On its head the Dugesia have lateral lobes and sensory organs called eyespots with make the dugesia look like it actually has eye on its head.
during ciliary movement in dugesia it holds the head in slanded pasition. since the cilia are absent in head region the place the head a little raised. thus in such ciliary movement head movements are different from tail movement.
Head - Tail - Tail - Head
The structure of a sperm suited for fertilization in various ways. The basic features are the head and the tail which allow it to swim towards the ova for fertilization.
hydrophillic head, hydrophobic tail, hydrophobic tail, hydrophillic head
Spermiogenesis
during ciliary movement in dugesia it holds the head in slanded pasition. since the cilia are absent in head region the place the head a little raised. thus in such ciliary movement head movements are different from tail movement.
during ciliary movement in dugesia it holds the head in slanded pasition. since the cilia are absent in head region the place the head a little raised. thus in such ciliary movement head movements are different from tail movement.
dimond head, rattle on its tail.
(1,head,head),(1,head,tail),(1,tail,head),(1,tail,tail) (2,head,head), (2,head,tail),(2,tail,head),(2,tail,tail), (3,head,head), (3,head,tail),(3,tail,head),(3,tail,tail), (4,head,head), (4,head,tail),(4,tail,head),(4,tail,tail), (5,head,head), (5,head,tail),(5,tail,head),(5,tail,tail), (6,head,head), (6,head,tail),(6,tail,head),(6,tail,tail),
Head - Tail - Tail - Head
A and B is a vector by replacing the tail of the B on the head of the A and the join the tail of the A with the head of the B this method is called head to tail rule
smiles
the head to tail rule
church
nothing has only a head and a tail tadpole or coin
The Foetus shows only some human features, such as; - The head - The outline of a brain - The tail of the body (as there are no feet yet) - The back/spine - The outline of the arms Hope this helps :)
In addition of vector when vector A whose head is joined to the tail of the vector B and then the tail of the vector A is linked with the tail of the resultant vector and the head of the vector B is joined with the head of the resultant vector..... it means the addition of vectors are also defined the head to tail rule..