[Solved] Consider the following activities: 1. Spraying pesticides on a crop filed 2. Inspecting the craters of active volcanoes 3. Collecting breath samples from spouting whales for DNA analysis At the present level of technology, which of the above activities can be successfully carried out by using drones?

Q2. Consider the following activities:

1. Spraying pesticides on a crop filed

2. Inspecting the craters of active volcanoes

3. Collecting breath samples from spouting whales for DNA analysis

At the present level of technology, which of the above activities can be successfully carried out by using drones?

a. 1 and 2 only

b. 2 and 3 only

c. 1 and 3 only

d. 1,2 and 3

Answer: d

• Recently, Australian scientists used drones (that flew 200 meters above the blowholes of whales) to collect the mucus of whales from their water sprays to examine their health. The whale spray collected by a drone contains DNA, proteins, lipids and types of bacteria.

• Drones have also been used to study the craters of active volcanoes to know about their recent activities, a place which human beings cannot directly access.

• Recently, the use of drones to spray pesticides (in Telangana) was in the news.