Energy Needs and Hunting Strategies

What is the term for the amount of energy an organism needs each day to survive?

• Net energy requirement

• Gross energy intake

• Basal metabolic rate

• Energy cost of hunting

If an animal expends 500 kcal hunting and consumes prey providing 1200 kcal, what is its net energy gain?

• 500 kcal

• 700 kcal

• 1200 kcal

• 1700 kcal

Which equation best represents the calculation for net energy after hunting?

• Net energy = Energy consumed + Energy expended

• Net energy = Energy consumed - Energy expended

• Net energy = Energy expended - Energy consumed

• Net energy = Energy consumed × Energy expended

Tags

CCSS.6.EE.B.6

An animal needs 800 kcal per day to survive. After hunting, it has a net energy of 600 kcal. What is the outcome?

• The animal survives

• The animal does not survive

• The animal gains weight

• The animal hibernates

Why might a predator choose to hunt prey species A over species B?

• Species A is easier to catch and provides more net energy

• Species B is more dangerous

• Species A is smaller

• Species B is less nutritious

If a predator hunts two rabbits (each providing 300 kcal) and expends 400 kcal in total, what is the net energy gain?

• 200 kcal

• 400 kcal

• 600 kcal

• 900 kcal

Which of the following is NOT a factor in determining if an animal has enough calories to survive?

• Energy cost of hunting

• Calories obtained from prey

• The animal's color

• The animal's daily energy requirement

A predator expends 1000 kcal hunting and catches prey worth 900 kcal. What is the net energy?

• 100 kcal

• -100 kcal

• 900 kcal

• 1900 kcal

If a predator's net energy after hunting is zero, what does this mean?

• The predator has surplus energy

• The predator has just enough energy to survive

• The predator has not met its energy needs

• The predator will gain weight

Which of the following would most likely influence a predator’s choice of prey according to a data table?

• Prey abundance and energy content

• Prey color

• Prey sleeping habits

• Prey vocalizations