Ch. 21 Quiz

Question 1

Features present in living groups of plants that are similar to very early species are said to be

Answer 1

Relictual

Question 2

The most important structural characteristic that suggests that the group ancestral to the ferns was the Rhyniophyta is the

Answer 2

Position of the sporangia

Question 3

Although Psilotum and Rhynia are sometimes classified in the same division because of their similar structure, they are not exactly alike because Rhynia lacks

Answer 3

Enations

Question 4

Early lycophytes are thought to have evolved from

Answer 4

Zosterophyllum-like plants

Question 5

A sorus is

Answer 5

Group of sporangia on the underside of a fern leaf

Question 6

The evolution of seeds and pollen eliminated the requirement in those plants for

Answer 6

An environment wet enough for transport of sperm to the egg

Question 7

Microphylls evolved from

Answer 7

Enations that became vascularized

Question 8

The Monilophytes include all of the following except

Answer 8

Lycopods

Question 9

Megaphylls evolved from

Answer 9

Microphylls that became more elaborate due to hormonal interactions

Question 10

The height that many plants exhibit was made possible principally by the evolution of

Answer 10

Xylem and phloem