ABEKA BIOLOGY COMPREHENSIVE EXAM 2025/2026
QUESTIONS WITH ANSWERS GRADED A+
✔✔Chlorella - ✔✔One of the most important green algae because it has been widely
used in the study of photosynthesis.
✔✔Chlamydomonas - ✔✔A unicellular green alga that lives in both soil and water.
✔✔Protococcus - ✔✔Unicellular green algae that often grows on the trunks of trees and
on unpainted buildings or fenceposts.
✔✔Desmids - ✔✔A large group of freshwater green algae.
✔✔Volvox - ✔✔A unicellular algae that lives in colonies of hundreds or thousands of
individual cells.
✔✔Holdfasts - ✔✔A special type of anchoring cell which is found in retain types of
algae.
✔✔Spirogyra - ✔✔The cells of these filamentous algae contain one or more ribbonlike
chloroplasts arranged in a spiral.
✔✔Yellow Algae - ✔✔A group of algae that contains diatoms and
often causes plants to appear yellow-green or golden-brown.
✔✔Diatoms - ✔✔The most numerous and most interesting of the yellow algae that is
the most abundant life form on earth except for bacteria.
✔✔Brown Algae - ✔✔A group of algae that is mostly all marine organisms that have a
golden-brown pigment.
✔✔Seaweeds - ✔✔A brown algae that is found in colder ocean waters.
✔✔Kelps - ✔✔The largest of the brown algae that grows in both Atlantic and Pacific
oceans.
✔✔Algin - ✔✔A gummy substance derived from key that can hold several different
liquids together in an emulsion.
✔✔Rockweeds - ✔✔A type of brown algae that is attached to rocks along the seashore
by holdfasts.
✔✔Gulfweeds - ✔✔A type of brown algae that have a main stem with flattened, leaflike
outgrowths and branches that contain the air sacs.
, ✔✔Red Algae - ✔✔A type of algae that lives in salt water and some species in fresh
water that varies from pink and red to purple and black.
✔✔Carrageenan - ✔✔A gelatinous substance used in many food products.
✔✔Dinoflagellates - ✔✔A group of algae that are microscopic, one-celled, aquatic
organisms found in both fresh water and salt water.
✔✔Blue-green Algae - ✔✔A group of algae that commonly clump together to form
colonies resembling those of unicellular algae; prokaryotes that are classified with
bacteria.
✔✔Cyanobacteria - ✔✔Blue-green algae is classified into this because of their bluish
appearance.
✔✔Anabaena - ✔✔A genus of nitrogen-fixing cyanobacteria whose cells look like tiny
beads or barrels.
✔✔Fungi - ✔✔Nonvascular plantlike organisms that lack chlorophyll and depend upon
other organisms for food.
✔✔Hyphae - ✔✔The threadlike structures, or filaments, that form the body of a fungus.
✔✔Mycelium - ✔✔The mass of hyphae forming the main body of a fungus.
✔✔Mycologists - ✔✔Scientists who study fungi.
✔✔Saprophytes - ✔✔Fungi who obtain their nutrition from dead organisms.
✔✔Club Fungi - ✔✔Fungi that produce spores in microscopic club-shaped structures.
✔✔Mushrooms - ✔✔Consist of a mass of subterranean hyphae that spread through the
soil but come together to form a main, compact mass, or mycelium, just under the
surface.
✔✔Shelf Fungi - ✔✔Found growing on trees or rotting logs; their mycelia spreads
throughout the log, digesting the wood and causing decay.
✔✔Parasite - ✔✔An organism that lives on or in another living organism and derives its
nutrition from that organism.
✔✔Rusts - ✔✔Parasitic club fungi that do millions of dollars in damage to crops each
year; get their name from the rusty-colored spores they leave on their hosts.
QUESTIONS WITH ANSWERS GRADED A+
✔✔Chlorella - ✔✔One of the most important green algae because it has been widely
used in the study of photosynthesis.
✔✔Chlamydomonas - ✔✔A unicellular green alga that lives in both soil and water.
✔✔Protococcus - ✔✔Unicellular green algae that often grows on the trunks of trees and
on unpainted buildings or fenceposts.
✔✔Desmids - ✔✔A large group of freshwater green algae.
✔✔Volvox - ✔✔A unicellular algae that lives in colonies of hundreds or thousands of
individual cells.
✔✔Holdfasts - ✔✔A special type of anchoring cell which is found in retain types of
algae.
✔✔Spirogyra - ✔✔The cells of these filamentous algae contain one or more ribbonlike
chloroplasts arranged in a spiral.
✔✔Yellow Algae - ✔✔A group of algae that contains diatoms and
often causes plants to appear yellow-green or golden-brown.
✔✔Diatoms - ✔✔The most numerous and most interesting of the yellow algae that is
the most abundant life form on earth except for bacteria.
✔✔Brown Algae - ✔✔A group of algae that is mostly all marine organisms that have a
golden-brown pigment.
✔✔Seaweeds - ✔✔A brown algae that is found in colder ocean waters.
✔✔Kelps - ✔✔The largest of the brown algae that grows in both Atlantic and Pacific
oceans.
✔✔Algin - ✔✔A gummy substance derived from key that can hold several different
liquids together in an emulsion.
✔✔Rockweeds - ✔✔A type of brown algae that is attached to rocks along the seashore
by holdfasts.
✔✔Gulfweeds - ✔✔A type of brown algae that have a main stem with flattened, leaflike
outgrowths and branches that contain the air sacs.
, ✔✔Red Algae - ✔✔A type of algae that lives in salt water and some species in fresh
water that varies from pink and red to purple and black.
✔✔Carrageenan - ✔✔A gelatinous substance used in many food products.
✔✔Dinoflagellates - ✔✔A group of algae that are microscopic, one-celled, aquatic
organisms found in both fresh water and salt water.
✔✔Blue-green Algae - ✔✔A group of algae that commonly clump together to form
colonies resembling those of unicellular algae; prokaryotes that are classified with
bacteria.
✔✔Cyanobacteria - ✔✔Blue-green algae is classified into this because of their bluish
appearance.
✔✔Anabaena - ✔✔A genus of nitrogen-fixing cyanobacteria whose cells look like tiny
beads or barrels.
✔✔Fungi - ✔✔Nonvascular plantlike organisms that lack chlorophyll and depend upon
other organisms for food.
✔✔Hyphae - ✔✔The threadlike structures, or filaments, that form the body of a fungus.
✔✔Mycelium - ✔✔The mass of hyphae forming the main body of a fungus.
✔✔Mycologists - ✔✔Scientists who study fungi.
✔✔Saprophytes - ✔✔Fungi who obtain their nutrition from dead organisms.
✔✔Club Fungi - ✔✔Fungi that produce spores in microscopic club-shaped structures.
✔✔Mushrooms - ✔✔Consist of a mass of subterranean hyphae that spread through the
soil but come together to form a main, compact mass, or mycelium, just under the
surface.
✔✔Shelf Fungi - ✔✔Found growing on trees or rotting logs; their mycelia spreads
throughout the log, digesting the wood and causing decay.
✔✔Parasite - ✔✔An organism that lives on or in another living organism and derives its
nutrition from that organism.
✔✔Rusts - ✔✔Parasitic club fungi that do millions of dollars in damage to crops each
year; get their name from the rusty-colored spores they leave on their hosts.
