Investigating Plant Systems and Homeostasis

How do plants respond to gravity?

• The roots and stem both

  grow downward.

• The roots and stem both

  grow upward.

• The roots grow downward and

  the stem grows upward.

• The roots grow upward and the

  stem grows downward.

What is the vascular tissue that transports water up the plant?

• Xylem

• Phloem

• Roots

• Shoot

Tags

NGSS.MS-LS2-3

What vascular tissue carries organic nutrients "sugar" throughout the plant?

• Xylem

• Phloem

• Cones

• Leafs

Tags

NGSS.MS-LS2-3

___________________________ is growth that happens in organisms in response to light, such as a stem bending toward a light source.

• transpiration

• gravitropism

• phototropism

An organisms respond to light as a stimulus is ___________________

• thermotropism

• sonotropism

• phototropism

Plant’s roots grow down, anchoring it into the soil. To what stimulus is the plant responding?

• thigmotropism

• hydrotropism

• phototropism

• gravitropism

On a leaf surface, guard cells that open and close in response to the amount of water available to keep everything balanced is an example of what?

• phototropism

• homeostasis

• respiration

• constructive feedback

What is turgor pressure and what happens without it?

• pressure exerted by water inside the cell pushing against the cell wall

• pressure of the outside of the cell wall

• no pressure at all

• pressure exerted by gravity

Leaves and stems growing towards the sunlight exhibits what kind of tropism?

• geotropism

• phototropism

• gravitropism

• autotropism

How is the turgor pressure force exerted on the inside of a seed to split it open so it can emerge into a seedling?

• Water within the seed pushes out against the seed coat

• Gravity pushes up on the seed coat

• Gravity pulls down on the seed coat

• Water from the soil pushes in through the seed coat