The spermatheca is an ectodermal organ responsible for receiving, maintaining, and releasing sperm to fertilize eggs. … The detailed structure of the cockroach spermatheca is described and discussed firstly as an example of an insect integumentary gland, and secondly, from the standpoint of its role in reproduction.
What is spermathecae in female cockroach?
Oviducts of each ovary unite into a single median oviduct (also called vagina) which opens into the genital chamber. A pair of spermatheca is present in the 6th segment which opens into the genital chamber. So, the correct answer is ‘6th abdominal segment of female’.
Is spermathecae present in male cockroach?
– Cockroaches are dioecious and both sexes have well developed reproductive organs. a. Male reproductive system consists of a pair of testes one lying on each lateral side in the 4th -6th abdominal segments. From each testis arises a thin vas deferens, which opens into ejaculatory duct through seminal vesicle.
How many spermathecae are present in cockroach?
Answer: (a) Cockroach (b) Four pairs of spermathecae are present 6-9th segments.
How many spermathecae are present in female cockroach?
So, the correct answer is ‘6th abdominal segment of female’.
Where are spermathecae located in Pheretima?
Spermathecae are present in sixth, seventh, eighth and ninth segments of the earthworm. They store the sperms received from another earthworm during copulation.
Are found in female cockroach?
The antennae of female cockroaches are relatively larger than that of the males. In the 9th sternum of abdomen a pair of small, un-jointed anal styles along with the 10th tergum of abdomen a pair of long, palp-like jointed anal cerci are present. There is only a pair of anal cerci is present in of female cockroach.
Is Spermatheca present in female cockroach?
So, the correct answer is ‘6th abdominal segment of female‘.
Is heart present in cockroach?
Note: The heart is the key organ for blood circulation. It is a muscular organ and helps in pumping blood. Cockroaches have a multi-chambered heart which has many chambers present in it.
Which structure is absent in male cockroach?
here is your answer: Spermatheca is absent in male cockroch.