Agricultural Entomology - Study Mode

[#446] A specialized membrane called 'trophamnion' is found in following type of reproduction
Correct Answer

(C) Polyembryony

Explanation

Solution: A specialized membrane called 'trophamnion' is found in Polyembryony type of reproduction. The meaning of trophamnion is a nutritive sheath that sometimes invests the embryonic portion of the insect egg, especially in polyembryonic insects. It is a giant unicellular provisory structure derived from the second polar body and performs both protective and digestive functions. Polyembryony refers to the splitting of one sexually produced embryo into many offspring, which are genetically identical to each other but distinct from their parent, thus differing from asexual budding.

[#447] Locust is belong to the family?
Correct Answer

(B) Acrididae

Explanation

Solution: Locusts belong to the family Acrididae. Locusts are various species of short-horned grasshoppers in the family Acrididae that have a swarming phase. Locusts are the swarming phase of certain species of short-horned grasshoppers in the family Acrididae. These insects are usually solitary, but under certain circumstances become more abundant and change their behaviour and habits, becoming gregarious.

[#448] Fundulus sp. is an example of
Correct Answer

(B) Mosquitocidal fish

Explanation

Solution: Fundulus sp. is an example of Mosquitocidal fish. Fundulus is a genus of ray-finned fishes in the superfamily Funduloidea, family Fundulidae. It belongs to the order toothcarps, and therein the large suborder Cyprinodontoidei. Fundulus have evolved to occupy a wide range of aquatic ecosystems, including marine, estuarine, and freshwater, making it a good comparative model system for studying evolutionary divergence between marine and freshwater environments.

[#449] Following fungus is effective on root grubs
Correct Answer

(D) Metarrhizium anisopliae

Explanation

Solution: Metarrhizium anisopliae fungus is effective on root grubs. Metarhizium anisopliae is a fungus that grows upon insect host cuticle. It is a fungus that grows naturally in soils throughout the world and causes disease in various insects by acting as a parasitoid. The disease caused by the fungus is sometimes called green muscardine disease because of the green colour of its spores. The cuticle of the cadaver often becomes red. If the ambient humidity is high enough, a white mould then grows on the cadaver that soon turns green as spores are produced.

[#450] Nutritional studies is carried out by use of
Correct Answer

(C) Cockroaches

Explanation

Solution: Nutritional studies are carried out by use of Cockroaches. Cockroaches are an important source of food for several organisms, including arthropods, birds, and mammals. As such, they are an important part of the food chain. Cockroaches also play an extremely important role in nutrient cycling. Cockroach contains protein crystals that contain a considerable amount of energy, much higher than that found in dairy milk from cows. The proteins are also packed with a large number of essential amino acids, which are good for muscle repair.