What Is Stimulus In Biology Class 10

Stress either physiological biological or psychological is an organism s response to a stressor such as an environmental condition.

What is stimulus in biology class 10. About how does control and coordination take place and why it s important what is a stimulus and response to it factors involved types of stimuli reaction to stimuli please visit the. The human body is a complex machine that performs various functions to keep the body in a stable position. Receptors of sense organs respond to the stimulus and send impulses to central nervous system through sensory neurons.

Hydrotropism in hydrotropism stimulus is water. What is the general name of chemical substances which bring about control and coordination in plants. Roots of plants grow downward towards gravity whereas shoots grow upward against gravity.

Lakhmir singh manjit kaur biology for class 10 science chapter 7 control and coordination. Stimuli that alter an organism s environment are responded to by multiple systems in the body. Geotropism here the stimulus is gravity.

Roots always grow towards water. The ability to respond to a stimulus is called irritability and is a necessary condition for life. Lakhmir singh biology class 10 solutions page no 92.

Sensory nerves send messages from the sense organs to the brain or spinal cord. An example of a stimulus is an individual placing a hand on a hot surface. Stimulus is a change in the environment that excites the organism to respond to it.

In humans and most mammals the autonomic. Chemotropism the movement in response to chemical stimulus is called as chemotropism. Growth of pollen tubes towards ovules where ovules produce chemicals for the growth and passage of pollen tubes.