Flamingos and fish compete in a lake for .......... .

The orchid $Ophrys$ employs 'sexual deceit' to get pollinated by a species of bee. One petal of its flower bears an uncanny resemblance to the female of the bee in size,colour,and markings. The male bee perceives it as the female and attempts to copulate with the flower. During this process,pollen grains are dusted on the male bee's body. What is this phenomenon called?

Which of the following is $NOT$ a characteristic of a parasite's effect on its host?

Give one example for each of the following types:
$(a)$ Migratory animal
$(b)$ Camouflaged animal
$(c)$ Predator animal
$(d)$ Biological control agent
$(e)$ Phytophagous animal
$(f)$ Chemical defense agent

Which of the following is an example of competitive interaction?

If the '$+$' sign is used for a beneficial interaction,the '$-$' sign for a detrimental interaction,and the '$0$' sign for a neutral interaction,then which population interaction is represented by '$+$' and '$-$'?