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In botany, a cortex is an outer layer of a stem or root in a vascular plant, lying below the epidermis but outside of the vascular bundles. [1] The cortex is composed mostly of large thin-walled parenchyma cells of the ground tissue system and shows little to no structural differentiation. [ 2 ]
A true root system consists of a primary root and secondary roots (or lateral roots). the diffuse root system: the primary root is not dominant; the whole root system is fibrous and branches in all directions. Most common in monocots. The main function of the fibrous root is to anchor the plant.
Nguyễn Hải Dương (born in Phong Điền District in Thừa Thiên Huế province on 15 April 1943) pen name and political name Nguyễn Khoa Điềm is a Vietnamese poet and government literary official. [1] [2] [3] He graduated from Hanoi National University of Education. [4] His work is included in the book, Six Vietnamese Poets. [5]
Parenchyma is a versatile ground tissue that generally constitutes the "filler" tissue in soft parts of plants. It forms, among other things, the cortex (outer region) and pith (central region) of stems, the cortex of roots, the mesophyll of leaves, the pulp of fruits, and the endosperm of seeds.
Cold War Mandarin: Ngo Dinh Diem and the Origins of America's War in Vietnam, 1950–1963. Lanham, Maryland: Rowman & Littlefield. ISBN 0-7425-4447-8. Jones, Howard (2003). Death of a Generation: how the assassinations of Diem and JFK prolonged the Vietnam War. New York: Oxford University Press. ISBN 0-19-505286-2. Karnow, Stanley (1997).
Root hair cells vary between 15 and 17 micrometers in diameter, and 80 and 1,500 micrometers in length. [5] Root hairs are found only in the zone of maturation, also called the zone of differentiation. [6] They are not found in the zone of elongation, possibly because older root hairs are sheared off as the root elongates and moves through the ...
Panax vietnamensis faces a number of threats to its survival as a species in Vietnam. With increased demand from the herbal medicine industry, locals have over-harvested the plant in the wild. [ 4 ] The species is slow-growing, taking around 10 years to reach maturity. [ 3 ]
President Ngo Dinh Diem and family at his home in Hue (Central Viet Nam).jpg; President Ngo Dinh Diem on an inspection tour 350 km from Saigon (December, 1956).jpg; Portrait of Ngô Đình Diệm, from the book Ngo Dinh Diem of Viet-Nam.jpg; President Ngo Dinh Diem with the troops who defeated the Binh-Xuyen at Rung-Sat (May, 1955).jpg