During the life of a sperm whale there will be many interactions between it and other animals inhabiting the oceans. What type of interaction could occur:

Between an individual of sperm whale and others of its species?

Important Questions on Interaction

MEDIUM

MYP:4-5

IMPORTANT

MYP Biology A concept based approach Years 4&5>Chapter 6 - Interaction>Summative assessment>Q 2

Explain possible advantages to sperm whales of living in groups.

HARD

MYP:4-5

IMPORTANT

MYP Biology A concept based approach Years 4&5>Chapter 6 - Interaction>Summative assessment>Q 3

Females currently produce calves at the interval of between 4 and 20 years. In the past sperm whales were hunted and killed by humans, and the females gave birth to young more frequently. What is the explanation for a drop in pregnancy rate since the end of the whale hunting?

HARD

MYP:4-5

IMPORTANT

MYP Biology A concept based approach Years 4&5>Chapter 6 - Interaction>Summative assessment>Q 4

What factors could explain the large brain size of sperm whale?

MEDIUM

MYP:4-5

IMPORTANT

MYP Biology A concept based approach Years 4&5>Chapter 6 - Interaction>Summative assessment>Q 5

Explain reasons for a slower heart rate during a long dive.

HARD

MYP:4-5

IMPORTANT

MYP Biology A concept based approach Years 4&5>Chapter 6 - Interaction>Summative assessment>Q 6

Humans are mammals so we might have a diving reflex. One hypothesis that could be tested is: "Heart rate slows down in humans when the face is immersed in cold water".

Explain the reasons for excepting human heart rate to slow down if the face is immersed in cold water.

HARD

MYP:4-5

IMPORTANT

MYP Biology A concept based approach Years 4&5>Chapter 6 - Interaction>Summative assessment>Q 7

Design an experiment to test the hypothesis which states “Heart rate slows down in humans when the face is immersed in cold water." Include all the details of how variable will be in controlled. Your method should exclude the possibility that are slowing of the heart rate is due to the stopping breathing rather than contact with cold water.

MEDIUM

MYP:4-5

IMPORTANT

MYP Biology A concept based approach Years 4&5>Chapter 6 - Interaction>Summative assessment>Q 8

Non-apneic facial immersion experiment was performed to test the hypothesis which states that “Heart rate slows down in humans when the face is immersed in cold water." Explain how this experiment can be ensured to be safe and ethically acceptable.

MEDIUM

MYP:4-5

IMPORTANT

MYP Biology A concept based approach Years 4&5>Chapter 6 - Interaction>Summative assessment>Q 9

Explain the problems for the scientists in measuring the ages of narwhals.