Trace holozoic nutrition through ingestion, digestion, absorption and assimilation of food.
Tę umiejętność sprawdza 6 zadań wzorowanych na arkuszach IB z lat 2022–2025.
Which description correctly characterizes holozoic nutrition? A. Autotrophic, with external digestion B. Heterotrophic, with internal digestion C. Saprotrophic, with only extracellular digestion outside the body D. Photoautotrophic, without ingestion
A unicellular ciliate is observed enclosing smaller living cells in food vacuoles and digesting them. What does this observation demonstrate? A. No single cell can digest food B. The ciliate obtains nutrition heterotrophically C. The ciliate must lack…
(i) State, with a reason, whether this animal is autotrophic or heterotrophic. (ii) Explain what information is needed to determine its trophic level.
The schematic represents an absorptive cell in the intestinal lining. Describe how the structures marked X support this cell’s function.
A freshwater invertebrate ingests fragments of dead leaves and digests them inside its gut. Which nutritional description is most specific? A. A photoautotroph using light to fix carbon B. A saprotroph secreting enzymes onto food outside its body C. A…
How does feeding by a woodlouse on leaf litter differ from saprotrophic feeding by a fungus? A. The woodlouse ingests material before digestion; the fungus digests externally before absorbing products B. Both must fix atmospheric carbon using light C. The…
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