Which Interaction Would Be Considered a Mutualism

question 24

Multiple Choice

Which interaction would be considered a mutualism?

• A) A bumble bee pollinates a tomato plant and receives pollen in return.
• B) A cattle egret in a pasture feeds on insects stirred up by cattle hooves.
• C) A deer tick drops from a deer and is later picked up by a passing dog.
• D) Introduced lionfish in the Caribbean feed on the same small fish as native fish do.
• E) The excrement of a flock of birds nesting in a tree kills vegetation under the tree.

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Definitions:

Lymph Follicles

Small, organized centers found within lymphoid tissues that contain densely packed lymphocytes, involved in immune responses.

Axillary Nodes

Lymph nodes located in the armpit region that filter lymph fluid as part of the immune system.

Lymphatic Vessels

Thin-walled tubes that carry lymph, a fluid containing white blood cells and waste products, back towards the heart to be returned to the blood circulation.

Red Pulp

A tissue in the spleen composed of blood-filled sinuses and spaces filled with macrophages, playing a role in filtering blood.