A - Unity and Diversity Questionbank

They have identical DNA sequences

They share similar observable traits and structure

They live in the same geographical area

They can interbreed and produce fertile offspring

Two plants can be easily distinguished by leaf shape

Fossilized organisms cannot be tested for reproductive compatibility

Two dogs produce fertile puppies

Asexual bacteria exhibit high mutation rates

Increased water vapor in air spaces

Capillary movement of water in plant cell walls

Blockage of transpiration in xylem

Loss of cohesion during evaporation

Populations must first evolve new organs

Gene flow always increases during divergence

Speciation is often gradual, with no clear boundary between species

Species definitions are constant across all biological disciplines

Increased groundwater recharge

Reduction in native bird populations

Loss of breeding sites for amphibians

Lower water quality due to runoff

New Zealand forest

Caribbean coastline

Ganges wetlands

All three regions show equivalent habitat loss and thus face similar extinction risk

Improved biodiversity due to greater land use

Soil enrichment and nutrient cycling

Loss of endemic species and habitat fragmentation

Reduction in carbon dioxide levels

All variation is purely genetic

Phenotypic traits can be influenced by the environment

Variation is irrelevant in unicellular organisms

Genetic recombination drives all phenotypic change

These components are required for multicellular communication

They evolved separately in eukaryotes and prokaryotes

They are essential features passed on from a universal common ancestor

Their structural simplicity makes them more adaptable

The use of polarized light to detect protein shape

Antibodies that bind selectively to target molecules

The ability to image cells in a frozen, hydrated state

The alignment of microtubules with fluorescent markers