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Morphology of cockroach

 Morphology 

The term morphology deals with the study of the forms and the external structures of any living organism which has the dimensions, form, and structure. 

There are 3 main varieties of morphology 

Cellular morphology 

Tissue morphology 

Organ morphology

 Animal morphology is best explained with the samples of Cockroaches. 

Cockroaches are nocturnal omnivorous organisms that sleep in damp places. 

The body of roach is divided and clevable into head, thorax and abdomen. 

Body

 The body is roofed by onerous polysaccharide frame. 

Head 

It is triangular in form fashioned by fusion of six segments to indicate flexibility. 

Head bears compound eyes and antenna hooked up on head that support in observance the environment. 

Thorax

 It consists of 3 parts- thorax, mesothorax and meta thorax.

 Forewing and hind wings are hooked up with a thorax.

Abdomen consists of ten segments. 

Alimentary canal 

 It is divided into fore gut, mid gut, and hind gut.

 Food is keep in crop. 

Pouch facilitate in grinding the food particles. 

At the junction of middle gut and hind gut yellow colored threadlike structure malpighian tubules are gift that facilitate in excretion.

 Blood vascular system 

It is open sort, having poorly developed blood vessels. 

The haemolymph contains of colorless plasma and haemocytes. 

Respiratory system 

It consists of network of trachea that open through ten pairs of spiracles on lateral facet. 

Nervous system 

The system of cockroach created of a series of amalgamated, segmentally organized ganglia joined by paired longitudinal connectives on the ventral facet. 

3 ganglia belong the thorax, and 6 ganglia within the abdomen. 

The system of cockroach is unfold Overall, the body. 

Eye 

Each optic of cockroach consists of regarding 2000 polygonal shape ommatida. 

A roach will receive many pictures of associate degree object with the assistance of assorted ommatida.

 This sort of vision is termed as mosaic vision with additional sensitivity, however, less resolution. 

Reproduction 

Cockroaches are dioecious. 

Male genital system composed of a combine of testes one lying on every lateral facet in fourth -6th abdominal segments. 

The feminine genital system consists of two massive ovaries placed on second — sixth abdominal segments. 

Fertilization 

The fertilized eggs are incased in capsules known as ootheacea, nine -10 ootheace are created by every feminine. 

Male cockroach 

The abdomen is long and narrow. 

Brood pouch is absent. 

Males have longer antenna. 

Anal designs are gift. 

Female cockroach 

The abdomen is brief and broad. 

Brood pouch is present. 

Females have shorter antenna. 

Anal designs are absent.

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