Across
- 2. – Submicroscopic, sub cellular particles that require a host cell in which to multiply.
- 3. Chemicals used to kill plants. They are used in contact with the seed, stem, or leaf of a plant.
- 5. – Any animal out of place.
- 6. Invasion of the tissues of the body of a host by disease-producing organisms in such a way that injury results; the presence of multiplying parasites, bacteria, viruses, etc., within the body of a host.
- 13. – Any invertebrate of the phylum Mollusca, having a calcareous shell of one or more pieces that wholly or partially enclose the soft, un-segmented body. Includes snails and slugs.
- 14. To destroy or abolish, as a disease, insect, or weed pest.
- 16. The use of production practices typically used to improve plant growth and yield by controlling pests.
- 17. Pest Management (IPM) – An ecological approach to pest management in which all available necessary techniques are systematically consolidated into a unified program, so that pest populations can
- 19. An air-breathing animal that has a distinct head, thorax, and abdomen. Insects have one pair of antennae on the head, three pairs of legs, and usually two pairs of wings on the thorax. The opening of the reproductive organs is near the posterior end of the body. They may be harmful or useful depending upon their habits.
- 20. – Microscopic, wormlike, transparent organisms that can attack plant roots or stems to cause stunted or unhealthy growth.
- 21. – The immature insect hatching from the egg and up to the pupal stage in orders with complex metamorphosis.
- 22. – Anything, such as an insect, animal, or plant that causes injury, loss, or irritation to a crop.
Down
- 1. – A process by which an organism changes in form and structure in the course of its development, as many insects do.
- 4. Single-celled microorganism; some cause human, animal, or plant diseases; others are beneficial.
- 7. The application of herbicides or pesticides for the control of weeds and insects in crops.
- 8. – The stage between the larva and the adult in insects with complete metamorphosis, a non-feeding and usually inactive stage.
- 9. – A classification of mammals, mostly vegetarians, characterized by their single pair of chisel shaped, upper incisors.
- 10. Plantlike organisms that have no chlorophyll; they get their nourishment from living or decay inorganic matter.
- 11. – A substance used to control insect, plant, or animal pests. Pesticides include insecticides, herbicides, fungicides, nematocides, and rodenticides.
- 12. A method of pest control by the use of predatory insects, fungi, or viruses; as contrasted to control by chemical pesticides.
- 15. – A plant out of place. A plant whose usefulness is not recognized or which is undesirable because of odor, spines, prickles, or poisonous characteristics.
- 18. Any deviation from normal state of health in plants, animals, or people which temporarily impairs vital functions. It may be caused by viruses, pathogenic bacteria, parasites, poor nutrition, congenital or inherent deficiencies, unfavorable environment, or any combination of these.
- 20. – A stage in the development of some insects and related forms, immediately preceding the adult stage.