IB Biology D - Continuity and Change Questionbank

X: 0.40 mol dm⁻³; Y: hypotonic

X: 0.225 mol dm⁻³; Y: hypertonic

X: 0.40 mol dm⁻³; Y: isotonic

X: 0.225 mol dm⁻³; Y: hypotonic

Grow their first offspring in identical conditions, then compare recovery after identical drought.

Select equally sized seeds from both mothers, then compare seedling recovery after identical drought.

Raise both lineages for two watered generations, then compare recovery after each reaches equal wilting.

Raise both lineages for two watered generations, then compare recovery after identical drought.

0.30 mol dm⁻³; mass loss

0.40 mol dm⁻³; no mass change

About 0.33 mol dm⁻³; mass gain

About 0.33 mol dm⁻³; mass loss

Producing two identical nuclei

Producing haploid nuclei for sexual reproduction

Replicating chloroplast DNA

Allowing asexual reproduction in prokaryotes

P promotes skin vasodilation; Q promotes sweating.

P promotes sweating; Q promotes skin vasodilation.

Both pathways promote skin vasoconstriction during heating.

Both pathways inhibit skin blood flow and sweating.