Angiosperm

The Microsporangium & the Male Gametophyte

Microsporangium: The sporangium that is connected with the production of microspores (pollen grains) eventually development of male gametophyte is known as microsporangium. Microsporangia are produced on stamen where each stamen has a bilobed anther (each lobe has two microsporangia), connective and anther filament. When anther produces four elongated microsporangia, the …

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Dendrochronology: An Age Teller of Trees

“Dendrochonology”- a word derived from three ancient Greek words, which are: dendron,khronos and logia,stands for the science of calculating a tree’s age by it’s rings.The three Greek words :dendron,khronos and logia stands respectively for ‘tree’,’time’ and ‘the study of’. Short history of Dendrochronology: Greek botanist Theophrastus first mentioned that the …

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Bonsai : An Art Of Miniaturizing Trees

Bonsai is a Japanese art. This term bonsai may be used to refer the art of miniaturizing trees but Usually it is more than an art form. The word “Bon-sai” is a Japanese word which, means “planted in a container”. This art form is derived from an ancient Chinese horticultural …

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The Breadfruit: An Introduced Species of Bangladesh

Breadfruit is a species of flowering tree in the mulberry and jackfruit family.Its name is derived from the texture of the moderately ripe fruit when cooked, similar to freshly baked bread and having a potato like flavor.the taxonomic classification is following: Family: Moraceae Genus: Artocarpus Species: A. altilis History Originally …

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The Origin of the Words ‘Aam’ and ‘Mango’

আমের বৈজ্ঞানিক নাম Mangifera indica. নামটির প্রজাতির অংশ শুনলেই কিছুটা ধারণা করা যায় এটির উৎপত্তি ভারতে।  হ্যা, আমাদের পার্শ্ববর্তী দেশ ভারতের হিমালয়ে, ইন্দো-বার্মার সীমারেখা ঘেঁষে অনেক বছর আগে আমের এই নামের যাত্রা শুরু হয়েছিল। সেসময় ভারতের পুঁথিগত ভাষা ছিল সংস্কৃত। সংস্কৃতে এই আমকে বলা হত ‘আম্র’। বর্তমানের আম ফলকে একসাথে …

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