Science Practice: Chapter 21.
Felipe Rodríguez.
1. Write down four characteristics of plants; make sure you include the most important
characteristics, which differentiate plants from other organisms.
a)
b)
c)
d)
2. What substances make plants look green?
a)
3. What is the name of the diploid state of the plant?
a)
4. What is the name of the haploid state of the plant?
a)
5. What is the name of the final product after sporophytes undergo meiosis?
a)
6. What is the name of the final product after gametophytes undergo mitosis?
a)
7. What is the difference between these two reproductive cells?
a)
8. What is a zygote? And what name does it acquire after developing?
a)
b)
9. When does the embryo separate from the mother plant?
a)
10. Give two reasons that support the following statement: “Plants play a crucial ecological
role”.
a)
b)
11. What is the current plant ancestor?
a)
12. What is an advantage for plants, when they live on land?
a)
13. What are five adaptations plants gained when they started living on land? What is their
function?
a)
b)
c)
d)
e)
14. What are the two major groups of plants? What characteristic distinguishes them?
a)
b)
c)
15. What is the name of the root-like structure of non-vascular plants?
a)
16. What are the three mayor groups of non-vascular plants?
a)
b)
c)
17. What are archegonia and antheridia? Which is male and which is female?
a)
b)
18. What are the two types of vascular plants? Which two characteristic distinguishes them?
a)
b)
c)
d)
19. Club Mosses, Horsetails and Ferns are included in which group of plants?
a)
20. What is the name of the reproductive structure of Ferns?
a)
21. What are the two main characteristics of Seed Plants? Define each one.
a)
b)
22. What three characteristics that a seed has?
a)
b)
c)
23. What are the two types of Seed Plants? Which two characteristic differentiates them?
a)
b)
c)
d)
24. What are the four main groups of non-flowering plants?
a)
b)
c)
d)
25. The old welwitschia is a plant that grows only two leaves. To which group does it belong?
a)
26. What is the name of the reproductive structure of conifers?
a)
27. “They have dominated the plant kingdom for 100 million years.” This statement makes
clear reference to the plant group called…
a)
28. What are the three main characteristic of flowering plants? How do they contribute to the
domain of this kind of plant?
a)
b)
c)
29. How do mosses survive to dry climates?
a)
30. If you had to chose a mayor group of plants, and a phylum (for example hornworts,
mosses, ferns, conifers) of that group, which one would you chose? And why? Tell
everything you know about this group.