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Download Leaving Certificate Biology Photosynthesis Quiz
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Leaving Certificate Biology Plant Responses 1 iQuiz FIRST In PowerPoint 2007 if you see a Security Warning click HERE on Options… and then click on Enable this content SECOND Press the F5 Key to Begin, Then click on this Blue Box Any change in the environment (internal or external) that causes a cell or organism to respond is called a … Impetus Pollutant Variation Stimulus The growth response of part of a plant to an external unidirectional stimulus is a … Tropism Stimulus Auxin IAA A plant’s response to touch is known as … Hydrotropism Thigmotropism Phototropism Geotropism The growth response of part of a plant away from an external unidirectional stimulus is a … Geotropism Negative tropism Positive tropism Hydrotropism What part of the plant produces plant growth regulators? Petioles Axillary buds Apical bud Meristems A plant stem will grow upwards in the dark. What type of tropism is this? Positive phototropism Negative phototropism Negative geotropism Positive geotropism The growth response of a plant to light is called … Geotropism Phototropism Hydrotropism Chemotropism A term for a chemical that is a plant growth regulator or a plant growth hormone (e.g. IAA), produced in the meristematic tissue of shoots, roots, young leaves and developing seeds. Auxin Hormone Gibberellin Cytokinin Tendrils of the sweet pea plant wrap themselves around wire, stakes and itself. This is an example of … Reflex action Thigmotropism Habit Conditioning Plant growth hormones, which increase the rate of cell division and inhibit aging of green tissues in plants are … Gibberellins Selective weed killers Cytokinins Coleoptiles The response of roots to fertilisers in the soil is an example of … Thigmotropism Phototropism Geotropism Chemotropism The suppression of the growth of the lateral buds by the terminal bud, thus allowing the stem to elongate is known as … Tropic response Abscission Apical dominance Negative tropism A plant growth substance (auxin) that stimulates cell elongation is … Cytokinin IAA Ethene or ethylene Selective weed killer A plant growth promoter which stimulates cell elongation and germination is a … Cytokinins Gibberellins Selective weed killer Coleoptiles Name a plant growth substance used to promote ripening of some fruits, degreens others and promotes abscission and inhibits longitudinal growth. Tropism IAA Selective weed killer Ethene or ethylene Plant Responses 1 iQuiz How did you do? Click this Blue Box to find out
