Question

questions18-27

18. The is a primary meristem that produces parenchyma cells of the cortex. a) procambium b) ground meristem c) protoderm d) phelloderm e) pericycle 19. Which of the following statements about monocot stems is true? a) They have no vascular cambium b) Their vascular bundles are arranged in a ring e) Most of them are woody d) They have a definite cortex and pith c) Their stems generally have conspicuous cork. 20. Older, nonfunctioning xylem tissue in a tree stem is called c. heartwood d. late wood a. sapwood b. early wood 21. In a woody plant with ring-porous wood, the largest vessel elements are found in the a. sapwood b. early wood c. heartwood d. late wood 22. Which of the following tissues has sugar conduction as a primary function? b. parenchyma c. xylem e.phloem 23. Guard cells differ from other epidermal cells in having: a uniformly thickened walls b. no nucleus d. surface hairs e. large pores in the walls. c. chloroplasts 24. Vessels (also called vessel members) are different from tracheids because a) vessels conduct sugars, tracheids conduct water b) vessels are living cells, tracheids are dead cells c) vessels have open or perforated end walls, tracheids do not d) vessels have smooth walls, tracheids have perforated end walls 25. Which of the following tissues is common in roots but not in stems? a. endodermis b. parenchyma c. cortex d. epidermis e. pith 26. In addition to anchoring a plant, roots usually function directly in which of the following? a. photosynthesis b. production of oxyger c. production of bud scales absorption of minerals in solution e. all of these answers are correct 27. From root hair to xylem which of the ollowing best describes the journey of water entering a plant? a) cortex to endodermis to epidermis b) endodermis to epidermis to cortex c) cortex to epidermis to endodermis d) epidermis to cortex to endodermis

Answer 1

18. (b) Ground meristem

19. (a) They have no vascular cambium

20. (c) Heart wood

21. (b) Early wood

22. (e) phloem

23. (c) chloroplasts

24. (c) vessels have open or perforated end walls, tracheids do not.

25. (a) endodermis

26. (d) absorption of minerals in solution

27.(d) epidermis to cortex to endodermis