Ib Biology Perception of Stimuli

What type of phototropism is shown in the picture

• hydrotropism

• gravitropism

• phototropism

• thigmotropism

What type of tropism is shown in the picture

• thigmotropism

• phototropism

• hydrotropism

• gravitropism

An animal is cold so it moves into the sun. What is the underline phrase?

• stimulus

• response

Tags

NGSS.MS-LS1-8

Getting a drink when you are thirsty. What is the underline phrase?

• stimulus

• response

It is a very hot, sunny day so a dog sits in the shade.

• external stimulus

• internal stimulus

Tags

NGSS.MS-LS1-8

Geotropism is a force that affects certain organisms.  Which of the following is an example of a plant responding to the external stimulus of gravity?

• A seedling growing towards a sunny window.
• Plant roots growing down into the soil.
• Flowers producing nectar to attract bees.
• A potted plant wilting when it dries out.

Which of the following is an example of the effects of geotropism?

• Monarch butterflies migrate from Canada to Mexico each year.
• A hippopotamus submerges itself in water until the Sun goes down.
• A wilted flower returns to an upright position after being watered.
• A potted plant falls on its side, but it roots still grow downward.

The skin helps regulate body temperature. When your body becomes too warm you...

• Sweat
• Blink
• Shiver
• Yawn

To ensure their survival animals must respond to each of the following internal cues EXCEPT

• hunger
• affection
• thirst
• sleep

When a lion hunts, it is responding to what stimulus?

• thirst
• heat
• sleep
• hunger