1 Answer in one word or one line.
i) Give the common name of Periplanata americana
ii) How many spermathecae are found in earthworm?
iii) What is the position of ovaries in cockroach?
iv) How many segments are present in the abdomen of cockroach?
v) Where do you find Malpighian tubules?
Answers
Answer:
Explanation:
1. American cockroach
(i) The common name of Periplaneta americana is the American cockroach. (ii) Four pairs of spermathecae are present in earthworms. They are located between sixth and the ninth segments.
2.
Four pairs of spermathecae are present in earthworms. They are located between sixth and the ninth segments. They help in receiving and storing the spermatozoa during copulation.
3 . Hint: Ovaries are lying laterally in the abdominal segments that are connected with the oviduct from each side. In cockroach each ovary consists of eight ovarian tubules (ovarioles). Cockroaches are dioecious and both sexes have well organized reproductive organs.
4 .ten segments
The abdomen of cockroach consists of ten segments.
5. Malpighian tubules are slender tubes normally found in the posterior regions of arthropod alimentary canals. Each tubule consists of a single layer of cells that is closed off at the distal end with the proximal end joining the alimentary canal at the junction between the midgut and hindgut.