Many Physical Plant Defenses Only Work Against a Specific Scale

question 97

Multiple Choice

Many physical plant defenses only work against a specific scale of herbivore-for example, spines can be too large to deter small insects, while trichomes can be too small to deter animal herbivores. Which of the following defenses deters herbivory at multiple scales by combining different modes of action?

• A)silica plates in grass epidermal cells
• B)alkaloid vincristine found in periwinkle
• C)latex found in milkweed
• D)terpene derivative pyrethrin found in chrysanthemums

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Definitions:

Differentiated Product

A product that is distinguished from similar products offered by competitors through unique features, branding, or quality, allowing the company to potentially command a higher price.

Homogeneous Product

A product that is seen as identical across different producers, making consumers indifferent between brands based on the product itself.

Oligopoly

A market structure characterized by a few firms dominating the market, often leading to collusive behavior and strategic planning.

Degrees of Competition

The extent to which market competition exists, characterized by the number of firms, product differentiation, and barriers to entry.