Biology U1 L4 - Algae: Plantlike Protists

Front 1

body structure from some plants/algae that lacks roots, stems, and leaves

Back 1

thallus

Front 2

group of unicellar or multicellular organisms that live together

Back 2

colony

Front 3

type of asexual reproduction in algae where an individual breaks into two pieces and each forms a new individual

Back 3

fragmentation

Front 4

type of life cycle where an organism changes between a haploid gametophyte generation and a diploid sporophyte generation

Back 4

alternation of generations

Front 5

haploid form in the "alternation of generation" cycle that produces gametes

Back 5

gametophyte

Front 6

diploid form of "alternation of generation" cycle that produces spores

Back 6

sporophyte

Front 7

In what ways are algae important to all living things on Earth?

Back 7

They produce much of the oxygen and nutrients used on Earth.

Front 8

Give examples that show why the green algae are considered to be the most diverse of the 6 phyla of algae.

Back 8

1)They have more than 7000 species
2)They live in many locations such as freshwater, oceans, moist soil, treetrunks, snow, and on the fur of sloths
3) Can be unicellular, colonial, or multicellular
4) Can reproduces sexually or asexually

Front 9

In what ways do sporophyte and gametophyte generations of an alga such as an Ulva differ from each other?

Back 9

Gametophytes produces gametes and are haploid.
Sporophytes are diploids which undergo meiosis and form spores which grow into haploid gametophytes

Front 10

Why are phycobilins an important pigment in red algae?

Back 10

They absorb green, violet, and blue light which is the only part of the light spectrum which penetrates water belown 100 meters. It allows them to survive in deep water.

Front 11

Why should euglenoids be classified as protozoans as well as algae?

Back 11

Protozoan- animal like because they ingest food if there is no light and have flagella
Algae- plantlike protists, live in water, photosynthesize