altered development and life cycles- lqc 17a

Question 1

which environmental factor is most likely to effect animal species

Answer 1

temperature, acts as a cue or trigger for their development or behaviour

Question 2

what is the other environmental cue for some species

Answer 2

photoperiod

Question 3

what cue do some plants use

Answer 3

rainfall

Question 4

why do animals and plants need to be synchronised with each other

Answer 4

the hatching of eggs or emergence of adults (after hibernation) is synchronised with periods of maximum food availability, a mismatch can result in seriously reduced survival rate

Question 5

how is phenology used to provide evidence for climate change

Answer 5

the timing of developmental events are used as biological indicators, many long term records exist, many data sets from different species and locations are needed, they are compared and tested statistically to improve validity