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11.Organisms and Populations
easy
Name the association in which one species produces poisonous substance or a change in environmental conditions that is harmful to another species.
Option A
Option B
Option C
Option D
Solution
Amensalism. It is also called as anti-biosis. E.g. Penicillium notatum (Blue mold) kills the bacteria by secreting penicillin an antibiotic.
The adversely affected species is called amensal while the affecting species is called as inhibitor.
The bacteria are harmed while the fungi (blue mold) is unaffected.
$\Rightarrow$ The blue mold can survive in presence or absence of bacteria.
Standard 12
Biology
Similar Questions
Match the columns :
| Column – $I$ | Column – $II$ |
| (a) Mutualism | $(i)$ $\quad$ Diapause |
| (b) Commensalism | $(ii)$ Hibernation |
| (c) Parasitism | $(iii)$ Dormancy |
| (d) Predation | $(iv)$ Aestivation |
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