a sample of working model for science exhibition

what is the difference of anal cerci in male cockroachand in female cockroach?

scientific name of earthworm

What is the difference between cutaneous respiration & pulmonary respiration ????

name the animal tissue whose cell divide throughout the life

What is the alary muscles in cockroach ?

How is the brood pouch formed in a female cockroach? Name the parts present in it.

WHAT IS THE FUNCTION OF INTESTINAL CEACUM?

 what is copulatory pad?

maam ,  what are annal styles? what are anal cerci? ....show wid a diagram plz

What is epicrine gland?

If cockroaches have closed circulatory system than how can the blood circulate in whole body??

What is a tegima ?

 atleast for now upload digrams

diagram of skeletal muscle