What is duckweed?

Question

Tell me please.

Answer 1

Duckweed is the common name for a family of small aquatic herbs known as Lemnaceae that grows in fresh water. They have the unique distinction of being the smallest flowering plants on earth. These plants are also unique in that they do not have any stem or leaf structures. The plant is simply a fleshy ovoid or flattened structure that may or may not bear simple roots. These highly successful plants represent the ultimate in reduction for a vascular plant. Duckweed is ubiquitous to most temperate and tropical regions of the world, making it readily available to most farmers. They are typically found floating in thick mats of homogeneous populations in quiet streams or ponds containing high levels of organic matter. Another amazing feature of these plants is that they can double their mass in less than two days under ideal conditions of nutrient availability, sunlight and temperature. To put this into perspective, a small patch of duckweed could theoretically cover the entire surface of a 0.5-hectare pond in less than 50 days!

Answer 2

Lemnaceae is a botanical name for a family of flowering plants. It is also known as the "duckweed family", as it contains the duckweeds (also known as water lentils).

These plants are very simple, lacking a stem or leaves, but consisting of a small blade-like structure floating on or just under the water surface, with or without simple rootlets. Reproduction is mostly by budding, but occasionally a flower consisting of two stamens and a pistil (some call it an inflorescence with three unisexual flowers) is produced. The fruit is an utricle, a sac containing air and a seed designed to float. The flower of Wolffia is the smallest in the world at 0.3 mm long.

Duckweeds are an important food source for waterfowl and are eaten by humans in parts of Southeast Asia (as khai-nam). Some duckweeds are used in freshwater aquariums and ponds where they may spread rapidly, although in a large pond may be difficult to eradicate once established. The plants can provide nitrate removal (if cropped) and cover for fry. The plants are used as shelter by pond water species, such as bullfrogs and bluegills. The duckweeds are important in the process of bioremediation because they grow rapidly, absorbing excess mineral nutrients, particularly nitrogen and phosphates. A cover of duckweeds will reduce evaporation of water compared to a clear surface.

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Answer 3

Lemnaceae is a botanical name for a family of flowering plants. It is also known as the "duckweed family", as it contains the duckweeds (also known as water lentils).

These plants are very simple, lacking a stem or leaves, but consisting of a small blade-like structure floating on or just under the water surface, with or without simple rootlets. Reproduction is mostly by budding, but occasionally a flower consisting of two stamens and a pistil (some call it an inflorescence with three unisexual flowers) is produced. The fruit is an utricle, a sac containing air and a seed designed to float. The flower of Wolffia is the smallest in the world at 0.3 mm long.

Duckweeds are an important food source for waterfowl and are eaten by humans in parts of Southeast Asia (as khai-nam). Some duckweeds are used in freshwater aquariums and ponds where they may spread rapidly, although in a large pond may be difficult to eradicate once established. The plants can provide nitrate removal (if cropped) and cover for fry. The plants are used as shelter by pond water species, such as bullfrogs and bluegills. The duckweeds are important in the process of bioremediation because they grow rapidly, absorbing excess mineral nutrients, particularly nitrogen and phosphates. A cover of duckweeds will reduce evaporation of water compared to a clear surface
Such a family has been recognized by most systems of plant classification, but it is not recognized by the APG II system: this refers the plants involved to family Araceae, the aroid family.

Answer 4

its scientific name is wolfia. its the smallest flowering plant in the world.

Answer 5

Marihauna that can be smoked by a duck.