In plant roots, the Casparian strip is correctly described by which of the following?
a) It ensures that all minerals are absorbed from the soil in equal amounts.
b) It provides energy for the active transport of minerals into the stele from the cortex.
c) It provides increased surface area for the absorption of mineral nutrients.
d) It ensures that all water and dissolved substances must pass through a cell membrane before entering the stele.
e) It is located in the walls between endodermal cells and cortex cells.
Ans: d) It ensures that all water and dissolved substances must pass through a cell membrane before entering the stele.
You might also like to view...
Which of the following is not classified as a domain of life?
A. protists B. eukarya C. archaea D. bacteria E. Protists, eukarya, archaea, and bacteria are all domains of life.
Suppose that two alleles on one homologous chromosome are A and B, and the other homologous chromosome’s alleles are a and b.
a. How many different genetic types of gametes would be produced without crossing over? b. What are the genotypes of the gametes? c. If crossing over were to occur, how many different genetic types of gametes could occur? d. List them.
Law of Conservation of Matter
What will be an ideal response?
What keeps the trachea from collapsing?
A) Cilia B) Surface tension of water C) Surfactant D) Semicircular rings of cartilage