Date ______
Plant Diversity Web Activity
Name __________________
Plant Evolution: https://www.learner.org/courses/essential/life/session4/closer2.html
1. What was the environment of the ancestors of modern land plants?
2. What are the four groups of land plants that exist today?
3. Explain why organisms that live in water do not need strong support systems?
4. List two adaptations that allowed land plants to grow tall.
5. Explain why organisms that live in water do not need well developed transport systems.
6. What type of tissue allows land plants to transport materials throughout the organism (this
answer is not a the webpage)
7. How does the sperm cell reach the egg cell for an organism that lives in water?
8. What process did land plants evolve so that fertilization could occur on dry land?
9. Why did land plants evolve seeds?
10. What two groups of plant do not produce seeds?
NonVascular Plants (Moss) http://www.nhptv.org/natureworks/nwep14c.htm
1. Why are mosses usually restricted to moist habitats?
2. What is produced by the moss gametophyte?
3. What is produced and released by the moss sporophyte?
Date ______
Plant Diversity Web Activity
Name __________________
Seedless Vascular Plants (Ferns) http://www.nhptv.org/natureworks/nwep14ferns.htm
1. Where do ferns grow best?
2. What are fern leaves called?
3. What are the horizontal stems of ferns called?
4. In the diagram of the fern label the roots, fronds and rhizomes.
5. What is produced on the underside of the fronds?
6. What is produced by the gametophyte stage (prothallus) of a fern?
7. What is produced when a fern egg cell is fertilized by a sperm cell?
Date ______
Plant Diversity Web Activity
Name __________________
Division Coniferophyta: Gymnosperms
http://www.nhptv.org/natureworks/nwep14e.htm
1. Spruce, cedar, and pine trees are all examples of _______________.
2. About how many species of conifers are there? ________________________________________
3. What is the cup of a yew tree called?
____________________________________
4. Why do birds sometimes eat only the cup and leave the seeds of yew trees?
5. What type of gymnosperm resembles a palm, but is not really a palm?
_________________
6. What group of gymnosperms has only one surviving species? _____________________________
7. Where are Ginkgo biloba trees originally from? ________________________________________
Date ______
Plant Diversity Web Activity
Name __________________
Procedure: Visit the indicated websites and answer the following questions about plants
Division Anthophyta: Angiosperms
http://www.nhptv.org/natureworks/nwep14f.htm
1. Angiosperms are _________________ plants.
2. Where are angiosperm seeds found? _____________________________________________
3. What process must angiosperms go through before they can reproduce? ________________
4. What are the male sex organs of angiosperms? ____________________________________
5. Where is the pollen made in angiosperms? ________________________________________
6. What are the female sex organs of angiosperms? ___________________________________
7. Where is the pollen left on angiosperms? _________________________________________
8. What does cross-pollinate mean? _______________________________________________
___________________________________________________________________________
9. How many seed leaves do monocots start with? ________
10. How many seed leaves do dicots start with?
________
11. About how many species of monocots are there? ________________
12. About how many species of dicots are there? ___________________
Evolution of Angiosperms
http://biology.clc.uc.edu/courses/bio303/coevolution.htm
13.What is co-evolution? __________________________________________
________________________________________________________
14. How are plants such as, pines, grasses and ragweed pollinated?
__________________________________________
15. Why must these plants produce so much pollen?
_______________________________________________
_____________________________________
Date ______
Plant Diversity Web Activity
Name __________________
16. Today, over ______ of Angiosperms are insect-pollinated and _______ of insects, at least at some
stage, depend on flowers for their food.
17. What are the three things that a plant must supply in order to be
pollinated by insects.
____________________________________
______________________________________
A.
B. ____________________________________
______________________________________
____________________________________
______________________________________
C.
Monocots and Dicots
http://www.sciencemonster.com/life-science/monocots-dicots/monocots-dicots-01.html
18. What are some examples of plants that are monocots? ___________________________
19. What are some examples of plants that are dicots?
_______________________
20. What are the five signs that determine whether a plant is a monocot or dicot?
___________________________________________________________
_________________________________________________
________________________________________
______________________________________________________
21. What are cotyledons?
22. Looking at a flower how could you tell if the plant is a monocot or dicot?
___________________________________________________________
_________________________________________________
23. Describe the arrangement of the xylem and phloem in a monocot and dicot stem.
___________________________________________________________
_________________________________________________
Date ______
Plant Diversity Web Activity
Name __________________
24. In the space below sketch a cross section of a monocot stem and dicot stem. Label the xylem and
phloem.
Monocot
Dicot
25. Explain the vein pattern in both the monocot and dicot leaves.
___________________________________________________________
_________________________________________________
26. Identify each of the following pictures as monocots or dicots.
____________ ____________ ___________ ____________