28. Plants

Seedless Vascular Plants

Fern Plants and their Life Cycle (seedless, vascular) updated

No. Gametophytes are involved in sexual reproduction.

found on the underside of fern leaves (fronds)

Review the life cycle of ferns.

Fern gametophytes are __________.

Lycophytes: Early Vascular Plants

They are modified leaves that have sporangia.

No. Sporophylls are modified leaves that have sporangia.

No. Lignified vascular tissue allows plants to grow taller.

They provide a way to transport water and nutrients throughout the plant's body.

No. Vascular tissue provides transport of water and nutrients throughout a plant's body.

They increase the surface area for absorption of nutrients.

No. Roots are used for absorption of nutrients.

They increase the surface area for photosynthesis.

Megaphylls are leaves.

What is the evolutionary significance of megaphylls?

Seedless, Vascular Plants

Seedless Vascular Plant Life Cycle

Soils, water, and the atmosphere are major components of the abiotic (nonliving) environment. Describe how green plants affect the abiotic environment in ways that are advantageous to humans.

No. Removing CO2 from the atmosphere would lessen the greenhouse effect and cool the atmosphere.

a lack of CO2 for photosynthesis

No. Although there is evidence that CO2 levels were decreased significantly, there was still enough CO2 for effective photosynthesis to continue.

the formation of fewer stomata in plant leaves

No. A decrease in CO2 levels would cause an increase in the number of stomata in plant leaves.

seed plants to become the dominant types of plants on Earth

No. There is no evidence that the drop in CO2 levels caused seed plants to rise in prominence.

Today we are putting much of that CO2 back into the atmosphere by burning the coal that was formed during this period.

The first large forests formed in the Carboniferous period. The decrease in CO2 levels by all of these plants caused __________.

Microphylls are found in which plant group?
a. lycophytes
b. liverworts
c. ferns
d. hornworts

No. The leaves of sporophyte ferns are megaphylls.

No. Protonemata are small filamentous structures produced by germinating moss spores.

No. Kelps have photosynthetic organs known as blades.

Consider the two forms of leaves in nonvascular plants.

In sporophyte ferns, the leaves are __________.

Attached to the underground stem (rhizoids)

No. The small heart-shaped gametophytes grow on or just below the soil level in moist areas.

No. Ferns are seedless plants. The small heart-shaped gametophyte grows on or just below the soil level in moist areas.

Remember that you would have to get down on your hands and knees.

Where would you find a fern gametophyte?

No. An archegonium is a female structure.

No. Fern leaves are called fronds.

In the life cycle of a fern, the multicellular male gametangium (the sex organ that produces sperm cells) is called a(n) __________.

No. The mature diploid sporophyte produces haploid spores by meiosis. These spores are encased in sporangia.

Consider what is produced by meiosis.

To examine meiosis in ferns, you would study __________.

No. A rhizome is an underground structure.

In the life cycle of ferns, the multicellular female gametangium (the sex organ that contains an egg) is a(n) __________.

xylem for conducting organic molecules and phloem for conducting water and minerals

No. You are right about the names of the tissues but wrong about the functions of each tissue.

lignin for conducting organic molecules and phloem for conducting sugars

No. Although phloem does conduct sugars, lignin plays a role in structural support.

phloem for conducting water and minerals and lignin for conducting organic molecules

No. Xylem conducts water and minerals. Lignin is involved in structural support.

cuticles for conducting water and phloem for conducting organic molecules

No. Although phloem does conduct organic molecules, cuticles protect against water loss.

xylem for conducting water and minerals and phloem for conducting dissolved organic molecules

What are the functions of the different types of vascular tissue in plants?

Vascular tissues of plants include __________.

No. The spots on the underside of reproductive leaves are sori, which release spores, indicating the parent plant is a sporophyte, or spore-producing organism.

The "dots" are sori.

The "dots" on the underside of a fern frond are spore cases; therefore, what is true of the plant to which the frond belongs?

Ferns: The Emergence of Roots and Stems

Seedless Vascular Plants (ferns)

Learn the toughest concepts covered in Biology1&2 with step-by-step video tutorials and practice problems by world-class tutors 

Jason

General Biology

https://static.studychannel.pearsonprd.tech/courses/biology/thumbnails/biology

#FFFFFF

Craig Savage

Professor Newtoff

Professor Dave Explains

Jason Amores Sumpter

Baylor Tutoring Center

Beverly Biology

1. Introduction to Biology

2. Chemistry

3. Water

4. Biomolecules

5. Cell Components

6. The Membrane

7. Energy and Metabolism

8. Respiration

9. Photosynthesis

10. Cell Signaling

11. Cell Division

12. Meiosis

13. Mendelian Genetics

14. DNA Synthesis

15. Gene Expression

16. Regulation of Expression

17. Viruses

18. Biotechnology

19. Genomics

20. Development

21. Evolution by Natural Selection

22. Evolution of Populations

23. Speciation

24. History of Life on Earth

25. Phylogeny