Agricultural Entomology - Study Mode
[#246] Use of resistant varieties in the IPM of insect is an example of
Correct Answer
(B) Cultural control
Explanation
Solution: The use of resistant varieties in the IPM of insects is an example of Cultural control. Cultural control methods involve the use of agronomic practices to reduce insect pest abundance and damage below that which would have occurred if the practice had not been used. In IPM, plant resistance to insects refers to the use of resistant crop varieties to suppress insect pest damage.
[#247] Dichotomously branched and maculated wing is present in which insect order?
Correct Answer
(A) Mecoptera
Explanation
Solution: Dichotomously branched and maculated wing is present in Mecoptera insect order. Mecoptera (from the Greek: mecos = "long", ptera = "wings") is an order of insects in the superorder Endopterygota with about six hundred species. They are somewhat fly-like in appearance, being small to medium-sized insects with long slender bodies and narrow membranous wings. Mecoptera is small to medium-sized insects with long beaklike rostra, membranous wings and slender, elongated bodies. The fore and hind wings are similar in shape, long and narrow, with numerous cross-veins.
[#248] The reduviid bug Sycanus collaris is a predatory of
Correct Answer
(D) Termites
Explanation
Solution: The reduviid bug Sycanus collaris is predatory of Termites. They have an elongated head with a distinct narrowed 'neck', long legs, and prominent, segmented, tubular mouthparts, most commonly called the proboscis, but some authors use the term "rostrum". Most species are bright in colour with hues of brown, black, red, or orange. Predatory Reduviidae use the long rostrum to inject lethal saliva that liquefies the insides of the prey, which are then sucked out. The saliva contains enzymes that digest the tissues they swallow.
[#249] Which is called as the brain of the nematode?
Correct Answer
(C) Nerve ring
Explanation
Solution: Nerve ring is called the brain of the nematode. The nerve ring receives sensory input from the anterior tip of the animal using six nerve bundles, all nerve fibers of which have centrally located cell bodies. The central nervous system consists primarily of a so-called circumoral brain or nerve ring, consisting of annular neuropil that encircles the neck of the pharyngeal muscle.
[#250] The Indian board of wild life was constituted in
Correct Answer
(C) 1952
Explanation
Solution: The Indian board of wildlife was constituted in 1952. The Government of India in 1952 constituted an advisory body designated as the Indian Board for Wildlife (IBWL). The Indian Board for Wildlife was chaired by the Prime Minister. The Wildlife (Protection) Act 1972 was enacted for providing special legal protection to wildlife.