Answer:

What are the interactions that exist among organisms in the tropical rainforests?

Unlike temperate forests where many plants are wind-pollinated, most tropical rain forest plants rely upon animals for pollination. Insects, birds and mammals pollinate the plants inadvertently by transferring pollen from flower to flower in their quest for food (nectar and/or pollen).

Discuss the relationship or interaction between an orchid and a tree in a tropical rainforest ecosystem

While the relationship between orchids and trees is a form of symbiosis, it is not mutualism, where both parties benefit. Instead it is what is known as commensalism, when one party benefits and the other is unaffected.

What will happen if producers will decrease in a rainforest's ecosystem?

They would starve and die unless they could move to another habitat. All the other animals in the food web would die too, because their food supplies would have gone. The populations of the consumers would fall as the population of the producer fell.

Are these interactions important in the ecosystem? Why?

Reason on why interaction is important is because it controls the population of living organisms. A predator is a living organism that hunts other living organisms for food and a prey is a living organism that is hunted by predators.

Individual organisms live together in an ecosystem and depend on one another. In fact, they have many different types of interactions with each other, and many of these interactions are critical for their survival. ... One category of interactions describes the different ways organisms obtain their food and energy.