The Outer Ring of Leaflike Sepals That Serves to Protect

question 29

Multiple Choice

The outer ring of leaflike sepals that serves to protect the more delicate parts of a flower is referred to as the ____.

• A)carpel
• B)stamen
• C)corolla
• D)calyx
• E)ovule

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Definitions:

Activation Energy Barrier

The minimum amount of energy required for reactants to transform into products in a chemical reaction.

Catalyst

A material that accelerates a chemical reaction's speed without any lasting alteration to its own chemical structure.

Homogeneous Catalyst

A catalyst that exists in the same phase (solid, liquid, or gas) as the reactants, facilitating the reaction uniformly throughout the mixture.

Heterogeneous Catalyst

A catalyst that exists in a different phase (solid, liquid, or gas) than the reactants in a chemical reaction, facilitating the reaction without undergoing permanent change.