Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

An insecticide that is used as a seed treatment for sucking pest management is Imidacloprid.
Imidacloprid 70 WS is a seed dressing formulation of an insecticide used for the management of sucking pests. This insecticide belongs to chloro-chotinyl group and controls sucking pests of cotton viz., thrips, aphids and jassids of cotton up to 45 days after sowing.
Imidacloprid seed treatment was effective against the sucking pests jassids, aphids and thrips that are normally present in this region.

JH hormone is also known as 'neotenin'.
Juvenile hormones (JHs) are a group of acyclic sesquiterpenoids that regulate many aspects of insect physiology. The first discovery of a JH was by Vincent Wigglesworth. JHs regulate development, reproduction, diapause and polyphenisms.
In insects, JH (formerly called neotenin) refers to a group of hormones, which ensure growth of the larva, while preventing metamorphosis.
Juvenile hormones are secreted by a pair of endocrine glands behind the brain called the corpora allata. JHs are also important for the production of eggs in female insects.

In insects and houseflies, DDT is converted to DDE.
Dichlorodiphenyltrichloroethane (DDT) is an insecticide used in agriculture.
When applied to soil DDT is digested by bacteria and slowly converted into DDE, which is even more persistent in the environment than and at least as toxic as DDT.
In insects, the best known metabolite of DDT is DDE, the ability to dehydrochlorinate DDT to DDE is the major cause of the resistance of DDT-resistant houseflies.

In Coleoptera insects vas deferens is a long coiled tube called as epididymis.
Beetles are insects that form the order Coleoptera, in the superorder Endopterygota. Their front pair of wings are hardened into wing cases, elytra, distinguishing them from most other insects.
Epididymis is a narrow, tightly-coiled tube that is attached to each of the testicles. It is a long tube that is located near each testicle. The epididymis is the tube that moves the sperm from the testicles.

Locust swarms often enter India from the state of Rajasthan.
Desert locusts can be considered to be natives of Saudi Arabia or the Arabian Peninsula. Following the monsoon winds, they arrive in India Rajasthan and Gujarat particularly - every year. An average of 10 locust attacks or swarms are seen in India in a normal year.
The gregarious form arises from an increase in population density which causes the locusts to aggregate. Locusts need to multiply, concentrate and aggregate for swarms to form.

Ensign wasp is parasitic on ootheca of cockroach.
The female ensign wasps seek out cockroach egg cases, known as ootheca, where she will lay an egg in one of the cockroach eggs inside the egg case.
The wasp's egg hatches and the larva eats the egg which was laid. Successive instars of the larva eat the other eggs within the egg case.

The insects which are both forward and backward running habit Embioptera.
The name Embioptera ("lively wings") comes from Greek (embios), meaning "lively", and (pteron), meaning "wing", a name that has not been considered to be particularly descriptive for this group of fliers, perhaps instead referring to their remarkable speed of movement both forward and backward.
On landing, these chambers deflate and the wings become flexible, folding back against the body. Wings can also fold forwards over the body, and this, along with the flexibility allows easy movement through the narrow silk galleries, either forwards or backwards, without resulting in damage.

The vector of rice tungro disease is Nepholettix virescens.
Tungro virus disease is transmitted by leafhoppers, wherein the most efficient vector is the green leafhopper, Nephotettix virescens.
The disease complex is associated with the rice tungro baciliform virus (RTBV) and rice tungro spherical virus (RTSV). RTBV cannot be transmitted by leafhoppers unless RTSV is present.

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.

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.