Quiz 2

Question 1

Kingdom plantae consists of ______ ________ organisms that are ______, contain ______ ___ & ___ and exhibit _____ ___ ___

Answer 1

• eukaryotic
• multicellular
• autotrophic
• chlorophylls A & B
• cellulosic cell walls

Question 2

All plants and plant like organisms exhibit ____ of ____ life cycle, where the _______ generation is __N and the _____ generation is __N

Answer 2

• Alternation of Generations
• sporophyte generation
• 2N
• gametophyte generation
• 1N

Question 3

5 phyla’s (first group) that reproduces via the production of SPORES, not seeds, and requires the presence of external water for reproduction to occur

Answer 3

1. Phylum Hepatophyta
2. Phylum Bryophyta
3. Phylum Anthocerophyta
4. Phylum Lycopodiophyta
5. Phylum Pteridophyta

Question 4

Phylum Hepatophyta (3)

Answer 4

Liverworts

6,500 species

(Non vascular, 1N)

Question 5

Phylum Bryophyta

Answer 5

Mosses

12,000 species

• largest group of the nonvascular phylum

Question 6

Phylum Anthocerophyta

Answer 6

Hornworts

100 species

*smallest nonvascular species

Question 7

Phylum Lycophytes

Answer 7

Lycophytes

1,000 species

(Vascular, 2N)

Question 8

Phylum Pteridophyta

Answer 8

Ferns and allies

12,000 species

• largest of vascular phylum

Question 9

Which 3 phyla reproduce via spores, lack vascular tissues and exhibit an Alteration of Generations where the 1N gametophyte is the dominant portion of the life cycle

• spores
• nonvascular
• 1N (gametophyte)

Answer 9

1. Phylum Hepatophyta
2. Phylum Bryophyta
3. Phylum Anthocerophyta

Question 10

Which 2 phyla reproduce via spores, possess vascular tissues and exhibit an Alternation of Generations where the 2N sporophyte is the dominant portion of the life cycle

• vascular
• 2N

Answer 10

4. Phylum Lycopodiophyta

5. Phylum Pteridophyta

Question 11

1. What are some differences between liverworts and mosses ?

Answer 11

• liverworts: 6,500 species

- mosses: 12,000 species

Question 12

2. Why do you think that liverworts and mosses are short plants (less than 0.5 meter)

Answer 12

Because they lack vascular tissue (xylem (water) & phloem (food))

Question 13

3. What is the chromosome condition of the spores produced 1N or 2N

Answer 13

1N - haploid, 1 set of chromosomes (gametophyte)

2N diploid, 2 sets of chromosomes (sporophyte)

Question 14

What process produces the spores

Answer 14

Meosis

Question 15

How many cells thick is the moss leaf

Answer 15

1 cell

Question 16

Why would external water be needed for fertilization

Answer 16

Swimming sperm outside of the plant body