Which of the Following Is the Selective Barrier of a Root

question 37

Multiple Choice

Which of the following is the selective barrier of a root that determines which substances pass between the cortex and vascular tissue?

• A) epidermis
• B) endodermis
• C) cuticle
• D) xylem

---

Definitions:

tRNA Triplet

A trio of nucleotides in transfer RNA that matches a complementary codon in messenger RNA during the formation of proteins.

mRNA

Messenger RNA, a form of RNA, carries genetic instructions from DNA to the ribosome, indicating the order of amino acids for the protein products resulting from gene expression.

Collagen Protein

A major structural protein found in the skin, bones, and connective tissues of animals, essential for providing strength and elasticity.

Tyrannosaurus Rex

A large, carnivorous dinosaur that lived approximately 68 to 66 million years ago during the late Cretaceous Period, renowned for its massive size, powerful jaws, and sharp teeth.