Question

lo 2.4. what are lymph nodes?
tiny, round glands that produce hormones
small, bean - shaped structures responsible for filtering blood
bean - shaped organs that produce red blood cells
small, round structures responsible for filtering blood
small, bean - shaped structures responsible for filtering lymph fluid

Explanation:

Lymph nodes are small, bean - shaped structures. Their main function is to filter lymph fluid. Hormone - producing glands (like endocrine glands) are a different type of structure. Organs that produce red blood cells include the bone marrow (in adults). The spleen filters blood, not lymph nodes. So, we need to look for the option that mentions filtering lymph fluid and the bean - shaped structure.

Answer:

Small, bean - shaped structures responsible for filtering lymph fluid