ANIMAL BEHAVIOR
INTRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An organism’s negative or positive response to a chemical
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The negative charge a plant gets in response to light
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An organisms positive response to a liquid
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A type of toxic chemical
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Detailed explanation-1: -In chemotaxis, the direction of cellular locomotion is determined by a gradient of substances in the environment. The movement of cells toward a higher concentration of a stimulating substance is defined as positive chemotaxis (attractant), while the movement away is defined as negative chemotaxis (repellent).
Detailed explanation-2: -Definition: The directed movement of a motile cell or organism towards a lower concentration of a chemical.
Detailed explanation-3: -Chemotaxis (from chemo-+ taxis) is the movement of an organism or entity in response to a chemical stimulus. Somatic cells, bacteria, and other single-cell or multicellular organisms direct their movements according to certain chemicals in their environment.
Detailed explanation-4: -1.7 Chemotaxis. Chemotaxis is the movement of organisms in response to a nutrient source or chemical gradient. Cells with chemotatic capabilities can sense xenobiotic chemicals adsorbed to soil particles and swim toward them, thereby overcoming the mass-transfer limitations in the bioremediation process (Fig. 28.6).
Detailed explanation-5: -Chemotaxis is defined as cell movement toward a gradient of increasing chemical concentration (Lauffenburger and Zigmond, 1981).