Muscular movements of alimentarey canal are known as
peristalsis
diastole
systole
muscles contraction
First heart sound is produced during closure of
auriculo-ventricular valves
eustachian valve
sinus valve
seminular valves
In motor neuron the impulse following in which direction?
In two direction
In one drection
In all direction
None of the above
Haemoglobin in earthworm is present in
RBC
protoplasm
coelomic fluid
plasma
D.
plasma
Haemoglobin in earthworm is dissolved in plasma. It is a protein in RBCs to carry oxygen around their bodies. It is not found in the corpuscles like the vertebrates but is found dissolved in plasma.
Fertilization in earthworm is
cross fertilization
combined fertilization
self-fertilization
All of the above