Name the association in which one species produces poisonous substance or a  change in environmental conditions that is harmful to another species.

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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.

Similar Questions

A sedentary sea anemone gets attached to the shell lining of hermit crab. The association is

  • [NEET 2013]

$A$ : The interaction between sea anemone and clown fish is commensalism.
$R$ : The fish gets protection from predators but anemone does not appear to derive any benefit.

An orchid plant is growing on the branch of mango tree. How do you describe this interaction between the orchid and the mango tree?

Match List $I$ with List $II$.

List $I$ (Interacting species) List $II$ (Name of interaction)
$A$. A Leopard and a Lion in a forest/grassland $I$. Competition
$B$. A Cuckoo laying egg in a Crow's nest $II$. Brood parasitism
$C$. Fungi and root of a higher plant in Mycorrhizae $III$. Mutualism
$D$. A cattle egret and a Cattle in a field $IV$. Commensalism

Choose the correct answer from the options given below.

  • [NEET 2023]

Match List $I$ with List $II$ :

List $I$ (Interaction) List $II$ (Species $A$ and $B$)
$A$. Mutualism $I$. $+(A), 0(B)$
$B$. Commensalism $II$. $-(A), 0(B)$
$C$. Amensalism $III$. $+(A),-(B)$
$D$. Parasitism $IV$. $+(A),+(B)$

Choose the correct answer from the options given below:

  • [NEET 2023]