​Which of the Following Invertebrates Is Most Closely Related to Vertebrates

question 82

Multiple Choice

​Which of the following invertebrates is most closely related to vertebrates?

• A) ​lancelets
• B) ​tunicates
• C) ​sea stars
• D) ​earthworms
• E) leeches​

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Definitions:

Metaphase II

A stage of meiosis II where sister chromatids align at the spindle equator, preparing for separation to opposite poles of the cell.

Secondary Oocyte

An immature egg cell that has completed the first meiotic division and is released during ovulation.

Prophase I

The first stage of meiosis I where chromosomes condense, pair up, and exchange genetic material through crossing over.

Mature Follicle

An ovarian follicle that has fully developed and is ready to release an egg during ovulation.