00:01
In the question, the various scenarios are been given about the different relationship seen in the environment like parasitism, mutualism, commensalism, competition and using this basis of scenario, we have to see which is the relationship seen.
00:22
The first scenario is given about the cigaro cactus which is growing in an arizona desert.
00:28
This is getting pollinated by a mexican long -tongued bat so this bat will suck the nectar it will leak the nectar from the white flower growing on this cactus and inter it will spread and pollinate so this is a give -and -take relationship which is known as mutualism so first one is mutualism relationship second is a orchid which is growing on trees so generally we orchids are known as epiphytes that is tree growing on another tree.
01:04
So it grows for access of sunlight and absorbing the nutrients and the moisture from the air, which is it is not taking from the host.
01:14
That means host is not harmed.
01:17
So a relationship where there is a plus zero interaction, meaning one is being benefited, either is not harmed nor benefited.
01:26
It is called as commensalism.
01:31
The earlier mutual is the more than plus -plus interaction.
01:34
Both are being benefited mutually...