Question

Which plant is found in the mangrove zone?
(a) Rhizophora
(b) Acacia
(c) Pinus
(d) Tectona grandis

Answer 1

Hint: These plants belong to the family Rhizophoraceae. Also, these plants are having aerial prop roots, which arch above the water level, giving this tree the characteristic mangrove appearance.

Complete answer:
Rhizophora belongs to the genus of tropical mangrove trees, sometimes they're collectively called true mangroves. The most notable species is the red mangrove. In estuarine ecosystems, it is distributed throughout the tropics.

Additional Information: -Generally, the Rhizophora species live in intertidal zones that are overloaded daily by the ocean. -They exhibit a number of adaptations to this environment, including pneumatophores that elevate the plants above the water and allow them to respire oxygen even while their lower roots are submerged and a cytological molecular pump mechanism is present that helps them to remove excess salts out from their cells.
-The mangrove zone consists of the intertidal coastal area lying between the spring high tide line and the spring low tide line.
-These are protected coastal waters encompassing a wide range of plant and animal communities. -These communities are capable of tolerating extremes in inundation, drying, salinity, exposure, and storm damage and occur generally in the tropical and subtropical zones between latitudes 32° N and 38° S, gradually grading into salt marshes at both of these extremes as more frequent freezing events occur.
So, the correct answer is, 'Rhizophora'.

Note: -Earlier in 1970, mangroves were generally treated as coastal swamps of little value to ecological processes or human society.
-Mangroves are the sole trees that are capable of thriving in saltwater.
-Estuarine ecosystem is that ecosystem of a partially enclosed body of water, and its surrounding coastal habitats, where saltwater from the ocean typically mixes with water from rivers or streams.