Which of the following tissue types will produce root hairs within the zone of maturation?
A. endodermis
B. cortex
C. vascular tissue
D. epidermis
Answer: D
You might also like to view...
Which of the following statements concerning cyclin-dependent kinases (CDKs) is NOT true?
A. CDKs are enzymes that attach phosphate groups to other proteins. B. CDKs are active, or "turned on," when complexed with cyclins. C. CDKs are present throughout the cell cycle. D. CDKs are inactive, or "turned off," in the presence of cyclins.
Which process generally is the cause for production of recombinant offspring for two genes on the same chromosome?
a. movement of transposable elements b. pairing of nonhomologous chromosomes c. gene duplication d. exon shuffling e. crossing over between homologous chromosomes
Which of the following is not a function of a stem of a plant?
A. storage of starch B. support C. storage of water D. production of pollen E. protection from predators
A researcher studying a member of the Conus genus of cone snails discovers that there are many dozens of slightly different variants of venom proteins coded by closely related genes. What is the most likely explanation for this great variation? [Hint: The compounds likely diversified in a similar way as the multiple globin proteins in mammals did.]
A. Concerted evolution resulted in the production of many venom genes, scattered throughout the genome. B. Hybridization between two snail species has left the offspring with multiple orthologous genes. C. Multiple gene duplication events have led to the production of a paralogous multigene family. D. Duplicated genes underwent incomplete gene conversion, leading to many errors in sequence. E. The last common ancestor of all cone snails had a diverse set of venom genes that have been inherited by all cone snails.