Lecture 6 - Pteridophytes Part 1 2022 (1)

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14 Terms

1
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What are the two major leaf types in extant tracheophytes?

Microphylls and Megaphylls.

2
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What are the two subdivisions of Tracheophytes based on leaf type?

Lycophytes (microphylls) and Euphyllophytes (megaphylls).

3
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What characteristic is unique to Lycophytes compared to Euphyllophytes?

Lycophytes have microphyll leaves, while Euphyllophytes have megaphyll leaves.

4
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What is the term used for the free-sporing vascular plants?

Pteridophytes.

5
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Which group of plants includes club mosses, spike mosses, and quillworts?

Lycophytes.

6
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What are the two types of spore production in Selaginellales and Isoetales?

Heterospory, producing microspores and megaspores.

7
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What distinguishes Eusporangiate Monilophytes from other fern groups?

They have larger sporangia derived from several epidermal cells.

8
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What is a notable feature of the stem structure in Equisetales?

Ribbed stems associated with internal hollow canals.

9
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What evolutionary significance do the Lycophytes hold according to the notes?

They comprise some of the most primitive lineages of vascular plants.

10
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What is a characteristic feature of Lycophylls?

Simple leaves with a single, unbranched vein.

11
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What type of vascular tissue do Euphyllophytes typically possess?

Exarch protoxylem.

12
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What are the two main groups of Monilophytes?

Leptosporangiate and Eusporangiate ferns.

13
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What role do rhizomes play in the life cycle of Psilotales?

They serve as the horizontal structure from which aerial stems arise.

14
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In Monilophytes, what is the difference between microsporangia and megasporangia?

Microsporangia produce microspores (male), and megasporangia produce megaspores (female).