Which organism's body is composed of $33$ somites?

The canals seen in the bones of mammals are:

The total number of teeth in a rabbit is:

The seminal vesicle or uterus masculinus in rabbit is found at the junction of

Choose the correct group of structures that are associated with any one specific system in both cockroach and frog.

Read the following statements about cockroach :
$(a)$ In male cockroach a characteristic mushroom shaped gland is present in the $6^{th}-7^{th}$ abdominal segments which functions as an accessory reproductive gland.
$(b)$ Cockroach is uricotelic.
$(c)$ The fat body and uricose gland help in excretion.
$(d)$ Blood from sinuses enter heart through ostia and is pumped anteriorly to sinuses again.
Which of the above statements are correct?