Blood from the seminal vesicles and reproductive organs is collected by the ..........

What does the part labeled "a" in the given figure represent?

In $Pheretima$,nephridia occur in:

Identify the incorrect statements among the following:
$(a)$ In earthworm,a single male genital pore is present.
$(b)$ Setae help in locomotion of earthworm.
$(c)$ The muscular layer in the body wall of earthworm is made up of only circular muscles.
$(d)$ Typhlosole is a part of the intestine of earthworm.

In which of the following are the nephridial funnels (nephrostomes) present?

Definitions / Explanation:
$(i)$ Exonephric
$(ii)$ Enteronephric