Responses & Reflexes in Organisms Quiz

Test your knowledge on how organisms respond to stimuli through receptors, coordinators, effectors, and various response mechanisms. Explore topics such as tropism in flower plants and how responses contribute to survival strategies.

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@FortuitousGladiolus8674

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Questions and Answers

What is the term used to describe an organism's movement towards a favorable stimulus?

Positive taxis

In roots, what effect does a high concentration of IAA have on cell elongation?

Inhibits cell elongation

What is the term for an organism's response to move away from an unfavorable stimulus?

Negative taxis

Which response involves an organism changing its speed and direction of movement based on stimuli?

Kinesis Signup and view all the answers

What type of response do bacteria exhibit when moving towards certain chemicals for survival?

Positive chemotaxis Signup and view all the answers

When woodlice must be in damp areas to prevent excessive water loss, what kind of movement response do they exhibit?

Kinesis response Signup and view all the answers

What is the name given to the structures that cause a response in organisms?

Effector Signup and view all the answers

Indoleacetic acid (IAA) is an example of a growth factor that controls which plant response mechanism?

Tropism Signup and view all the answers

Which plant part produces indoleacetic acid (IAA) that causes cell elongation in shoots?

Shoot tip cells Signup and view all the answers

What type of tropism occurs when plants grow towards a stimulus?

Positive tropism Signup and view all the answers

In phototropism, where does indoleacetic acid (IAA) diffuse when there is unilateral light?

Towards the shaded side of the shoot Signup and view all the answers

Why do roots not exhibit phototropism?

Because they anchor the plant and do not need to bend towards light Signup and view all the answers