Sustainability and Interdependence: SQA Higher Biology Area 3 quiz quiz

Oxygen released from water and carbon dioxide from the air

Glucose made in the cycle and water from the surroundings

ATP and hydrogen carried by NADP

RuBP regenerated in the cycle and the enzyme RuBisCO

Crops always contain far more protein per kilogram than any farmed livestock ever could

Livestock simply cannot be farmed sustainably on any kind of land at all, whatever the conditions

Photosynthesis only ever occurs in farmed animals and never in the crop plants themselves

Energy is lost between trophic levels, so feeding people directly on plants wastes less energy

A reduction in vigour and fertility as harmful recessive alleles become homozygous and are expressed

The improved vigour and the increased crop yield that is often seen in the healthy F1 hybrid offspring

The complete loss of all genetic variation in a population within a single generation

The deliberate transfer of a useful gene from one organism into a crop plant

A single plot with no replicates and no control of the variables

Control of variables, replicates and randomisation of treatments

Using only the new variety on its own with no comparison made at all

Choosing the best-looking plants by eye and ignoring the rest

It kills every plant in the field including the crop

It spreads through the soil to fertilise the crop

It kills the weeds while leaving the crop unharmed

It attracts a natural predator of the weeds

Spraying a systemic chemical pesticide across the whole of the growing crop

Ploughing the field repeatedly to disturb the pest and bury its eggs

Breeding a brand new crop variety that grows much faster than the pest can spread

Using a natural predator, parasite or pathogen of the pest to reduce its numbers

Stereotypy, a repetitive and purposeless behaviour

Normal feeding and grooming behaviour shown each day

Successful breeding and the careful care of the young

Activity levels that are typical and normal for the species

Both the parasite and the host benefit equally from the relationship

The parasite benefits while the host is harmed

Neither species benefits at all from the relationship

Only the host benefits, while the parasite is harmed

Altruism is never favoured by natural selection under any circumstances at all in any population

Altruism only ever benefits completely unrelated individuals and never the donor's own relatives

Helping a relative survive passes on shared genes, so the behaviour can be favoured by selection

Helping a relative to survive actually reduces the donor's shared genes within the population

Because species richness and species diversity always mean exactly the same thing as each other

Because the community happens to contain no genetic diversity within any of its species at all

Because the community contains far too many separate ecosystems all overlapping in one place

Because one species dominates and the others are rare, giving uneven relative abundance