What is avicennia sp?
Avicennia is a genus of flowering plants currently placed in the bear’s breeches family, Acanthaceae. It contains mangrove trees, which occur in the intertidal zones of estuarine areas and are characterized by its “pencil roots”, which are aerial roots.
What is the common name of avicennia?
Avicennia officinalis L.
| Family Name: | Acanthaceae |
|---|---|
| Synonyms: | Avicennia tomentosa Willd. |
| Common Name: | Api Api Ludat |
Is avicennia a mangrove plant?
Avicennia, also called black mangrove, genus comprising at least eight species of trees or shrubs in the family Acanthaceae. Avicennia has a wide geographical distribution, with members found in intertidal estuaries along many of the world’s tropical and warm temperate coasts.
Where are Avicennia found?
Found on riverbanks, mouth of rivers, lagoons, rocky beaches and lower tidal areas. Avicennia species are usually pioneer species in newly formed mangrove forests.
Why are black mangroves important?
Erosion control: Black mangrove is valuable in restoring brackish and salt water marshes due to its ability to filter and trap sediments. Mangrove forests, which include black mangrove, have a high capacity as a sink for excess nutrients and pollutants. It also mixes well with other native plants to reduce wave energy.
What kind of plant is Avicennia?
Avicennia germinans (Black Mangrove) is a medium-sized, evergreen shrub or tree with a rounded, densely foliated crown of spreading branches. It bears thick, elliptic, simple and opposite leaves, 2-3 in. long (5-7 cm). Smooth and leathery, they are dark green above and silver-white underneath.
Which plant shows Vivipary?
Rhizophora
A plant which shows viviparous germination is Rhizophora.
What is the difference between red and black mangroves?
Black Mangroves Avicennia germinans, the black mangrove, is characterized by long horizontal roots and root-like projections known as pneumatophores. It grows at elevations slightly higher than the red mangrove where tidal change exposes the roots to air.
How do you identify black mangroves?
Black mangroves have a similar leaf shape to red, but they’re almost white underneath from excreting salt. If you stumble across a black mangrove, be sure to lick a leaf – they taste great! They also have pneumatophores; meaning their roots slip beneath the surface and then shoot projections back up out of the ground.
What is the purpose of knee roots?
Knee roots are developed by Bruguiera species. Knee roots emerge as a root loop from the underground root system and allow the exchange of gases in oxygen-poor sediments. Each underground horizontally growing root develops several knee roots at regular intervals.
What are vivipary 3 examples?
Human beings, dogs, cats, elephants, etc are few examples of viviparous animals.
Why does vivipary occur?
Vivipary is the condition whereby the embryo (the young plant within the seed) grows first to break through the seed coat then out of the fruit wall while still attached to the parent plant. This condition is found in Bruguiera, Ceriops, Kandelia and Rhizophora species (Mangrove plants).