For example, plants can be threatened by an unexpected drop in temperature. Sometimes, however, the threats are unnatural, manmade, and controllable. Pesticides , for example, threaten the survival of insects that feed on plants. However, animals that also feed on the plants can be threatened by the pesticide too. Yet, the animals need to be able to eat the plants.
Nematodes are one possibility.
The nematode is a parasite that feeds on the insect without hurting the plant. An Introduction Beneficial Nematodes Nematodes as Biological Control Agents Survival is a daily challenge for all living things. Meanwhile, other concerns also must be addressed. Plants and animals reproduce at different stages of their life cycle and in different ways. Flowers, for example, have both male and female reproductive organs.