In the blood vascular system of earthworm there are four pairs of hearts present in the first 13 segments. These are situated in the segments
7th, 8 th, 9th and 10th
8th, 10th, 12th and 15th
8th, 9th, 12th and 13th
7th, 9th, 12th and 13th
- Nereis is commonly called
- In earthworm testes are situated in the
- The female genital aperture in earthworm is present ventrally on segment
- Blood glands in Earthworm are associated with
- Sperma thecae in earthworm are meant few
- The septal and pharyngeal nephridia open into the alimentary canal and are of enteronephric type. It…
- In earthworm, the genital papillae are situated ventrally on segments
- The direction of blood flow in the dorsal vessel of earthworm is
- In Pheretima, the blood glands are located
- The dorsal blood vessel in earthworm is
- The number of segments in leech is
- In earthworm, the circular muscles are highly developed in
- Chloragogen cells of Pheretima play a role very much like that of
- In earthworm, the first segment in which mouth is situated is known as
- Totally marine annelids belong to the
- Haemoglobin is dissolved in plasma is
- The cliteilum singulum in earthworm is formed by
- Which region in earthworm is the forest of nephridia ?
- Which of the following statements is correct ?
- 5. The pre-typhlosolar region in Pheretima extends from
- In earthworm fertilisation occurs in
- A skeleton like function during locomotion of Pheretima is performed by
- Pheretima is
- The coelom in Pherethna is
- Earthworm is useful because it
- The coelomic fluid in earthworm escapes through
- The gizzard of earthworm is an organ of
- Nephrostomes are found in
- The terminal nephridial ducts of the septal nephridia of Pheretima open into
- Chromophil cells in earthworm are concerned with the secretion of