Hydroponics

15 Questions | By Dabartl1 | Last updated: Mar 22, 2022 | Total Attempts: 1623

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From unit 11, Intro to Plant and Soil Science and Technology, by interstate publishing.

Questions and Answers

1.

Hydroponics gets its name from the two Greek words hydro, meaning water, and ponics, meaning labor.
- A.
  
  False
- B.
  
  True
2.

Common commercial hydroponics crops include:
- A.
  
  Oak trees, tomatoes, peppers, and cotton.
- B.
  
  Tomatoes, peppers, cotton, and pumpkins.
- C.
  
  Tomatoes, peppers, herbs, and cut flowers.
- D.
  
  Tomatoes, peppers, lettuce, and spruce trees.
- E.
  
  Corn, soybeans, alfalfa, and wheat.
3.

Soil can contain dormant weeds and insects. Hydroponics will not reduce the risk for such pests.
- A.
  
  True
- B.
  
  False
4.

Regarding nutrient needs, hydroponics sytems can effectively and rapidly be adjusted by:
- A.
  
  Removing old nutrient solution and replacing water with new solution.
- B.
  
  Adding new nutrients to old solution.
- C.
  
  Adding water to dilute nutrient solution.
- D.
  
  Calling Ghostbusters. They'll fix it.
5.

Which of the following are objections to raising plants hydroponically?
- A.
  
  High initial cost.
- B.
  
  Labor intensive.
- C.
  
  Diseases can spread rapidly throughout a system.
- D.
  
  All of the above choices are correct.
- E.
  
  None of the choices are correct.
6.

Tomatoes and Peppers don't do too well in our greenhouse. Which of the following reasons could contribute to their demise?
- A.
  
  The air temperature seems to hover about 60 degrees.
- B.
  
  The nutrient solutions are often inaccurate.
- C.
  
  There are few insects that readily pollinate flying about in the greenhouse.
- D.
  
  The tank runs dry on weekends.
- E.
  
  All of the choices are potential challenges in our systems.
7.

Rudolph the red-nosed-reindeer's girlfriend was:
- A.
  
  Clarice!!!!
- B.
  
  Wendy
- C.
  
  Vixon
- D.
  
  Hermie
- E.
  
  Yukon Cornelius
8.

Nutrients in hydroponics water are tested in:
- A.
  
  Parts per hundred.
- B.
  
  Parts per thousand.
- C.
  
  Parts per million.
- D.
  
  Parts per trillion.
- E.
  
  Parts per gazillion.
9.

The materials used in aggregate culture for plants to take root in are called______________ and they are basically inert.
- A.
  
  Aggregates
- B.
  
  Substrates
- C.
  
  Rockwools
- D.
  
  Inerts
- E.
  
  Nutrient film technique
10.

Inert means that aggregate materials such as rockwool or perlite do not provide nutrients to the plant.
- A.
  
  False
- B.
  
  True
11.

Light reaching the nutrient solution in hydroponics will likely cause __________ to form.
- A.
  
  Snow crystals
- B.
  
  Penicillin
- C.
  
  Roots
- D.
  
  Algae
- E.
  
  crowds
12.

A water culture system which allows water to spray on the roots, which are suspended in air, is called:
- A.
  
  Nutrient film technique
- B.
  
  Water culture
- C.
  
  Bob
- D.
  
  Aerosmithian culture
- E.
  
  Aeroponics
13.

Hydroponics systems are not yet built on a large, multi-acre scale, producing year-round produce in climate challenged areas.
- A.
  
  True
- B.
  
  False
14.

Hydroponic tomotoes may look good but they may not taste so fresh, because:
- A.
  
  They are picked too soon.
- B.
  
  They are not picked soon enough.
- C.
  
  The tomatoes are supposed to be green and sour, it makes them healthier for you.
- D.
  
  The tomatoes are really potatoes in disguise, but the packager could not spell.
- E.
  
  High school musical four hasn't even been filmed yet.
15.

The ______________ ______ _________________ system is run on a timer. It fills with water, then slowly drains after the water washes across the roots. It then fills again and repeats the cycle.