Artichoke hearts are tender and have a strong taste. The leaves have a strong taste, too, but most of an artichoke leaf is fibrous and too difficult to chew. The leaves must contain lots of __________.

The plant tissue system most analogous to our circulatory system is the __________.

Ground tissue is composed of undifferentiated cells with thin walls that are usually involved with storage. The inner portion of the ground tissue of a nonwoody stem is called __________, and the outer portion is called __________.

Which of the following cells are dead at functional maturity?

Most of the photosynthesis in plants takes place in specialized __________ cells called the __________.

Which of the following correctly describes a feature unique to monocot stems?

Which of the following is closest to the center of a woody stem?

Wood is composed primarily of __________.