[Mission 2022] QUIZ – 2022: INSIGHTS STATIC QUIZ, 18 December 2021 – Environment – INSIGHTSIAS

Solution: c)

In this solid state, the normal microbial decomposition of organic materials is stalled, and the carbon dioxide and methane that’s normally produced stays in the ground.

This means that in the permanently frozen regions of Siberia, Canada, Greenland and Alaska store about double the amount of carbon that’s up in the atmosphere.

But as the Earth warms, and the soils starts to get hotter, the microbes become active and the greenhouse gases drift upwards once again.

Solution: a)

Mosses are a common flowerless plant found in all cities especially in damp (humid) or shady locations. It generally absorbs water and nutrients from their immediate environments.

So, according to scientists, delicate mosses found on rocks and trees in cities around the world can be used as low-cost bio indicator to monitor urban pollution and to measure the impact of atmospheric change.

As a bio indicator, mosses respond to pollution or drought- stress by changing its shape, density or disappearing. This characteristic will allow scientists to calculate atmospheric alterations and air pollution.

Solution: c)

Living organisms were first evolved on seas and then moved to lands. Simple organisms like blue green algae, bacteria were first evolved, then it lead to corals, spiders and complex animals like snakes, horses etc.,

Solution: b)

Biotic potential, the maximum reproductive capacity of an organism under optimum environmental conditions.

Solution: d)

Often mistaken for a form of vegetation, corals “are in fact an animal that lives in symbiosis with an algae, a plant,”

Corals and algae “provide services for each other,” with the algae providing “up to 90% of the coral animal’s food” through photosynthesis

“When ocean temperatures get too hot, this symbiosis, this relationship, breaks down”. “The algae is lost from the coral and causes the coral to look white,” effectively “starving” it.

When coral bleaches, it is not dead. Corals can survive a bleaching event, but they are under more stress and are subject to mortality.