Read the passage and answer the following question.
Epidemiologists concerned with the spread of the hantavirus from rats to humans conducted an experiment to explore the effectiveness of a particular pesticide. They exposed a population of 100 rats to the pesticide on day 1. After exposure, they allowed any rats that survived to reproduce. They monitored the population of rats for 100 days and plotted a graph of the data they collected.
According to graph day 1 represents

The female rats were sterilized by the pesticide.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The male rats were sterilized by the pesticide.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Most of the rats were sterilized by the pesticide.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

All the rats were killed by the pesticide.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Most of the rats were killed by the pesticide.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is E Most of the rats were killed by the pesticide.
According to day 1, graph represents that most, but not all of the rats killed by the pesticide. There is no evidence that any rats were sterilized because they continue to reproduce and the population increases in size again.
Therefore, the correct answer is option E.

Suggest Corrections

Similar questions

Q. Read the passage and answer the following question.
Epidemiologists concerned with the spread of the hantavirus from rats to humans conducted an experiment to explore the effectiveness of a particular pesticide. They exposed a population of 100 rats to the pesticide on day 1. After exposure, they allowed any rats that survived to reproduce. They monitored the population of rats for 100 days and plotted a graph of the data they collected.
The results of this experiment is explained by

Q. A biologist studied the population of rats in a barn. Initially the number of rats were

200

. Now

15

new rats were born and mortality was

20

. So, what will be the final population?

40% of the rat population in Hamelin perished due to a famine. The remaining 60% were drawn out of the town by the Pied Piper of Hamelin. If there were 48000 rats in the town originally, how many rats died due to the famine?

Q. A given population of rats inhabiting a habitat X consisted 500 rats at the beginning of the year. Throughout the year there were 200 rats born and 150 rats that died. Around 65 rats from a neighbouring habitat entered this population of habitat X in the middle of the year and started living with the original population. 30 rats left the population by the end of the year to find a new habitat. What is the final size of the population living in habitat X at the end of the year?

Q. An allele in a rat population prevents proper Vitamin K metabolism. Rats with this trait are selected against and are found at a low frequency.
However, rats with this trait have resistance to Warfarin, a poison that works by causing fatal bleeding (Warfarin is also used medically in humans as an anticoagulant).
A public health office chooses to use Warfarin to reduce the city's rat population. Initially, the rat population decreases dramatically. After a few generations, though, the rat population increases.
Genetic testing reveals that most of the rats are resistant to Warfarin, so they discontinue the use of the poison. After several years, genetic testing is performed again. What are the expected results?

Join BYJU'S Learning Program