Plant Responses

1. stress negative impact of non-living factors on the plants
2. bitter tasting compounds found in plant leaves that may affect metabolism of animals or insects eating them or poison them
3. causes fruit ripening, promotes abscission in deciduous trees
6. the growth response of plants to gravity
7. the growth response of plants to unilateral light
9. Plant hormone that stem elongation, trigger the mobilisation of food stores in a seed at germination and stimulate pollen tube growth in fertilisation
10. chemicals found in plant leaves that may act as toxins to insects or fungi attacking the leaves
11. Pudica a plant that responds to touch

1. the fall of leaves
4. bitter tasting chemicals produced to prevent animals eating plant leaves; toxic to many insects
5. plants are sensitive to a lack of light in their environment
8. acid maintains dormancy of seeds and buds, stimulates cold protective responses, for example, antifreeze production, stimulate stomatal closing
12. Plant hormone that controls cell elongation, prevent leaf fall, maintain apical dominance, produce tropic responses, and stimulate the use of ethene in fruit ripening.