Question

1. what controls the development of sperm?

thyroid
testicles
thymus
pineal gland

1. define thymo-.

glassy
pinecone
shield
soul or flowery

Explanation:

For question 7, the testicles (testes) are the male reproductive organs that produce sperm and secrete male - sex hormones, controlling sperm development. The thyroid is involved in metabolism regulation, the thymus is related to the immune system, and the pineal gland is associated with sleep - wake cycles.
For question 8, the prefix "thymo -" can mean shield, as seen in the thymus gland which was named for its shape resembling a shield.

Answer:

1. B. Testicles
2. C. Shield