alga

Simple aquatic organism

An alga is a simple photosynthetic organism, typically aquatic, ranging from single-celled forms to large seaweeds.

Algae lack the roots, stems, and leaves of true plants.

They form the base of many aquatic food chains and produce much of Earth's oxygen.

The plural is algae, pronounced with a soft g: The pond was thick with algae.

seaweed

kelp

Large brown marine algae

  • noriDried edible seaweed sheets
  • wakameEdible brown algae
  • dulseEdible red seaweed

kombu · laver · bladderwrack · sargassum · rockweed · edible · umami · sushi · foraging · dashi

cultivation

biofuel

Fuel from organic sources

spirulina · chlorella · aquaculture · mariculture · fertilizer · supplement · bioplastic · cultivation · omega-3 · agar

aquatic

plankton

Drifting marine microlife

brackish · saltwater · estuary · lake · pond · stream · river · ocean · reef · benthos

biology

chlorophyll

Light-harvesting plant pigment

  • thallusUndifferentiated vegetative body
  • frondLarge, segmented plant blade
  • chloroplastsPhotosynthesis-performing cell structures

eukaryote · autotroph · spore · cellulose · photosynthesis · pigments · filament · colony · unicellular · multicellular

ecological

bloom

Flower or flourishing state

symbiosis · lichen · ecosystem

Categories
Opposites
biological classification

algamammal

Warm-blooded, milk-producing animal

heterotroph · animal · fungus · vertebrate · predator

plant-like vs. true plant

algaflowering plant

Seed-in-fruit producer

tree · angiosperm · fern · gymnosperm · conifer

aquatic ecosystem role

algaapex predator

Unpreyed-upon dominant hunter

shark · whale · fish · zooplankton · herbivore

Phrases
Family

algae, algal

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G