Buttress roots are

Aerial

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Vertical

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Aquatic

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Horizontal

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Solution

The correct option is D Horizontal
Buttress root extends above ground as a plate-like an outgrowth of the trunk supporting the tree. Buttress roots are mainly found in trees of tropical rainforests. These roots spread horizontally, so they are able to cover a wider area for collecting nutrients. They stay near the upper soil layer because all the main nutrients are found there.
Hence, the correct option is D.

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Q. The following sentences come from a paragraph. The first and the last sentences are given. Choose the order in which the four sentences (PQRS) should appear to complete the paragraph.

S1: A common feature of many tropical rainforests is the distinct buttress roots of trees.
P: These roots also aid in water uptake and storage, increase surface area for gas exchange, and collect leaf litter for added nutrition.
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R: Because of this, the buttress roots occur at the surface so the trees can maximise uptake and actively compete with the other trees. S: Most of the nutrients within the soil of a tropical rainforest occur near the surface because of decomposition of organisms and leaves. S6: Additionally, these roots reduce soil erosion and maximise nutrient acquisition during heavy rains. The proper sequence should be:

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The "pragmatic approach" mentioned in the line "This pragmatic approach is buttressed by Arizona vs. California" is best defined as one that ________________.

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