Which of the following choices is not part of a grain?
a. germ
b. pectin
c. bran
d. husk

The correct answer is B - Pectin.

Pectin is not part of a grain.

A grain is composed of :

1. Bran - outer layer of  a grain and it contains fiber, B-Vitamins and antioxidants.

2. Endosperm - middle largest layer containing mostly carbohydrates and protein  as well as small amounts of vitamin B and minerals.

3.Germ - it is the inner component of the grain and contains antioxidants, phytochemicals, B vitamins and healthy fats.

4. Husk or hull - this is the outer shell or coating of seed and which plays a protective role in protecting the inner contents of the seed.

the answer is d p: cell, q: organ, r: organ system, s: tissue