Plant H2o & Nutrition
Which process is critical to maintaining cell turgidity?
A. cohesion C. osmosis
B. Diffusion D. transpiration
C. osmosis
What is the purpose of the entire flower?
a. to absorb water and mineral nutrients
b. to capture light for the production of food
c. to enable a plant to reproduce sexually
d. to support other parts of a plant
c. to enable a plant to reproduce sexually
Which property of growing media has the greatest influence on aeration and water drainage?
a. cation exchange capacity
b. pH
c. porosity
d. uniformity
c. porosity
Which is the best method of plant identification in terms of accuracy?
a. comparison
b. expert determination
c. recognition
d. taxonomic keys
b. expert determination
What is the top, visible layer of earth in which vegetation grows?
a. dirt
b. minerals
c. ore
d. soil
d. soil
Which plant characteristic would likely result in the highest rate of transpiration?
A. leaves covered with trichomes
B. leaves with a large surface area
C. leaves with fewer stomata
D. leaves with a thick cuticle layer
B. leaves with a large surface area
What term describes a flower with male parts and no female parts?
a. complete c. pistillate
b. perfect d. staminate
d. staminate
Which is an organic soilless mix component?
a. bark
b. calcined clay
c. perlite
d. rock wool
a. bark
What is the stable organic matter in soil formed from plant leaves, roots, and stems?
a. coir
b. humus
c. loam
d. silt
b. humus
What is the ability of a substrate to effectively retain water for root absorption?
a. cation exchange capacity
b. leaching
c. porosity
d. water holding capacity
d. water holding capacity
How many essential elements on which plant growth is dependent are there?
a. 6
b. 13
c. 16
d. 18
c. 16
What is the female part of a flower, composed o the stigma, the style, and the ovary?
a. carpel
b. macrospore
c. receptacle
d. stamen
a. carpel
What is the path of a pollen grain from pollination to fertilization?
a. anther, filament, ovule
b. carpel, tepal, calyx
c. sepal, petal, pistil
d. stigma, style, ovary
d. stigma, style, ovary
What would be the best method for identifying a tree if leaves and twigs are out of clear view?
a. bark characteristics
b. flower parts
c. leaf apexes
d. rooting habit
A. bark characteristics
What are 4 things growing medium provides for plants?
a. darkness, food, nutrients, oxygen
b. carbon dioxide, disease resistance, sugars, water
c. excellent drainage and small pore space
d. increased fertility and higher bulk density
d. increased fertility and a higher bulk density
Calcium nitrate with an analysis of 15-0-0 is considered to be ____________ fertilizer
a. complete
b. perfect
c. an imperfect
d. an incomplete
d. an incomplete
Which plant group initiates flower development as the nights grow longer?
a. day-neutral
b. long-day
c. prevernal
d. short-day
d. short-day
Which is a synthetic material that is not environmentally friendly?
a. coir
b. plastic foam
c. rock wool
d. vermiculite
b. plastic foam
How does a dichotomous key work?
a. it eliminates non-native species
b. it is based on how the plant is being used
c. it leads the user through a series of choices
d. it provides the user with multiple pictures
c. it leads the user through a series of choices
What is soilless medium?
a. a growing material consisting of mineral matter
b. a liquid medium in which plant roots grow
c. a solid substrate other than soil
d. the decayed remains of plants and animals
c. a solid substrate other than soil
How are manganese, molybdenum and zinc classified?
a. micronutrients
b. non-fertilizer nutrients
c. primary macronutrients
d. secondary macronutrients
a. micronutrients
Which is a light-sensitive pigments that governs different physiological responses?
a. carotenoid
b. chlorophyll
c. phytochrome
d. xanthophyll
c. phytochrome
How do earthworms, ants, crawfish, moles, and other organisms impact soil?
a. they break down mineral matter
b. they establish symbiotic relationships with plants
c. they improve the soil tilth
d. they introduce essential nutrients
c. they improve soil tilth
What accounts for about 45 percent of a typical soil?
a. air
b. mineral matter
c. organic matter
d. water
b. mineral matter
What is the ratio of the mass of dry solids in relation to the volume of the medium?
a. bulk density
b. cation exchange policy
c. porosity
d. water holding capacity
a. bulk density