Review Questions
4. Plant regions of continuous growth are made up of ________.
- dermal tissue
- vascular tissue
- meristematic tissue
- permanent tissue
5. Which of the following is the major site of photosynthesis?
- apical meristem
- ground tissue
- xylem cells
- phloem cells
6. Stem regions at which leaves are attached are called ________.
- trichomes
- lenticels
- nodes
- internodes
7. Which of the following cell types forms most of the inside of a plant?
- meristem cells
- collenchyma cells
- sclerenchyma cells
- parenchyma cells
8. Tracheids, vessel elements, sieve-tube cells, and companion cells are components of ________.
- vascular tissue
- meristematic tissue
- ground tissue
- dermal tissue
9. The primary growth of a plant is due to the action of the ________.
- lateral meristem
- vascular cambium
- apical meristem
- cork cambium
10. Which of the following is an example of secondary growth?
- increase in length
- increase in thickness or girth
- increase in root hairs
- increase in leaf number
11. Secondary growth in stems is usually seen in ________.
- monocots
- dicots
- both monocots and dicots
- neither monocots nor dicots
12. Roots that enable a plant to grow on another plant are called ________.
- epiphytic roots
- prop roots
- adventitious roots
- aerial roots
13. The ________ forces selective uptake of minerals in the root.
- pericycle
- epidermis
- endodermis
- root cap
14. Newly-formed root cells begin to form different cell types in the ________.
- zone of elongation
- zone of maturation
- root meristem
- zone of cell division
15. The stalk of a leaf is known as the ________.
- petiole
- lamina
- stipule
- rachis
16. Leaflets are a characteristic of ________ leaves.
- alternate
- whorled
- compound
- opposite
17. Cells of the ________ contain chloroplasts.
- epidermis
- vascular tissue
- periderm
- mesophyll
18. Which of the following is most likely to be found in a desert environment?
- broad leaves to capture sunlight
- spines instead of leaves
- needle-like leaves
- wide, flat leaves that can float
19. When stomata open, what occurs?
- Water vapor is lost to the external environment, increasing the rate of transpiration.
- Water vapor is lost to the external environment, decreasing the rate of transpiration.
- Water vapor enters the spaces in the mesophyll, increasing the rate of transpiration.
- Water vapor enters the spaces in the mesophyll, decreasing the rate of transpiration.
20. Which cells are responsible for the movement of photosynthates through a plant?
- tracheids, vessel elements
- tracheids, companion cells
- vessel elements, companion cells
- sieve-tube elements, companion cells
21. The main photoreceptor that triggers phototropism is a ________.
- phytochrome
- cryptochrome
- phototropin
- carotenoid
22. Phytochrome is a plant pigment protein that:
- mediates plant infection
- promotes plant growth
- mediates morphological changes in response to red and far-red light
- inhibits plant growth
23. A mutant plant has roots that grow in all directions. Which of the following organelles would you expect to be missing in the cell?
- mitochondria
- amyloplast
- chloroplast
- nucleus
24. After buying green bananas or unripe avocadoes, they can be kept in a brown bag to ripen. The hormone released by the fruit and trapped in the bag is probably:
- abscisic acid
- cytokinin
- ethylene
- gibberellic acid
25. A decrease in the level of which hormone releases seeds from dormancy?
- abscisic acid
- cytokinin
- ethylene
- gibberellic acid
26. A seedling germinating under a stone grows at an angle away from the stone and upward. This response to touch is called ________.
- gravitropism
- thigmonasty
- thigmotropism
- skototropism