Which trait did gregor mendel examine from the pea plant when he planned his study?

a
plant height
b
color of the plant flower
c
traits that were easy to distinguish
d
all of the above

This post might have the info you need:

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.