M22 IB Biology Paper 2 Questions and
Answers Latest Update
Describe the effect of neonicotinoid pesticides on the nervous system of insects. -
Correct Answer They block synaptic transmission
They bind to receptors
State the cumulative increase in the mass of control colonies at 7 weeks. - Correct
Answer 230 grams
Compare and contrast the cumulative increase in mass of three groups of colonies
once they were placed in the field. - Correct Answer All three groups decreased in
cumulative mass gain after 6 weeks
Colonies exposed to high concentration always had the lowest cumulative gain
Suggest a reason for the changes in mass in the colonies between week 6 and 8 -
Correct Answer Less production of honey
Fewer bees
Using the data in the graph, predict how the use of neonicotinoid pesticides will
affect bumblebee populations. - Correct Answer A number of populations will
decrease
Without new queens, new colonies cannot be founded
New colonies are essential to maintain bumblebee populations
Identify the species whose eggs are most affected by a high dose of neonicotinoid. -
Correct Answer B. locorum
Describe the overall effects of low and high doses of neonicotinoid on the egg
lengths of all four species. - Correct Answer Low doses caused a decrease in the
average egg length in 3 species
High doses caused lower average results in all 4 species compared to the control
Deduce, based on the data presented, whether the levels of neonicotinoids used in
agriculture cause direct harm to B. terrestris - Correct Answer Yes, as both doses
affect the overall development of colonies negatively
Yes, as decreased numbers of queens will likely affect their reproductive capabilities
State the main characteristic of stem cells - Correct Answer Undifferentiated
Can differentiate into any type of cells
Answers Latest Update
Describe the effect of neonicotinoid pesticides on the nervous system of insects. -
Correct Answer They block synaptic transmission
They bind to receptors
State the cumulative increase in the mass of control colonies at 7 weeks. - Correct
Answer 230 grams
Compare and contrast the cumulative increase in mass of three groups of colonies
once they were placed in the field. - Correct Answer All three groups decreased in
cumulative mass gain after 6 weeks
Colonies exposed to high concentration always had the lowest cumulative gain
Suggest a reason for the changes in mass in the colonies between week 6 and 8 -
Correct Answer Less production of honey
Fewer bees
Using the data in the graph, predict how the use of neonicotinoid pesticides will
affect bumblebee populations. - Correct Answer A number of populations will
decrease
Without new queens, new colonies cannot be founded
New colonies are essential to maintain bumblebee populations
Identify the species whose eggs are most affected by a high dose of neonicotinoid. -
Correct Answer B. locorum
Describe the overall effects of low and high doses of neonicotinoid on the egg
lengths of all four species. - Correct Answer Low doses caused a decrease in the
average egg length in 3 species
High doses caused lower average results in all 4 species compared to the control
Deduce, based on the data presented, whether the levels of neonicotinoids used in
agriculture cause direct harm to B. terrestris - Correct Answer Yes, as both doses
affect the overall development of colonies negatively
Yes, as decreased numbers of queens will likely affect their reproductive capabilities
State the main characteristic of stem cells - Correct Answer Undifferentiated
Can differentiate into any type of cells
