Density = 2.69 g.cm⁻³
Data Given;
Density = ??
Mass = 37.1 g
Volume = 2.0 cm × 5.5 cm × 1.25 cm = 13.75 cm³
Formula Used;
Density = Mass ÷ Volume
Putting values,
Density = 37.1 g ÷ 13.75 cm³
Density = 2.69 g.cm⁻³
prop the trees up above the water line
b.
excrete excess salt
c.
absorb carbon dioxide from the air
d.
none of the above
Correct answer: A). Prop the trees up above the water line
Mangrove pneumatophore is the specialized root structures that are known to grow out of the water surface and help in the respiration of mangrove plants. They allow the collect oxygen from the atmosphere.
It mainly grows in mud and there the conditions are anaerobic means lack of oxygen. Oxygen is necessary for their survival that is done by the mangrove pneumatophore roots.
Hence, the correct answer would be option A.
Mangrove pneumatophore roots mainly prop the trees up above the water line to intake necessary oxygen from the air for survival, but they do not practically absorb carbon dioxide from the air.
Mangrove pneumatophore roots have a distinctive function in the survival of Mangrove trees in their saline, oxygen-poor environments. The correct answer to your question is that mangrove pneumatophore roots indeed prop the trees up above the water line (option a). These roots emerge from the water, allowing Mangrove trees to intake the necessary oxygen for survival. While they also partake in the limited excretion of excess salt, their main function is undeniably oxygen absorption from the air and supporting their physical structure.
However, the roots do not absorb carbon dioxide from the air (option c). Thus, although options a and b reflect partial truth, option a accurately captures the characteristic function of pneumatophore roots.
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