Question

Wnt signaling is involved in patterning in many tissue types where cells at the edge of the tissue will produce wnt and as the wnt ligand diffuses across the tissue different cell types are specified depending on the concentration of wnt. You are examining such a patterned tissue and notice that cells that produce wnt are also receiving the wnt signal. This is an example of what type of secretion? Select one: a. Exocrine, allomone b. Neuroendocrine c. Neurocrine d. Endocrine e. Autocrine f. Exocrine, kairomone g. Paracrine

Answer 1

G is correct answer because in paracrine secretion , ligand secreted by one cell act on its neighbours cell. Wnt. Signalling do same thing . It's effect is on neighborhood cells.