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2017

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Scientists have discovered the world’s first fluorescent frog in which state
A
Argentina
B
Canada
C
Vietnam
D
Africa
Explanation: 

Detailed explanation-1: -Scientists have discovered polka dot tree frog (Hypsiboas punctatus), the world’s first fluorescent frog in Argentina.

Detailed explanation-2: -A team of researchers has discovered the first naturally fluorescent frog in Argentina. The discovery was made when Argentine and Brazilian scientists at the Bernardino Rivadaiva Natural Sciences Museum were studying the metabolic origin of pigments in a tree-frog species common in South America.

Detailed explanation-3: -The polka dot tree frog is the first record of a fluorescent amphibian, researchers say. The scientists traced the fluorescence to a new group of molecules, which they named hyloins, occuring in the frog’s lymph tissue, skin and glandular secretions.

Detailed explanation-4: -Triadobatrachus massinoti, the world’s first frog About 250 million years ago, long before the arrival of the dinosaurs, a ten-centimetre-long amphibian with a flat, compact body emerged on the supercontinent Pangaea. Unlike its salamander-like ancestors, it only had a small tail supported by six vertebrae.

Detailed explanation-5: -When researchers trained a ultraviolet A flashlight (or black light) on polka dot tree frogs collected near Santa Fe, Argentina, they were astonished to find the animals gave off an intense greenish-blue glow instead of a faint red.

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