AP BIOLOGY

PLANTS

CLASSIFICATION OF PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Name the root that continues to grow straight down into the soil and may have other roots branching off of it.
A
fibrous root
B
taproot
C
vascular bundles
D
xylem
Explanation: 

Detailed explanation-1: -A taproot is a large, central, and dominant root from which other roots sprout laterally. Typically a taproot is somewhat straight and very thick, is tapering in shape, and grows directly downward.

Detailed explanation-2: -Taproots are large roots that grow straight down below the trunk of the tree. Compacted soil makes it difficult for trees to develop such a root.

Detailed explanation-3: -Fibrous root systems have many small branching roots, called fibrous roots, but no large primary root. The huge number of threadlike roots increases the surface area for absorption of water and minerals, but fibrous roots anchor the plant less securely.

Detailed explanation-4: -A tap root system penetrates deep into the soil. In contrast, a fibrous root system is located closer to the soil surface where it forms a dense network of roots that also helps prevent soil erosion (lawn grasses are a good example, as are wheat, rice, and corn).

Detailed explanation-5: -A taproot is a long, thick root that points straight down. Smaller roots can grow out of its sides. Plants with taproots include carrots and dandelions. Fibrous roots are made up of many small roots, all about the same size.

There is 1 question to complete.