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WorksheetsBiology Quiz on Populations and Energy
Total questions: 19
Worksheet time: 15mins
What is the population of wolves at Week 5?
80
100
120
150
What might happen to the wolf population in Week 6?
The wolf population will increase as deer recover.
The wolf population will decrease due to fewer deer.
The wolf population will remain the same.
The wolf population will drop to zero.
There are 50 rabbits in a population at the start of the year. Assume that the growth rate of the population is 15% per year. One year later, how many rabbits are most likely to be in the population?
55
57.5
60
75
There are 80 deer in a population at the start of the year. Assume that the death rate of the population is 20% per year. One year later, how many deer are most likely to be in the population?
60
64
70
80
In this food chain, explain why the Sun the main source of energy in the food chain.
From 1st trophic level (producer) to the 2nd to 4th tropic levels (consumers), discuss the energy changes from one trophic level to another.
State the name of the physics principle used to account for this energy changes.
Energy Dissipation
Energy Creation
Energy Disappearance
Conservation of Energy
What condition do you think Patient X is suffering from? With reference to the graph, give a reason for your answer.
diabetes
asthma
State the nutrient that gives simple sugars as end products after digestion.
Carbohydrates
Proteins
Lipids
What is the class of enzyme that helps with the digestion process?
Lipases
Proteases
Carbohydrases
Identify the organ removed from Patient Y.
Mouth
Stomach
Small intestine
In a closed terrarium, plants continue to grow without outside interference. What is the primary reason for this?
The soil replenishes itself with nutrients.
The water cycle and photosynthesis occur within the terrarium.
Heat from the terrarium walls accelerates growth.
Plants do not require oxygen in a closed system.
A farmer wants to grow crops in an area with poor soil. Which of the following methods would most likely improve the soil quality?
Adding synthetic fertilizers only.
Planting cover crops like clover or alfalfa.
Increasing the watering frequency.
Using pesticides to remove harmful insects.
During a power outage, someone lights a candle for light. What is the primary chemical reaction occurring in the candle flame?
Combustion of wax to produce carbon dioxide and water.
Evaporation of wax to produce light.
Condensation of wax vapor to release heat.
Decomposition of wax to produce oxygen and heat.
A student wants to test the effect of different types of fertilizers on the growth of plants. She plans to grow four plants in identical conditions but use a different fertilizer for each plant. What is the dependent variable in this experiment?
Type of fertilizer.
Amount of sunlight.
Growth of the plants.
Type of plant used.
A public health report shows that regions with more access to clean water have lower rates of waterborne diseases. What conclusion can be drawn from this data?
Clean water directly prevents all diseases.
Clean water reduces the spread of waterborne diseases.
Waterborne diseases are not affected by water quality.
More water sources lead to healthier populations.
A student conducts an experiment to study how light intensity affects the rate of photosynthesis in plants. She uses a lamp to shine light on a plant and measures the amount of oxygen released. What would the student likely observe if the light intensity increases?
The rate of oxygen release decreases.
The rate of oxygen release increases.
The plant stops photosynthesizing.
The rate of oxygen release stays the same.
A student investigates how light intensity affects the rate of photosynthesis in an aquatic plant. The setup includes a lamp, the plant in a beaker, and a device to measure oxygen production. Which variable must the student keep constant to ensure a fair test?
The type of plant.
The distance between the lamp and the plant.
The intensity of light.
The temperature of the water.
A species of bacteria doubles in population every 20 minutes under optimal conditions. If there are 500 bacteria at the start, how many will there be after 1 hour?
1000
2000
4000
8000
