Question

1.            List three potential sources of soil salinity. How can soil salinity be remedied in fields?

2.            Based on growing degree day accumulation, which crop will be ready to harvest at the earliest date if both crops were planted on the same day?

A.            the crop with a base growth temperature of 60°F

B.            the crop with a base growth temperature of 40°F.

C.            base growth temperatures do not impact the rate at which crops reach harvest maturity

3.            What at the benefits of no-till production?

4.            Which of the following would contain nodes?

A.            stem

B.            rhizome

C.            crown

D.            all of the above

5.            Which of the following are functions of stems:

A.            contain the vascular system

B.            plant propagation

C.            supports and displays leaves

D.            a and c

E.            all of the above

6.            Through which cell does water loss and gas exchange into and out of the leaf occurs through?

7.            ________ plants continue to grow vegetatively after flowering is initiated.

A.            Monocots

B.            Determinate

C.            Indeterminate

D.            None of the above

8.            What does the USDA plant hardiness map tell you?

9.            All grasses and most monocots display which type of emergence:

A.            epigeal

B.            hypogeal

C.            neither

10.          Which type of plant dies after reproduction?

A.            annual

B.            biennial

C.            perennial

D.            both a and b

E.            all of the above

11.          Tomatoes, peppers, and eggplant are all members of what vegetable group:

A.            Cucurbit crops

B.            Root/tuber crops

C.            Solanaceae crops

D.            Brassica crops

12.          Be able to define the terms photosynthesis (inputs and outputs), respiration (inputs and outputs), light compensation point (and its relationship between photosynthesis and respiration), and net assimilation rate.

13.          What are some factors that influence the ability of a plant to extract water from the soil?

14.          Describe the germination process of a seed, specifically what elements are needed for a seed to germinate and why.

Answer 1

1) potential sources of soil salinity - minerals in the parent rock, sea water, irrigation water.

Remedies : drain with clear irrigation water, application of compost or activated charcoal.

2)c. Base growth temperatures donot affect the rate its the temperature conditions at the time of growth that shall dictate the rate of growth of a plant.

3) advantages of no - tillage are :

Reduced soil erosion, reduced soil compaction, cost and fuel efficient, less moisture loss and better quality of soil.

4) d. All of the above.

Leaves have nodes which are site of lateral branching; rhizomes of specialized plants that develops shoots and roots at their nodes and crown of a plant is its upper part which states above the ground and hence includes stems which have nodes.