Kingdom Protista (Algae) LAB Packet

Blades

Leaf-like structures for where photosynthesis occurs in multicellular algae

Conjugation

A form of sexual reproduction which occurs in some protistans

Algae

Autotrophic protistans

Plankton

floating microscopic aquatic life

Holdfast

root-like structure for anchorage in some multicellular algae

Air bladders

structures that provide buoyancy in some brown algae

Diatoms

unicellular algae with silica shells

Zygospores

product of conjugation in certain green algae

Flagella

tail-like structures for motility

Daughter colonies

colonies that result from asexual reproduction in some algae

Algae

Autotrophic members of Kingdom protista

Chloroplasts

cell organelles where photosynthesis occurs

Diatomaceous earth

large deposits of diatom shells

Stipe

stem-like structure in multicellular algae that supports blades

Are algae eukaryotic or prokaryotic?

eukaryotic

How many flagella do dinoflagellates have?

two, which allow them to spin

What kind of algae glows?

dinoflagellates which cause red tides

Diatoms contains valves which do…

provide structural support and protection.

Diatoms make ____

oil

Euglena is a ____ flagellate

unicellular

What is phagocytosis?

Phagocytosis is the process by which certain cells engulf and digest large particles, such as bacteria or dead cell debris, by enclosing them in a membrane-bound vesicle.

Pellicle

A flexible, proteinaceous outer covering that provides shape and support to certain protists like Euglena.

What is an eyespot in an euglena?

An eyespot in a Euglena is a light-sensitive organelle that helps the organism detect light direction, enabling it to move towards favorable light conditions for photosynthesis.

Phototaxis

The movement of organisms toward or away from light.

Volvox

colonial green algae found in many calm fresh water bodies

What shape are volvox?

Volvox are spherical or globular in shape, forming a hollow ball made up of numerous cells.

how do volvox reproduce?

Volvox reproduce both sexually and asexually, forming daughter colonies within the parent colony or through the release of gametes.

Spirogyra

a filamentous green algae characterized by spiral chloroplasts.

Where is spirogyra commonly found?

freshwater enviroments

Protococcus

common unicellular green algae, often seen growing on fences, bricks, and siding.

Ulva is also known as

sea lettuce

Ulva

multicellular green algae that inhabits salt and brackish water in coastal areas

Ulvas have ____ to anchor them to rocks or other solid substrates

holdfasts

Photosynthesis occurs in the _____ or ulvas

blades

Laminaria and Sargasum

multicelluar brown algae that inhabit marine envrionments

Brown algae uses _____ to harness sunlight for photosynthesis

fucoxanthin

Sargassum have ____ which provide buoyancy to the stipes and blades, allowing them to float to the surface for better sunlight exposure.

air baldders

Red algae

multicellular algae that inhabit deeper, calmer waters.

Red algae uses pigment _____ to harness the limited sunlight found at greater depths.

phycoerytherin

Unicellular golden algae with valves

diatoms

Ancestral to plants

green alge

unicellular flagellates with chloroplasts

euglenoids

Silica shells are used in pool filters

diatoms

unicellular green algae

protococcus