The waxy barrier called the directs water from the roots into the endodermis and then into the xylem.
A. Casparian strip
B. companion cells
C. cuticle
D. sieve tubes
E. epidermis
A. Casparian strip
You might also like to view...
What is the only group of Mollusca that does NOT have a radula?
A) Bivalves B) Gastropods C) Chitons D) Cephalopods E) All mollusk have a radula.
The first group of plants with flowers were:
a. algae b. fern allies c. ferns d. angiosperms e. gymnosperms
In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls
flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P) is dominant to the allele for white (p). A tall plant with purple flowers crossed with a dwarf plant with white flowers produces 1/4 tall purple, 1/4 tall white, 1/4 dwarf purple, and 1/4 dwarf white. What is the genotype of the parents? What will be an ideal response?
In the Hardy-Weinberg equation, p and q are ________.
A. phenotypes B. genotypes C. measures of fitness D. mutation rates E. allele frequencies