← Plant Unit Test Test
5 Written Questions
5 Matching Questions
- Biological clock
- Monocot characteristics
- Apical dominance
- a In a plant, the hormonal inhibition of axillary buds by a terminal bud. Concentrating resources on growing taller, it is an evolutionary adaptation that increases the plant's exposure to light.
- b - A flowering plant whose embryos have a single seed leaf, or cotyledon; parallel veins; vascular bundles are scattered; petals in multiples of 3; fibrous root system.
- c An internal timekeeper that controls an organism's biological rhythms; marks time with or without environmental cues, but often requires signals from the environment to remain tuned to an appropriate period.
- d A close association between a fungus and an alga or between a fungus and a cyanobacterium, some of which are known to be beneficial to both partners.
- e A study of how animals medicate themselves with plants
5 Multiple Choice Questions
- An organism that has acquired one or more genes by artificial means. If the gene is from another species, the organism is also known as a transgenic organism; little genetic variability; monocultures; wiped out by one disease.
- - Flowering occurs when the night length is less (10hrs)
- A dark interval that is too long will not produce flowers
- Flowering can be induced by a flash of light during the night
- Flower in the summer
- Ex. Potatoes, corn, marigolds, geraniums, begonias
- A meristem at the tip of a plant root or in the terminal or axillary bud of a shoot.
- - In the center of trees, the darkened, older layers of secondary xylem made up of cells that no longer transport water and are clogged with resins.
5 True/False Questions
stigma → The sticky tip of a flower's carpel, which traps pollen grains
Function of ethylene → Promotes fruit ripening
xylem → The portion of a plants vascular tissue system that conveys phloem sap throughout a plant. Phloem tissue is made up of sieve-tube members. LIVING CELLS MOVES SUGARS UP AND DOWN
Soil conservation methods → water is pulled up the xylem as water evaporates from leaves due to adhesion and cohesion.
plants first line of defense → epidermis