Mangrove
What is the habitat of the mangrove plant?
Beach side/ Sea side/ Swamp
What is an environment?
it refers to everything around the organism
What is the habitat of marram grass?
desert
What is an abiotic factor and give an example
a non-living factor that affects the organism like pH, salinity, temperature, wind, soil structure
What is a biotic factor and give an example.
A living organism that affects a population, for example predators, mate selection, symbiosis, parasitism, competition
Give 2 challenges that the mangrove plant experiences
muddy soil, high salinity water, high tide
why does the leaf have thick waxy cuticle?
to reduce water loss by transpiration
Where are the stoma found and why?
at the based of hairy furrows - stay in humid environment and not exposed to wind
Name the 3 types of roots found in Mangrove plants?
Cable roots, stilt roots and pneumatophores
they are large and buoyant - so that it can be dispersed by water currents
Give 3 challenges experienced by marram grass
Sand accumulation, high salt concentration in soil, water conservation
the slow down the loss of water vapour/ rate of transpiration
Where is mannitol produced and what is its function?
How do the leaves of mangrove plants adapt to salinity?
leaves have salt glands to secrete salt
what are rhizomes and how do they adapt?
they are stems that grow upward above the sand and grow deep into the dunes to obtain water
Why do the leaves roll-up?
it creates a space for humidity/ water vapour to increase.
What is a pneumatophore?
roots that grow up in the air to absorb oxygen
What is suberin? and what is its function?
it coats the epidermis of the roots. It reduces permeability to salt and prevents excessive uptake
what is the function of sclerenchyma tissue?
in the leaves, it shrinks to cause the leaves to roll up
What are fructans? what is their function?
roots cells accumulate fructans in their cells to increase osmotic potential