Plant Propagation Question Preview (ID: 54359)
Plant Propagation Review For PSI.
TEACHERS: click here for quick copy question ID numbers.
What is the best explanation as to why seeds of many plants have to be sowed below the soil surface in order to germinate?
a) Those seeds require bacterial action on the seed coat.
b) Those seeds require darkness in order to germinate.
c) Those seeds require lower levels of carbon dioxide.
d) Those seeds require the cool temperatures of the soil.
Which of the following are characteristics of a good germination medium?
a) coarse textured, high nutrient levels, looseness, and pasteurized
b) fine textured, good water holding capacity and aeration, and sterile
c) high bulk density, good packing abilities, and good water holding capacity
d) silty-loam texture, large pores, moderate fertilization, and free of weed seeds
What is the first stage of seed germination?
a) absorption of water
b) embryo enlargement
c) increased metabolism
d) root and shoot elongation
Which is the optimal temperature range for the germination of most seeds?
a) 30 to 40 degrees Fahrenheit
b) 44 to 59 degrees Fahrenheit
c) 60 to 80 degrees Fahrenheit
d) 86 to 96 degrees Fahrenheit
What is scarification?
a) A seed dormancy mechanism that involves breaking down the seed coat.
b) A seed dormancy mechanism that involves a period of cold temperature.
c) The enzymatic degradation of gibberellins allowing seed germination.
d) The process by which seeds recognize moisture and temperature levels.
Why have plants evolved with seed dormancy mechanisms?
a) Dormancy mechanisms allow the seed to germinate under a wide range of environmental conditions.
b) Dormancy mechanisms increase seedling survival by allowing germination when conditions are favorable
c) Dormancy mechanisms limit the number of seedlings that survive, which is a form of natural selection.
d) Dormancy mechanisms reduce the likelihood that seedlings will compete with the mother plant.
What is a seed dormancy mechanism that prevents the seed of certain plant species from germinating in late fall or early winter?
a) phototropism
b) scarification
c) stratification
d) vernalization
What is the primarily source of food for the developing embryo in the seeds of grass plants?
a) amylose
b) cotyledons
c) endosperm
d) suspensor
Which plant hormone plays the largest role in activating seed germination?
a) abscisic acid
b) auxin
c) gibberellin
d) ethylene
A plant propagator might treat certain seeds with an acid bath before sowing. To which process is this most closely related?
a) acidification
b) scarification
c) stratification
d) vernalization
Why would a horticulturist apply the technique known as indirect seeding?
a) to improve both germination and survival rates
b) to increase the length of the growing season
c) to lessen the amount of growing medium used
d) to reduce the amount of production labor
Why is it a common practice to keep plants being propagated by sexual and asexual means warmer than established plants?
a) Warmth inhibits the growth of fungi.
b) Warmth makes nutrients readily available.
c) Warmth promotes evapotranspiration.
d) Warmth speeds metabolic processes.
Play Games with the Questions above at ReviewGameZone.com
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 54359 in the upper right hand corner or click here.
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 54359 in the upper right hand corner or click here.
TEACHERS / EDUCATORS
Log In | Sign Up / Register
Log In | Sign Up / Register