chapter 9- fungi and algae

Question 1

gametangia

Answer 1

a specialized organ or cell in which gametes are formed

Question 2

dikaryotic

Answer 2

A hypha occurring after sexual reproduction. each contains 2 nuclei from each parent.

Question 3

Basidiomycetes

club fungi

Answer 3

a phylum of Fungi… have a basidia

Question 4

parasite

Answer 4

An organism that lives off another and benefits while its host suffers

Question 5

Ascomycetes

Sac fungi

Answer 5

a phylum of fungi… have an ascus

ex. molds, yeasts

Question 6

Hypha

Answer 6

each of the branching filaments that make up the mycelium

Question 7

mycorrhiza

Answer 7

A fungus that grows in association with the roots of a plant (symbiotic)

Question 8

sporophyte

Answer 8

asexual and usually diploid phase

Question 9

zygote

Answer 9

A diploid cell from the fusion of two haploid gametes

Question 10

red algae

Answer 10

a group of algae that includes many seaweeds
(mainly red in colour)

ex.agar

Question 11

Spirogyra

Answer 11

A filamentous freshwater green algae containing spiral bands of chloroplast

Question 12

zygomycetes

Answer 12

Phylum of fungi…
have a sporangium

ex.bread molds

Question 13

spore

Answer 13

reproductive unit (reproduces withought sexual reproduction)

Question 14

mycelium

Answer 14

the vegetative part of a fungus, consisting of a network of hyphae

Question 15

chlamydomonas

Answer 15

a common single called green algae that lives in water and mouse soil and typically has two flagella for swimming

Question 16

3 reasons why fungus were classified as plants

Answer 16

1. have a cell wall
2. quite often body parts anchored in the ground ( immobile)
3. will reproduce by means of spore production (asexual)

Question 17

3 reasons why fungus are not classified as plants

Answer 17

1. do not photosynthesize
2. are heterotrophic, digestion is extracellular by the secretion of enzymes ( absorbs nutrients)
3. Are not anchored in the ground by a true root structure

Question 18

4 reasons why fungi can be helpful or harmful to other living things

Answer 18

1. decay food
2. causes diseases and infections ex.athlete’s foot
3. recycle by decomposing dead organic matter( return nutrients back into ecosystem)
4. used to produce yeast, bread, alcohol

Question 19

what is a lichen?who is involved?

Answer 19

Lichen—> a simple slow growing plant that forms a low Christlike, leaflike or branching growth on rocks, walls and trees. formed from a symbiotic relationship of algae + fungus

Question 20

alternation of generation?

Answer 20

the cycle of plants

Question 21

two contributions made by algae to the environment

Answer 21

1. primary food producers in most aquatic food webs globally

2. supply 67% of global supply of oxygen

Question 22

4 main types of algae

Answer 22

1. chlamydomonas-single called( mitosis like division)
2. spirogyra-filamentous shaped ( long strands)
3. ulva( sea lettuce)-shows alternation of a life cycle
4. Volvex-colonial green algae