Question

write the function of alimentary canal of cockroach with diagrams ???​

Answer 1

the oesophagus. opens into a sac like structure called the crop that store food. the gizzard is the next structure that is present after the crop. it helps in grinding the food particles due to the presence of six chitinous plates called teeth..

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Answer 2

Explanation:

Cockroaches are an integral part of the food chain. Cockroaches are an important source of food for a number of organisms, such as arthropods, birds, and mammals. As such, they are an important part of the food chain. Cockroaches also play an important role in nutrient recycling. Cockroaches are insects of the order Blattodea, which also includes termites. About 30 cockroach species out of 4,600 are associated with human habitats. About four species are well known as pests.

Cockroach

Temporal range: 145–0 Ma

PreЄЄOSDCPTJKPgN

Cretaceous–recent

Snodgrass common household roaches.png

Common household cockroaches

A) German cockroach

B) American cockroach

C) Australian cockroach

D&E) Oriental cockroach (♀ & ♂)

Scientific classification

Kingdom:

Animalia

Phylum:

Arthropoda

Class:

Insecta

Superorder:

Dictyoptera

Order:

Blattodea

Families

Blaberidae

Blattidae

Corydiidae

Cryptocercidae

Ectobiidae

Lamproblattidae

Nocticolidae

Tryonicidae

The cockroaches are an ancient group, dating back at least as far as the Carboniferous period, some 320 million years ago. Those early ancestors however lacked the internal ovipositors of modern roaches. Cockroaches are somewhat generalized insects without special adaptations like the sucking mouthparts of aphids and other true bugs; they have chewing mouthparts and are likely among the most primitive of living neopteran insects. They are common and hardy insects, and can tolerate a wide range of environments from Arctic cold to tropical heat. Tropical cockroaches are often much bigger than temperate species, and, contrary to popular belief, extinct cockroach relatives and 'roachoids' such as the Carboniferous Archimylacris and the Permian Apthoroblattina