Shomu Mukherjee died of liver failure.
The flowering plants -LRB- angiosperms -RRB- , also known as Angiospermae or Magnoliophyta , are the most diverse group of land plants , with 416 families , approx .. land plants. Embryophyte. 13,164 known genera and a total of c. 295,383 known species .. Like gymnosperms , angiosperms are seed-producing plants ; they are distinguished from gymnosperms by characteristics including flowers , endosperm within the seeds , and the production of fruits that contain the seeds .. seed-producing plants. Spermatophyte. characteristics. character ( biology ). endosperm. endosperm. Etymologically , angiosperm means a plant that produces seeds within an enclosure , in other words , a fruiting plant .. The term `` angiosperm '' comes from the Greek composite word -LRB- angeion , `` case '' or `` casing '' , and sperma , `` seed '' -RRB- meaning `` enclosed seeds '' , after the enclosed condition of the seeds .. Greek. Greek language. The ancestors of flowering plants diverged from gymnosperms in the Triassic Period , during the range 245 to 202 million years ago -LRB- mya -RRB- , and the first flowering plants are known from 160 mya .. Triassic Period. Triassic. They diversified extensively during the Lower Cretaceous , became widespread by 120 mya , and replaced conifers as the dominant trees from 100 to 60 mya .. Lower Cretaceous. Lower Cretaceous