WorksheetsHydroponics PRE-ASSESSMENT
Total questions: 27
Worksheet time: 14mins
Name
Class
Date
1.
What is hydroponics?
a)
Growing plants in soil
b)
Growing plants in water only
c)
Growing plants in a liquid nutrient solution with or without artificial media
d)
Growing plants in sand
2.
Which of the following is NOT a commonly used medium in hydroponics?
a)
Expanded clay
b)
Coir
c)
Perlite
d)
Topsoil
3.
Who first used the term 'hydroponics' and when?
a)
Dr. Gericke in 1929
b)
U.S. Army in World War II
c)
Commercial farms in the 1950s
d)
Greek philosophers in ancient times
4.
Which is NOT listed as an advantage of hydroponics?
a)
Faster plant growth
b)
Higher crop yields
c)
Lower initial costs
d)
No weeding required
5.
What is a disadvantage of hydroponics?
a)
Slower plant growth
b)
Lower crop yields
c)
Higher initial and operational costs
d)
More weeding required
6.
Which of these is NOT a type of liquid hydroponic system mentioned?
a)
Nutrient film technique (NFT)
b)
Deep water culture
c)
Aeroponics
d)
Soil-based hydroponics
7.
What material is rockwool made from?
a)
Recycled plastic
b)
Ground-up basalt rock
c)
Coconut fiber
d)
Shredded wood
8.
In a passive hydroponic system, how is water drawn to the plant roots?
a)
Through a pump
b)
By capillary action
c)
By gravity
d)
Through pressurized mist
9.
Which hydroponic system is described as the simplest of all active systems?
a)
Wick System
b)
Water Culture System
c)
Ebb and Flow System
d)
Drip System
10.
In the Ebb and Flow System, what controls the flooding and draining of the grow tray?
a)
A manual valve
b)
Gravity
c)
A timer
d)
Plant roots
11.
What is the recommended pH range for hydroponic culture?
a)
3.0 to 4.0
b)
4.0 to 5.0
c)
5.0 to 6.0
d)
6.0 to 7.0
12.
What is the normal concentration range for nitrogen in most nutrient solutions?
a)
30 to 50 mg/L
b)
70 to 150 mg/L
c)
100 to 200 mg/L
d)
200 to 300 mg/L
13.
Which micronutrient has the highest concentration range in nutrient solutions?
a)
Boron
b)
Copper
c)
Iron
d)
Zinc
14.
What is the main difference between soil-grown and hydroponically-grown plants in terms of physiology?
a)
Hydroponically-grown plants are physiologically different
b)
Soil-grown plants absorb nutrients faster
c)
There is no physiological difference
d)
Hydroponically-grown plants have different root structures
15.
In soil, how do plants absorb nutrients?
a)
Directly from organic matter
b)
From inorganic elements in soil solution
c)
Through leaves
d)
By breaking down rocks
16.
What evidence exists regarding the nutritional value of hydroponically grown produce compared to soil-grown produce?
a)
Hydroponic produce is always more nutritious
b)
Soil-grown produce is always more nutritious
c)
There is no conclusive evidence of a difference
d)
Nutritional value depends on the specific crop
17.
What factor is more likely to remain consistent in hydroponic systems compared to other growing methods?
a)
Plant size
b)
Growth rate
c)
Produce quality
d)
Nutrient content
18.
For short-term crops like lettuce, what is a common choice of hydroponic system?
a)
Wick system
b)
Deep water culture
c)
Recirculating NFT or flood and drain gravel channels
d)
Aeroponic system
19.
What is a key reason for the increased demand for hydroponically grown produce?
a)
Ban on methyl bromide in soil culture
b)
Lower initial costs
c)
Easier pest control
d)
Higher nutritional value
20.
Which of the following is a challenge associated with closed hydroponic systems?
a)
Higher water usage
b)
Difficulty in nutrient management
c)
Increased soil-related pests
d)
Limited crop variety
21.
How does the Aeroponic System differ from other hydroponic systems?
a)
It uses soil as a medium
b)
It requires a short cycle timer
c)
It does not recycle nutrient solutions
d)
It is the least expensive system
22.
Why might hydroponic systems be beneficial in desert regions?
a)
They require no water
b)
They use desert sand as a growing medium
c)
They can use seawater directly
d)
They are unaffected by temperature
23.
How might hydroponics potentially help address food security issues in areas with poor soil conditions?
a)
By requiring less water than traditional farming
b)
By allowing crops to be grown in desert or arid regions
c)
By eliminating the need for pesticides
d)
By producing higher yields in a shorter time
24.
What potential challenge might a hydroponic farmer face when using a closed system for nutrient management?
a)
Higher initial setup costs
b)
Difficulty in maintaining proper nutrient balance
c)
Increased risk of power outages affecting the system
d)
Limited variety of crops that can be grown
25.
Why might the Aeroponic System be considered the most high-tech type of hydroponic gardening?
a)
It uses advanced LED lighting
b)
It requires precise nutrient mixing
c)
It needs a short cycle timer for nutrient delivery
d)
It automatically harvests crops
26.
How does the nutrient uptake process differ between soil-grown and hydroponically-grown plants?
a)
Hydroponic plants absorb nutrients faster
b)
Soil-grown plants require more nutrients
c)
There is no physiological difference in nutrient uptake
d)
Hydroponic plants can only absorb certain nutrients
27.
What factor might make hydroponics more environmentally friendly compared to traditional farming?
a)
Lower energy consumption
b)
Reduced water usage and nutrient recycling
c)
Elimination of all pesticides
d)
Zero carbon footprint
100 %
