In this article we will discuss about:- 1. Meaning of Parasites 2. Diversity of Parasites 3. Classification 4. Modes of Transmission 5. Host Specificity 6. Ecology 7. Responses to Host's Immune Mechanism. Meaning of Parasites: Parasites are organisms that live and feed on another organism, usually, without killing it. The organism on which the parasite lives is called the host. [...]
The following points highlight the five tests conducted for determining the effect of toxicity on organisms. The tests are: 1. Full Life Cycle Tests 2. Partial Life Cycle Toxicity Tests 3. Most Sensitive Early Life Stage Toxicity Tests 4. Functional Tests 5. Bioassay in Toxicity Testing. Test # 1. Full Life Cycle Tests: These are typical chronic toxicity tests conducted [...]
The following points highlight the five major effects of allelochemicals on various organisms. The effects are: 1. Repellents 2. Escape from Predators 3. Suppressant 4. Attracants 5. Avoidance. Effect of Allelochemical # 1. Repellents: Repellents are distasteful and poisonous compounds present in buttercup leaves or mustards or the noxious butyl mercaptan (butanethiol) sprayed by the skunk. The bombardier beetle sprays [...]