Fossil evidence and genetic analyses indicate that the first animal evolved from colonies of __________________ about 600 million years ago.
Have a lateral line to detect vibrations.
Have a lateral line to detect vibrations.
These animals have a closed circulatory system and nephridia…
These animals have a closed circulatory system and nephridia.
Members include leeches.
Members include leeches.
Bonus question – Which shark is the largest shark?
Bonus question – Which shark is the largest shark?
Members include lancelets.
Members include lancelets.
A corkscrew-shaped bacterium would be classified as a
A corkscrew-shaped bacterium would be classified as a
Which one has club-like reproductive structures?
Which one has club-like reproductive structures?
Which of the following protists have chloroplasts, which all…
Which of the following protists have chloroplasts, which allows them to convert light into usable energy just like the plants?
Which one would form sheet-like colonies of cells?
Which one would form sheet-like colonies of cells?