Lab 4

Question 1

sporocytes

Answer 1

diploid cells where meiosis occurs in plants to form spores

Question 2

sporangia

Answer 2

reproductive organ of plants

Question 3

anther

Answer 3

where the sporangia is located

Question 4

alteration of generations

Answer 4

plants’ complex life cycle meaning they have distinct multicellular haploid and diploid stages

Question 5

gametophyte

Answer 5

the haploid generation where gametes (haploid egg and sperm) are produced

Question 6

sporophyte

Answer 6

the diploid generation that produces haploid spores

Question 7

spores

Answer 7

haploid cells that give rise to the multicellular haploid gametophyte generation which produce gametes by mitosis

Question 8

most plants are _______________ dominant

Answer 8

sporophyte

Question 9

rhizome

Answer 9

horizontal underground stem

Question 10

antheridia

Answer 10

male reproductive organ

Question 11

archegonia

Answer 11

female reproductive organ

Question 12

chiasma (plural: chiasmata)

Answer 12

where the exchange of genetic material occurs (prophase I)

Question 13

gene

Answer 13

a DNA sequence on a chromosome that codes for a specific characteristic of an organism (hair colour)

Question 14

allele

Answer 14

the particular form in which a gene exists (blonde, brown, black hair)

Question 15

sorus (sori)

Answer 15

cluster of sporangia

Question 16

What two events occur in prophase I of meiosis that do NOT occur in prophase of mitosis?

Answer 16

• homologous chromosomes pair up to form tetrads

- genetic exchange occurs between homologous chromosomes during a process called crossing over