Use a tabular format to compare and contrast the structure and function of xylem and phloem. What will be an ideal response?
Your table should include characteristics of vessel elements, tracheids, sieve tube elements,
and companion cells from Table 33-3 on textbook page 715. Because xylem and phloem also
contain parenchyma and sclerenchyma, your table should also include characteristics of those
tissues as shown in Table 33-2 on textbook pages 712-713.
You might also like to view...
The wood of gymnosperms is composed of ______________, and the wood of angiosperms (e.g., a cherry blossom) can consist of ______________________
A. tracheids; fibers and vessel elements B. fibers and tracheids; vessel elements C. vessel elements and fibers; tracheids D. tracheids and vessel elements; fibers
Which of the following statements about the cell cycle is correct?
A. The cell cycle is a sequence of replications and divisions that produces a new cells. B. The phases of the cell cycle are G1, S, and M phases. C. In actively dividing cells, the S and G2 phases are collectively known as interphase. D. When the S phase of the cell cycle is finished, a cell has twice as many chromatids as the number of chromosomes in the G1 phase. E. During G2 phase, the cell grows and copies its chromosomes in preparation for cell division.
___________ is the separation of two complementary strands of DNA upon heating above a certain temperature.
A. Multiplexing B. Thermocycling C. Annealing D. Denaturation
Imagine that you are an archaeologist on a dig somewhere on an East Asian island and than you begin to excavate an area littered with stone tools that also has the remains of an ancient fire
Subsequent carbon dating of the charcoal from the fire yields a date of 100,000 years before the present. Given these circumstances, which species would you expect most likely set that fire? A) Australopithecus afarensis B) Homo erectus C) Homo ergaster D) Ardipithecus ramidus