The concentration of a toxicant that kills 50% of the exposed organism is called_________________?

Related Mcqs:

1. A dose of a toxicant that kills 50% of the exposed organism is called_________________?

   A. LC₅₀
   B. LD₅₀
   C. None of the Above
   D. LD₇₅

2. It is an organism which lives on or within another living organism is called_________________?

   B. Parasite
   C. Predator
   D. Parasitoid
   E. Scavengers

3. Pesticide group which goes into the system of host and kills pest without harming host is called_________________?

   A. Systemic
   B. Contact
   C. Selective
   D. Protect ant

4. Toxicant refers to a________________?

   A. Poison
   B. Poisonous material
   C. None of the Above
   D. Both of them

5. Any organism which harms or causes damage to man directly or indirectly is called ?

   A. Inset pest
   B. Pest
   C. Agricultural Insect
   D. None of the above

6. A free living animal that attack and feed on other organism is called_______________?

   A. Predator
   B. Parasite
   C. Scavenger
   D. Parasite

7. Any organism which harm or causes damage man directly or indirectly called as________________?

   A. Insect
   B. Insect pest
   C. Pest
   D. none of the above

8. Use of living organism to bring down the pest population to sub economic level is called____________________?

   A. Biological control
   B. Cultural control
   C. Physical control
   D. Natural control

9. The living organism that live in or on the bodies of other living organisms from which they get their food, during at least one stage of their existence is called________________?

   A. Predator
   B. Parasites
   C. Prey
   D. Parasitism

10. All the practices used to control the pest population with in certain limit are called_________________?

    A. Chemical control
    B. Natural control
    C. Artificial control
    D. Impossible to control

    Submitted by: Shafiq Rehman