In which part of a flower is pollen produced?
A.)the stamen
B.)the stigma
C.)the style
D.)the pistil

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.

not: both offer magnification to the atomic level.