TOKYO, Aug. 5 (Xinhua) -- Tokyo stocks plummeted Monday morning on heightened concerns over the future course of the globe economy amid escalating trade issues and the yen's rise.

Electric quotation board displays the Tokyo Stock Exchange share price (bottom) and the current exchange rate of the Japanese yen against the US dollar (upper) at a foreign exchange brokerage in Tokyo on August 5, 2019. (Photo: AFP)

The 225-issue Nikkei Stock Average dropped 496.29 points, or 2.35 percent, from Friday to 20,590.87.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, lost 36.85 points, or 2.40 percent, at 1,496.61.

All industry categories on the main section retreated into negative territory, with chemical, electric appliance, and glass and ceramic products-linked issues comprising those that declined the most.