Multiple Choice Over time, a particular plant has developed a longer stamen. Which of the following is a possible advantage of having a longer stamen?
A. A longer stamen could ensure that an insect brushes against an anther and picks up pollen.
B. A longer stamen could ensure that the flower produces more nectar.
C. A longer stamen could ensure that pollen could reach the ovary and fertilize the egg.
D. A longer stamen could ensure that the developing flower is well protected.

A) A longer stamen could ensure that an insect brushes against an anther and picks up pollen.

Explanation:

The stamen will provide easier access to the pollen.

Hope this helps :)

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.