Which of the Following Is the Best Evolutionary Explanation for the Presence

question 100

Multiple Choice

Which of the following is the best evolutionary explanation for the presence of flagellated cells in the life cycles of chytrids and their absence from other fungi?

• A) Chytrids are specialized fungi that evolved this trait from fungal ancestors that lacked flagellated cells.
• B) Presence of flagellated cells in chytrids shows that they are more closely related to animals and choanoflagellates than to actual fungi.
• C) Chytrids evolved flagellated cells as an adaptation to living in water.
• D) Flagella have evolved repeatedly in many different eukaryotic groups, and their presence is evolutionarily meaningless.
• E) Flagellated cells in chytrids are a remnant of the common ancestry of fungi, animals, and choanoflagellates that has been lost in other fungi.

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Definitions:

Hydrologic Cycle

The continuous movement of water on, above, and below the surface of the Earth, including processes such as evaporation, precipitation, and runoff.

Mid-Ocean Ridges

Undersea mountain ranges where new oceanic crust is formed through volcanic activity and seafloor spreading.

Hot Springs

Natural springs that discharge water heated by geothermal processes from the Earth's interior.

Planet's Formation

The process by which a planet forms from the gas and dust surrounding a young star, typically through the accretion of material.