Which Finding Led to the Conclusion That Sea Squirts Are

question 58

Multiple Choice

Which finding led to the conclusion that sea squirts are more closely related to vertebrates than scientists had previously thought?

• A) Data from CT scans
• B) The finding that larvae have notochords
• C) The discovery of behavioral similarities in sea squirts and vertebrates
• D) Newly discovered fossils in China
• E) The development of maximum likelihood methods

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Definitions:

Bulbourethral Glands

Small glands located on either side of the urethra in males that secrete a fluid contributing to the lubrication of the urethra for spermatozoa to pass through.

Leydig Cells

Leydig cells, found in the testes, are responsible for the production of testosterone, a key hormone in the development of male secondary sexual characteristics.

Sustentacular Cells

Sustentacular cells, also known as supporting cells, provide physical support and nourishment to the spermatogenic cells within the seminiferous tubules of the testis.

Luteinizing Hormone

A hormone produced by the anterior pituitary gland that triggers ovulation in females and stimulates testosterone production in males.