#Unit 7. System Physiology – Animal

The set point level for body temperature is situated in:

TLS Online TPP Program

#Question id: 18593

#Unit 11. Evolution and Behavior

Some important events in the history of life on Earth are given below.