By What Mechanism Does a Second Male Mating with a Female

question 4

Multiple Choice

By what mechanism does a second male mating with a female gain an advantage in sperm competition in some insects?

• A)The second male's semen has chemicals that kill the first male's sperm.
• B)The accessory fluids from the second male's semen can displace stored sperm from competing males.
• C)The second male will have larger testes and so produce larger numbers of sperm.
• D)The second male is larger than the first male.

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Definitions:

Cell Body

The part of a neuron that contains the nucleus and most of the cytoplasm and organelles, serving as the metabolic center of the neuron.

Skeletal Muscle

Skeletal muscle is a type of muscle tissue that is attached to bones and is responsible for voluntary movements in the body.

Bones

Rigid organs that constitute part of the endoskeleton of vertebrates, supporting body structures and facilitating movement.

Large Arteries

Blood vessels that carry oxygen-rich blood away from the heart to various parts of the body, characterized by their large diameter and elastic walls.