11 mark
Euglena is an autotroph.
Identify, from the diagram, the feature which indicates this is an autotrophic organism.
Nucleolus
Chloroplast
Contractile vacuole
Mitochondria
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Syllabus Edition
First teaching 2023
First exams 2025
|
Ecological Niches (HL IB Biology)
Exam Questions
9 mins3 questions
1
1 mark
1 markThe Ghost Orchid (Epipogium aphyllum) is a rare plant species which lacks leaves or chlorophyll. The plant has formed a symbiotic relationship with a fungus in order to obtain the nutrition it requires. The growth of the fungus is slowed as a result of the relationship.
Which of the following rows correctly describes E.aphyllum?
| Heterotroph | Autotroph | Parasite | Saprotroph | |
| A | ✓ | X | X | ✓ |
| B | X | ✓ | X | ✓ |
| C | ✓ | X | ✓ | ✓ |
| D | ✓ | X | ✓ | X |
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