Plant Systems

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

Tags

NGSS.MS-LS1-2

NGSS.MS-LS2-1

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

What are xylem?

• series of tubes that carry water from roots to the leaves

• series of tubes that carry water from leaves to the atmosphere

• series of tubes called roots

• series of tubes call leaves

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

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

• geotropism

• phototropism

• gravitropism

• autotropism

Positive ​ (a)   is a response were plants move and ​ (b)   an object the plant comes into physical ​ (c)   with. This response of the ​ (d)   benefits the plant by allowing the plant to reach more sunlight for ​ (e)   .

• thigmotropism

• grow toward

• contact

• shoot system

• photosynthesis

These plants transport food and water through the xylem and phloem.

• vascular

• nonvascular

Students set up a controlled experiment by growing the same type of seedlings in two different locations.

What caused the shoots of the seedlings to bend toward the window?

• Hormones produced in response to a light stimulus

• Sugars produced in response to a gravity stimulus

• Carbon dioxide produced in response to a water stimulus

• Water produced in response to a nitrogen stimulus

Tags

NGSS.MS-LS1-5

What are the xylem and the phloem of a plant are examples of?

• organs

• tissues

• cells

• molecules

Tags

NGSS.MS-LS2-3

Which hormone match the description?

" Growth hormones that stimulate rapid increase in size; and play a role in germination, flowering, and fruit ripening."

• Gibberellins

• Cytokinins

• Auxins

The Venus Flytrap is an unusual plant that is both an autotroph and a heterotroph.  It has special hairs on the inside of the plant that react whenever an insect walks across them.  This response to touch is called

• Hydrotropism

• Phototropism

• Thigmotropism

• Turgor pressure