Agricultural Entomology MCQ Question and Answer | Agriculture MCQ Question

Study of animal behaviour is called Ethology.
Ethology is the scientific study of non-human animal behaviour, usually with a focus on behaviour under natural conditions, and viewing behaviour as an evolutionarily adaptive trait.
The term ethology derives from the Greek language, ethos meaning "character" and logia meaning "the study of". The term was first popularized by American myrmecologist William Morton Wheeler in 1902.

Flared squares (Flare-up) are the damage symptoms of Earias vitella.
Earias vittella larvae are brownish with longitudinal white stripes on dorsal side having orange dots on prothorax without finger shaped process on the cream colored body.
E. insulana has finger shaped process on at least two thoracic segments and all abdominal segments.

Epiricania melanoleuca is Ectoparasitiod of sugarcane pyrilla.
Epiricania melanoleuca is a moth in the family Epipyropidae. It was described by Thomas Bainbrigge Fletcher in 1939. It is found in India, where its larvae are external parasitoids of the sugarcane planthopper (Pyrilla perpusilla). It has been used in biological pest control against this pest.

Sugarcane crop has had the outbreak of wooly aphids noticed recently.
Sugarcane woolly aphid, Ceratovacuna lanigera Zehntner has been recently reported in outbreak proportions from western and southern India.
Though the pest was first reported from West Bengal in 1958 and later from other parts of Northeast India, it had not made its way to other parts of India.

In Thysanura, styliform appendages are found in 2^nd to 9^th abdominal segments.
Thysanura is an order in the class Insecta. They are also both wingless and have bodies covered with fine scales, rather like the scales of the practically unrelated Lepidoptera.
They have long antennae and two or three long, appendages at the end of the abdomen (cerci). Bristletails have chewing mouthparts and develop without metamorphosis; that is, the young or growing stages closely resemble the adults, except they are smaller.

Protrusible hollow stylet types of mouth parts are possessed by plant parasitic nematodes.
At the head of a plant-parasitic nematode is a hollow mouth spear (like a hypodermic needle) called a stylet. The mouth cavity is armed with a protrusible stylet in the form of a hollow needle, which is used to puncture plants to obtain liquid food.
The nematode uses this stylet to puncture plant cells, withdraw food, and also to secrete protein and metabolites that aid the nematode in parasitizing the plant.

Earthworm has a circulatory system that is extensive and Closed type.
An earthworm is a terrestrial invertebrate that belongs to the phylum Annelida. They exhibit a tube-within-a-tube body plan, they are externally segmented with corresponding internal segmentation and they usually have setae on all segments.
Earthworms have a dual circulatory system in which both the coelomic fluid and a closed circulatory system carry food, waste and respiratory gases.
The closed circulatory system has five main blood vessels: the dorsal (top) vessel, which runs above the digestive tract, the ventral (bottom) vessel, which runs below the digestive tract; the subneural vessel, which runs below the ventral nerve cord; and two lateroneural vessels on either side of the nerve cord.

Nematode fungus interaction was first reported by Atkinson.
The first example of a nematode-fungi disease complex in plants was described by Atkinson, in 1892, where he reported that the fusarium wilt of cotton was more severe in the presence of root-knot nematodes.

Cosmopolites sordidus the banana rhizomes weevil belong to Cucurlionidae.
Cosmopolites sordidus, commonly known as the banana root borer, banana borer, or banana weevil is a species of weevil in the family Curculionidae.
It is a pest of banana cultivation and has a cosmopolitan distribution, being found in all parts of the world in which bananas are grown. It is considered the most serious insect pest of bananas.

Fan-like Antenna is present in Strepsipterans.
The Strepsiptera are an order of insects with eleven extant families that include about 600 described species.
The Stylopidae have four-segmented tarsi and four- to six-segmented antennae, with the third segment having a lateral process. Males of the Strepsiptera have wings, legs, eyes, and antennae.
The hindwings are generally fan-shaped, and have strongly reduced venation. The antennae are flabellate, and are covered in specialized chemoreceptors.