Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

Pouch like antennae is found in Horse fly.
Horse-flies or horseflies are true flies in the family Tabanidae in the insect order Diptera. They are often large and agile in flight, and only the female horseflies bite animals, including humans, to obtain blood.
The terminal segment of the antennae is pointed and annulated, appearing to be made up of several tapering rings. No hairs or arista are arising from the antennae.
In the Pangoniinae, ocelli are present and the antennal flagellum (whip-like structure) usually has eight annuli or rings.

Mealybug severely affects the crop of Mango.
Mango mealybug (Drosicha mangiferae), is a pest of mango crops in Asia. The nymphs and females suck plant sap from inflorescences, tender leaves, shoots and fruit peduncles.
There is a range of cultural, chemical and non-chemical techniques for minimizing damage to the mango crop, for example the use of physical barriers to stop Drosicha mangiferae nymphs from crawling up the stem of mango trees, by wrapping plastic sheets or sticky bands around the tree stem.

T shaped marking on marble sized mango fruits and at later stages feeding on cotyledons are characteristic symptoms of Sternochetus mangiferae.
Mango nut weevil grubs feed pulp, endocarp of marble sized fruits and cause 'T- shaped marking on the fruit surface and causes fruit drop.
Sternochetus mangiferae is a weevil commonly known as the mango seed weevil, mango stone weevil, or mango weevil. It is a compact weevil typical of the Cryptorhynchinae.
The adult female lays eggs on the surface of the mango fruit. Larvae and pupae develop inside the fruit and adults emerge, cutting their way out of the seed and pericarp after the fruit falls and decays.

Car blight disease of Italian millet is caused by Aphelenchoides besseyi.
Aphelenchoides besseyi is a plant pathogenic nematode. It is sometimes referred to as rice white tip, spring dwarf, strawberry bud, flying strawberry nematode or strawberry crimp disease nematode.
A. besseyi is an ectoparasitic nematode which means it feeds on the plant tissue externally. These nematodes can also cause stunting and sterility with yield losses of up to 50%.

Stem injection or root feeding of Monocrotophos is recommended for the management of Coconut black headed caterpillars.
Stem injection of 10 ml monocrotophos 36 EC for maidan areas (method as described under red palm weevil). As indicated earlier, before root feeding and stem injection of pesticide, harvest the nuts and a waiting period of 45 days must be observed for harvest.
Root feeding and stem injection (Monocrotophos) only once a year or maximum of twice. Don't use the coconut nuts up to 45 days after treatment. If any mature nuts are found on the tree, harvest the nuts before treatment.

The spiralling white fly infesting the leaves of many crops is Aleurodicus dispersus.
Spiralling whitefly is not fly, but a sap sucking bug. It gets its name from the characteristic egg spirals that the adult whitefly deposits on foliage and fruit.
The spiraling whitefly has been recorded on 38 genera of plants belonging to 27 plant families and more than 100 species.
It is a tropical pest of a range of horticultural crops, ornamental plants and shade trees. It is common to find this pest attacking many vegetable, ornamental, fruit and shade tree crops in Hawaii.

Virus is general type of Obligate parasite.
Viruses are small obligate intracellular parasites, which by definition contain either a RNA or DNA genome surrounded by a protective, virus-coded protein coat.
Viruses may be viewed as mobile genetic elements, most probably of cellular origin and characterized by a long co-evolution of virus and host.

Father of insect physiology is Wigglesworth.
Sir Vincent Brian Wigglesworth was a British entomologist who made significant contributions to the field of insect physiology.
Wigglesworth was able to distort the developmental phases of the insect by controlling levels of this hormone.
The bacterium Wigglesworthia glossinidia, which lives in the gut of the tsetse fly, is named for him.

Type of diapause found in Bombyx mori is Embryonic.
In Bombyx mori, embryonic diapause is induced transgenerationally as a maternal effect.
In the silkworm, Bombyx mori, diapause occurs at a specific embryonic stage, i.e. after formation of the germ band with cephalic lobes and telson and sequential mesoderm segmentation.
As long as the eggs are incubated at 25°C, cell divisions and morphological development of the embryos cease.

Among the given options Carbaryl is not a bio-pesticide.
Carbaryl is a man-made chemical pesticide that is toxic to insects. It is commonly used to control aphids, fire ants, fleas, ticks, spiders, and many other outdoor pests.
It is also used in some orchards to thin out blossoms on fruit trees. Carbaryl has been registered for use in pesticide products since 1959.