Photosynthesis and Tropisms

Vine grow straight along the ground until they find something to grow around like a mailbox. What made the vine stop growing straight and start wrapping around the mailbox?

• negative thigmotropism

• negative geotropism

• positive geotropism

• positive thigmotropism

Tags

NGSS.MS-LS1-5

Which letter on the diagram represents the external stimulus?

• W

• X

• Y

• Z

The diagram shows a plant growing near a window. How can the plant's reaction best be described?

• as condensation

• as transpiration

• as dormancy

• as tropism

Movement toward a stimulus

• hydrotropism

• positive tropism

• dormancy

• stimulus

A plant's response to touch

• thigmotropism

• geotropism

• hydrotropism

• dormancy

The movement of a plant's roots toward water in the soil

• thigmotropism

• geotropism

• phototropism

• hydrotropism

Tags

NGSS.MS-LS2-1

Why does a plant stem grow upward away from the soil?

• positive geotropism

• positive thigmotropism

• negative geotropism

• negative hydrotropism

When a seed germinates, why do roots grow downward toward the ground?

• positive thigmotropism

• negative hydrotropism

• positive geotropism

• negative phototropism

The diagram shows a plant growing while lying on its side. How is the plant reacting positively and negatively to gravity?

• the root are reacting negatively by growing downward while the stem and leaves are reacting positively by growing upward

• the root are reacting positively by growing downward while the stem and leaves are reacting negatively by growing upward

• only the roots are reacting by growing downward

• only the leaves and stem are reacting by growing upward

Tags

NGSS.MS-LS1-5

Plant's response to a stimulus

• Photosynthesis

• Turgor Pressure

• Tropism

• Xylem