Green Algae and Plant Evolution

Which of the following is a synapomorphy of Streptophyta?

Rosette-shaped cellulose synthase complexes

Which group is currently considered the closest algal relative (sister group) of land plants?

Zygnematophyceae

Which alga is given as an example of oogamy in the Chlamydomonadales?

Volvox

Which description fits Chlamydomonas?

A unicellular alga with two equal-length anterior flagella

Isogamy is best defined as sexual reproduction with

motile gametes of the same size

What are gonidia in Volvox?

Large reproductive cells that divide to form new daughter colonies

Why is Eudorina considered an intermediate stage in the evolution of sexual reproduction?

It is anisogamous, between the isogamy of Chlamydomonas and the oogamy of Volvox

Which description fits the body of Ulva?

Leaf-like blades two cell layers thick, anchored by a basal holdfast

What is the red eyespot (stigma) of Chlamydomonas used for?

Phototaxis, movement toward light

Which sequence shows the trend in gamete type from ancestral to derived?

Isogamy, then anisogamy, then oogamy