AP BIOLOGY

PLANTS

ROOTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A tree root that extends above ground as a plate-like outgrowth of the trunk supporting the tree. They are mainly found in trees of tropical rain forests
A
adventitious roots
B
Casparian strip
C
fibrous root system
D
buttress root
Explanation: 

Detailed explanation-1: -As a plate-like outgrowth of the trunk that supports the tree, the buttress root extends above the ground. Buttress roots are found mostly in tropical rainforest trees.

Detailed explanation-2: -Buttress roots are large roots on all sides of a shallowly rooted tree. Typically, they are found in nutrient-poor rainforest soils and do not penetrate to deeper layers. They prevent the tree from falling over (hence the name buttress) while also gathering more nutrients.

Detailed explanation-3: -Emergent trees are supported by buttress roots which prevent them from blowing over in high winds.

Detailed explanation-4: -Buttress roots are found in Terminalia, Salmalia, Ficus, and Bombax etc. These buttress roots resist toppling in trees because they provide stability. Buttresses are larger on the side being away from the stress of asymmetrical canopies, these are tension elements.

Detailed explanation-5: -Buttress roots are aerial extensions of lateral surface roots and form only in certain species. Buttress roots stabilize the tree, especially in shallow saturated soils, thereby resisting toppling. They are common in certain tropical trees of wet lowland environments but, with few exceptions, such as…

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