Pedro listed characteristics of two types of protists in a chart.
Two Groups of Protists
X Y
Often multicellular
Are usually autotrophic
Include euglenoids
Are heterotrophs
Reproduce using spores
Include different molds
Which headings best complete the chart?
X: Plant-Like Protists
Y: Animal-Like Protists
X: Animal-Like Protists
Y: Plant-Like Protists
X: Fungus-Like Protists
Y: Plant-Like Protists
X: Plant-Like Protists
Y: Fungus-Like Protists
Answers
Answer:
Animals like protists are called protozoa
plant like protist are called algae
fungus like protist are called amoeba, molds
Explanation:
Protozoa generally feed by engulfing and digesting other organisms. As consumers, they have various roles in food chains and webs. Some are predators. . In fact, protozoa predators keep many bacterial populations in check. Other protozoa are herbivores. They graze on algae.
classification is based only on differences in movement. It does not represent phylogenetic relationships.
Algae play significant roles as producers in aquatic ecosystems. Microscopic forms live suspended in the water column. They are the main component of phytoplankton. As such, they contribute to the food base of most marine ecosystems.
Types of algae include red and green algae, euglenids, and dinoflagellates (see Table below for examples). Scientists think that red and green algae evolved from endosymbiotic relationships with cyanobacteria. Their chloroplasts have two membranes because the cell membranes of the cyanobacteria became additional plasma membranes of the chloroplasts.
Life Cycles of Algae: Zygotic Meiosis (A), Gametic Meiosis (B) and Sporic Meiosis (C). In life cycle A (left), diploid (2n) zygotes result from fertilization and then undergo meiosis to produce haploid (n) gametes
Asexual reproduction is fast, but it doesn’t create new genetic variation. Sexual reproduction is more complicated and risky, but it creates new gene combinations. Each strategy may work better under different conditions. Rapid population growth is adaptive when conditions are favorable. Genetic variation helps ensure that some organisms will survive if the environment changes.
Life Cycles of Algae: Zygotic Meiosis (A), Gametic Meiosis (B) and Sporic Meiosis (C). In life cycle A (left), diploid (2n) zygotes result from fertilization and then undergo meiosis to produce haploid (n) gametes. The gametes undergo mitosis and produce many additional copies of themselves. How are life cycles B and C different from life cycle A?
KQED: Algae Power
QUEST explores the potential of algae-–once considered nothing more than pond scum–-to become the fuel of the future. Entrepreneurs from throughout California are working to create the next generation of biofuels from algae. But will you ever be able to run your car off it?
Life Cycles of Algae: Zygotic Meiosis (A), Gametic Meiosis (B) and Sporic Meiosis (C). In life cycle A (left), diploid (2n) zygotes result from fertilization and then undergo meiosis to produce haploid (n) gametes.
Fungus-Like Protists: Molds
Fungus-like protists are molds. They are absorptive feeders on decaying organic matter. They resemble fungi, and they reproduce with spores as fungi do. However, in other ways, they are quite different from fungi and more like other protists. For example, they have cell walls made of cellulose, whereas fungi have cell walls made of chitin. Like other protists, they have complicated life cycles with both asexual and sexual reproduction. They are motile cells during some stages of their life cycle. Two major types of fungus-like protists are slime molds and water molds.
Slime Molds
Slime molds are fungus-like protists commonly found on rotting logs and compost. They move very slowly in search of decaying matter to eat.
There are two types of slime molds when it comes to how they swarm: acellular and cellular.
Water Molds
Water molds are commonly found in moist soil and surface water. Many are plant pathogens that destroy crops. They infect plants such as grapes, lettuce, corn, and potatoes. Some water molds are parasites of fish and other aquatic organisms.
Lesson Summary
Animal-like protists are called protozoa. Most consist of a single cell. Like animals, they are heterotrophic and capable of moving. Examples of protozoa include amoebas and paramecia.
Plant-like protists are called algae. They include single-celled diatoms and . Like plants, they contain chlorophyll .
Fungus-like protists are molds. They are absorptive feeders, found on decaying organic matter. They resemble fungi and reproduce with spores as fungi do.
X plant like protist
Y animal like protist
reproduce using spores
Answer:
b
Explanation:
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