Agricultural Entomology - Study Mode
[#491] A strong cephalic framework is the characteristic of this family
Correct Answer
(A) Hoplolaimidae
Explanation
Solution: A strong cephalic framework is the characteristic of the Hoplolaimidae family. Hoplolaimidae is a family of plant pathogenic nematodes. It has two subfamilies, Hoplolaiminae and Rotylenchulinae. Typically hoplolaimids are ecto or semi endoparasites of higher plants. Members of this family are described as being a relatively large nematodes with a large heavily defined cephalic framework, including a large stylet with tulip shaped knobs. The nematode has a cuticle with 4 - 6 layers.
[#492] White grub beetles lay eggs
Correct Answer
(B) Singly in loose soil up to the depth of 10 cm
Explanation
Solution: White grub beetles lay eggs singly in loose soil up to the depth of 10 cm. May or June beetles seem to prefer grass sod as egg laying sites. The eggs hatch in a few weeks and the larvae feed on the roots of nearby host plants just a few inches below the soil line. As winter approaches and soil temperatures drop, the true white grubs burrow deep into the ground below the frost line.
[#493] In storage, grains can be mix with
Correct Answer
(C) Malathion WP
Explanation
Solution: In storage, grains can be mixed with Malathion WP. Malathion is a man-made organophosphate insecticide that is commonly used to control mosquitoes and a variety of insects that attack fruits, vegetables, landscaping plants and shrubs. It can also be found in other pesticide products used indoors and on pets to control ticks and insects, such as fleas and ants.
[#494] Anamorphosis is encountered the following insect order
Correct Answer
(A) Protura
Explanation
Solution: Anamorphosis is encountered in the Protura insect order. Anamorphosis refers to postembryonic development and moulting in Arthropoda that results in the addition of abdominal body segments, even after sexual maturity. Examples of this mode of development occur in proturans and millipedes. Protura hatch with only 8 abdominal segments and add the remaining 3 in subsequent moults. These new segments arise behind the last abdominal segment but in front of the telson.
[#495] To which group does the lac insect belongs?
Correct Answer
(C) Homoptera
Explanation
Solution: The lac insect belongs to group Homoptera. Homoptera is a suborder of order Hemiptera that is considered by some taxonomists to be paraphyletic. Lac is the resinous secretion of several species of lac insects, of which the most commonly cultivated is Kerria lacca. These are in the superfamily Coccoidea, the scale insects. This species is perhaps the most commercially important lac insect, being a main source of lac, a resin that can be refined into shellac and other products.