Question

Two students, Unni and Kannan studied inter specific interactions between different species. They made a table assigning a ‘+’ for beneficial interaction, for detrimental and ‘0’ for neutral interaction. Can you help them by naming the interaction between species in different cases ? Write one example for each interaction.

Case number	Species A	Species B
1.	+	+
2.	-	-
3.	+	-
4.	+	0

Answer 1

1-Mutualism Eg; Lichen 

2-Competition Eg: Competition for food (Phytoplankton) between Flamingoes and Fishes

3 – Predation Eg: Lion and Deer 

4 – Commensalism

Eg: Epiphyte, Vanda and Mango tree