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Q&A Autotrophic protists
Heterotrophic protists
If I am wrong correct
me
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They are projections of the cytoplasm used for feeding and movement.
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• What are pseudopods? How do protists use them?
Complete the chart
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Label the paramecium
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Draw 3 protists that move in 3 different ways.
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Which diagram looks like the movement of cilia and which looks
like the movement of flagellum
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Like flagellum Euglena
Like cilia (Paramecium)
How do amoeba reproduce?
• Asexually by mitosis
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What is conjugation?
A process that allows protists to exchange genetic materials with
other individual
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Within a large population how does conjugation benefits protists?
• By creating and maintaining genetic variation or diversity.
What occurs in the process of alternation of
generation?It is a means of sexual reproduction
in which the life cycle switches between haploid and diploid stages,
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Conjugation begins when 2 paramecia attach to each other
Meiosis produces 4 haploid micronuclei
In each cell, 3 of the micronuclei disintegrate
The remaining micronucleus in each cell divides by mitosis
The 2 cells exchange one haploid micronucleus
In each cell the micronuclei fuse to form a single diploid micronucleus and the macronucleus disintegrates
Each cell forms a new macronucleus from its micronucleus
How do autotrophic protists make the
diversity possible ?
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• They are the base of food chain
What are phytoplankton?
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• Small photosynthetic organisms found near the surface of the ocean, many are autotrophic protists
How do protists help maintain equilibrium in
coral reef ecosystem
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• Red algae support coral reefs by providing much needed nutrients for coral animals, red algae also produces minerals corals need to form reefs
How can algal bloom be harmful?
• A bloom can quickly deplete the water of the nutrients, the decomposition of the dead algae can robe the water of its oxygen, choking resent fish and invertebrates life.
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What is the function of food vacuole?
• It temporary stores food until it can be digested
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What are cilia? How are they used by protists?
They are short hair like projections used for movement
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What are slime molds?
• They are heterotrophic protists that thrive on decaying organic matter
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By what process are haploid spores made by a water mold?
Where does the process occures?
• Spores are made by meiosis inside the sporangium.
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What structure does the plasmodium eventually develop into? And what is the function of
that structure?
–Develops into sporangia which produce haploid cells
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Who am I? I am a locomotion organ found in some protists (I also help in feeding) yet
they call me a liar
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Pseudopodia
In amoeba indigestible materials are kept in contractile vacuole
• Food
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A gullet is an organ used by paramecium for reproduction
• Feeding
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In a slime mold’s life cycle germinating spores release amoeba like cells
• True
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Water mold grow on dead or decaying plants and animals
• True
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Some protists have about three or four thousands of flagella
• One or two
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How does the protist Trichonympha make it
possible for termites to eat wood?
By manufacturing the enzyme cellulase which breaks the chemical bonds of cellulose.
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What causes malaria?
• Plasmodium
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How do amoebas capture and ingest food?
• They use their pseudopods to surround the food particle or
cell and take it inside themselves ingesting it.
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If 2 organisms are making benit of each other this
symbiotic relation is called what? Mention an example
Mutualism – The example is termites and trichnympha
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If an organism is making benefit while hearting another one this relation is called what
– mention an example
•Parasitism, malaria
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