Location of hepatic caeca in cockroach.
Junction of midgut and hindgut
Junction of foregut and midgut
Junction of ileum and colon
Junction of pharynx and oesophagus
Match List $I$ with List $II$ related to digestive system of cockroach.
List $I$ | List $II$ |
$A$ The structures used for storing of food | $I$ Gizzard |
$B$ Ring of $6-8$ blind tubules at junction of foregut and midgut. | $II$ Gastric Caeca |
$C$ Ring of $100-150$ yellow coloured thin filaments at junction of midgut and hindgut. | $III$ Malpighian tubules |
$D$ The structures used for grinding the food. | $IV$ Crop |
Choose the correct answer from the options given below:
Which of the following statement(s) is/are correct regarding cockroaches?
$(i)$ The body of the cockroach is segmented and divisible into three distinct regions - head, thorax and abdomen.
$(ii)$ Blood vascular system is of closed type.
$(iii)$ They are monoecious and both seves have well developed reproductive organs.
$(iv)$ The development of P. americana is paurometabolus, meaning there is development through nymphal stage.
Describe respiratory system of cockroach.
Complete the following statement :
$(a)$ In cockroach grinding of food particle is performed by ........ .
$(b)$ Malpighian tubules help in removal of ........ .
$(c)$ Hind gut of cockroach is differentiated into ........ .
$(d)$ In cockroach blood vessels open into spaces called ........ .
Draw a labelled diagram of alimentary canal of a cockroach.