A-Level Biology Specification

AQA 7402

Section 6.1.1: Survival and response

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#6.1.1.1

Organisms increase their chance of survival by responding to changes in their environment.

#6.1.1.2

In flowering plants, specific growth factors move from growing regions to other tissues, where they regulate growth in response to directional stimuli.

#6.1.1.3

The effect of different concentrations of indoleacetic acid (IAA) on cell elongation in the roots and shoots of flowering plants as an explanation of gravitropism and phototropism in flowering plants.

#6.1.1.4

Taxes and kineses as simple responses that can maintain a mobile organism in a favourable environment.

#6.1.1.5

The protective effect of a simple reflex, exemplified by a three-neurone simple reflex. Details of spinal cord and dorsal and ventral roots are not required.

#6.1.1.10

Required practical 10

Investigation into the effect of an environmental variable on the movement of an animal using either a choice chamber or a maze.