Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

a. The common name of Meloidogyne sp. is root-knot nematode.
Meloidogyne incognita (root-knot nematode - RKN), also known as the southern root-nematode or cotton root-knot nematode is a plant-parasitic roundworm in the family Heteroderidae.
b. The common name of Paratylenchus is Pin nematode.
Paratylenchus hamatus, the fig pin nematode, is a species of migratory plant endoparasites, that causes lesions on plant roots resulting in symptoms of chlorosis, wilting and ultimately yield losses.
c. The common name of Pratylenchus is Lesion nematode.
Pratylenchus is a genus of nematodes known commonly as lesion nematodes. They are parasitic on plants and are responsible for root lesion disease on many taxa of host plants in temperate regions around the world.
d. The common name of Xiphinema is Dagger.
Nematodes of the genus Xiphinema, commonly called dagger nematodes, parasitize plants. Many of these nematodes, the majority of them belonging to the Xiphinema americanum-group, can transfer viruses to plants during feeding.

Honey bees can't able to distinguish Black, Red and Grey colors.
Bees can distinguish only four colours of the electromagnetic spectrum, they are yellow, blue-green, blue and ultra-violet, they cannot distinguish green colour due to their blurred vision, because bees have compound eyes made up of small eyelets.

In Pebrine disease silkworm skin becomes rubbery and dull in appearance.
Pebrine, or "pepper disease," is a disease of silkworms, which is caused by protozoan microsporidian parasites. The parasites infect eggs and are therefore transmitted to the next generation.
The silkworm larvae infected by pebrine are usually covered in brown dots and are unable to spin silkworm thread.

The major predator of lac insect is Eublemma amabilis.
This white moth is the most destructive predator of lac insects and causes the most damage during Kartiki and Aghani lac crops, i.e., during the rainy season in comparison to the other two crops.
It was observed that the Eublemma amabilis, Holcocera pulverea and Chrysopa species are the major predators of lac and lac insects.

Egg larval parasitoid Chelonus blackburni is used to check the population of Phthorimaea operculella.
Phthorimaea operculella, also known as the potato tuber moth or tobacco splitworm, is a moth of the family Gelechiidae. It is an oligophagous insect that feeds on the plant family Solanaceae and is especially known for being a major pest of potato crops.
The egg-larval parasitoid Chelonus blackburni attacks the egg stage and completes development in the larval stage of the host.

The type of oesophagus, where oesophagus is ventrally lobed is Helicotylenchus type.
Lip region with small abial disc, with 4 - 5 annuIi, 6 fLm % 0.5 wide and 3 - 4 fLm high with the well-developed labial framework.
Oesophagus is long with large rounded median bulb, long isthmus and oesophageal glands overlapping intestine ventrally and dorsally.
Phasmids pore-like situated at anus level, tram 2 annuIi posterior to 6 anterior to it and in the middle of the inner two incisures or closer to the ventral one.

Chlorpyriphos insecticide may be recommended for the control of termites.
It is an organophosphate insecticide that is generally used as an Anti-Termite agent in building construction.
Chlorpyrifos 20% EC. This multitalented insecticide controls all sucking, biting, chewing and soil pests along with termites. This is used as a liquid termite repellent.

The tarsal formula for meloidae is 5-5-4.
Tarsal formula is the number of segments of the tarsi, which has 3 numbers a-b-c, starting with the fore leg, then the middle leg, then the hind leg.
The tarsal formula is 5-5-4, but the tarsal claws of meloids are split lengthwise to give the appearance of four claws on each foot.
A tarsal formula of "5-5-4" means there are 5 segments in the fore leg's tarsi, 5 segments in the middle leg's tarsi, and 4 segments in the hind leg's tarsi.

Locust lays eggs in the soil.
Desert Locust females lay eggs in an egg pod primarily in sandy soils at a depth of 10 - 15 centimetres below the surface.
A solitary female lays about 95 - 158 eggs whereas a gregarious female lays usually less than 80 eggs in an egg pod.

Haemocyte with the largest nucleus is Prohaemocyte.
The largest haemocyte type had an eccentric nucleus and a large cytoplasmic vacuole.
Prohaemocytes were the smallest cell type, spherical with a centrally located large nucleus.
The plasmatocytes were polymorphic with or without cytoplasmic extensions. The granulocytes were spherical or oval with characteristic basophilic granules in the cytoplasm.