The direction of blood flow in the dorsal vessel of earthworm is
from the posterior to the anterior end
from the anterior end to the posterior end
from dorsal vessel to ventral vessel
alternately in both directions (a) and (b)
- Chloragogen cells of Pheretima play a role very much like that of
- Nereis is commonly called
- In earthworm fertilisation occurs in
- A skeleton like function during locomotion of Pheretima is performed by
- The fertilization in earthworms occurs in
- Copulation occurs between two earthworms
- In earthworm, the nephridia without neprostomes are
- The septal and pharyngeal nephridia open into the alimentary canal and are of enteronephric type. It…
- The direction of blood flow in the dorsal vessel of earthworm is
- Nephrostomes are found in
- The enteronephric nephridia in earthworm are
- Sperma thecae in earthworm are meant few
- Earthworm has no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic…
- The female genital aperture in earthworm is present ventrally on segment
- In earthworm testes are situated in the
- In earthworm, the septal nephridia put their excretory discharge into
- Pheretima is
- Which of the following statements is correct ?
- The cliteilum singulum in earthworm is formed by
- The dorsal blood vessel in earthworm is
- Haemoglobin is dissolved in plasma is
- Role of typhlosole in the intestine of earthworm is
- Earthworm is useful because it
- A chitinous lining in earthworm is found in
- Earthworms do not have any respiratory organs because
- The coelom in Pherethna is
- In earthworm, the circular muscles are highly developed in
- The chloragogen cells of earthworm are analogous to
- Metamerism is present in
- Which region in earthworm is the forest of nephridia ?