Agricultural Entomology - Study Mode
[#211] Pterostigma is a character of the order
Correct Answer
(C) Odonata
Explanation
Solution: Pterostigma is a character of the order Odonata. The pterostigma is a group of specialized cells in the outer wings of insects, which are often thickened or coloured, and thus stand out from other cells. The pterostigma, a heavier section of the wing than nearby sections, assists in gliding. Without the pterostigmata, self-exciting vibrations known as flutter would set in on the wing above a certain critical speed, making gliding impossible.
[#212] Chewing and cutting type of mouth parts are found in
Correct Answer
(D) Army worm
Explanation
Solution: Chewing and cutting types of mouth parts are found in Army worms. The fall armyworm is a species in the order Lepidoptera and one of the species of the fall armyworm moths distinguished by their larval life stage. It is regarded as a pest and can damage and destroy a wide variety of crops, which causes large economic damage. This is the most destructive life stage as the larvae have biting mouthparts.
[#213] Quarantine law was initiated in
Correct Answer
(C) 1912
Explanation
Solution: Quarantine law was initiated in 1912. The Plant Quarantine Act, originally enacted in 1912, gave the Animal and Plant Health Inspection Service (APHIS) authority to regulate the importation and interstate movement of nursery stock and other plants that may carry pests and diseases that are harmful to agriculture. This authority is particularly important to the agency’s ability to prevent or limit the spread of harmful invasive species within or to a state or region of the United States.
[#214] A substance released by a non-living material which is favourable to a receiving organism but detrimental to an organism of another species that is found in or on the non-living material is known as
Correct Answer
(A) Aneumone
Explanation
Solution: A substance released by a non-living material that is favourable to a receiving organism but detrimental to an organism of another species that is found in or on the non-living material is known as Aneumone.
[#215] Completely parasitic order is
Correct Answer
(B) Strepsiptera
Explanation
Solution: The completely parasitic order is Strepsiptera. The Strepsiptera are an order of insects with eleven extant families that include about 600 described species. They are endoparasites in other insects, such as bees, wasps, leafhoppers, silverfish, and cockroaches. Females of most species never emerge from the host after entering its body, finally dying inside it.