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Symbiosis

7 PYQ across 3 exams · 1990–2025 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

CSE 1990 → CISF 2024 → GEO 2025
19901 PYQ
CSEQ3
Mycorrhiza is a symbiotic association between…
20131 PYQ
CSEQ97
Mycorrhizal biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to 1. resist drought and incr…
20141 PYQ
CSEQ22
Lichens, which are capable of initiating ecological succession even on a bare rock, are actually a symbiotic association of…
20211 PYQ
CSEQ30
Which of the following have species that can establish symbiotic relationship with other organisms? 1. Cnidarians 2. Fungi 3. Protozoa Selec…
20221 PYQ
CSEQ90
Certain species of which one of the following organisms are well known as cultivators of fungi?…
20241 PYQ
CISFQ7
Lichens represent the symbiotic relationships between algae and fungi. The algae component present in lichen is best known as…
20251 PYQ
GEOQ36
Which of the following associations is/are example/examples of mutualism? 1. Mycorrhizae : Fungi and roots of higher plants 2. Lichens : Fun…
Related concepts — explore their timelines too
MutualismEcological succession
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