Which of the Following Is a Likely Explanation of Why

question 4

Multiple Choice

Which of the following is a likely explanation of why natural selection favored the evolution of signals for sexual reproduction?

• A) Even in the simplest organisms, sexual reproduction required several coordinated responses by cells.
• B) Multicellular eukaryotes required signals that were responded to by multiple organ systems.
• C) Cells of several kinds of mating types needed to sort themselves to allow self-recognition.
• D) Rooted plants required chemical diffusible signals that could travel throughout the organism.
• E) Hormones required a mechanism for introducing changes in their target tissues.

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Definitions:

Myoglobin

A protein in muscle cells that binds oxygen, providing a reserve supply of oxygen within muscles.

Muscular Disorder

A variety of diseases that affect the muscular system, impairing muscle strength, flexibility, and function.

Tendon

A flexible but inelastic cord of strong fibrous collagen tissue attaching a muscle to a bone.

Sports-related Activity

Any physical activity or exercise that is competitive, organized, and follows specific rules, often involving teamwork or individual challenge.