Plant Homeostasis

Turgor Pressure Tropisms and Homeostasis

Multiple Choice

What tissue in both the root and shoot systems of plants conducts water and minerals throughout the plant____

• phloem

• leaves

• xylem

• mesophyll

Multiple Choice

If a plant grows away from a stimulus the tropism is called____

• negative

• nuetral

• positive

• linear

Multiple Choice

When a plant grows in the shade its stems tend to bend away from the shade because of the hormone auxin. This gives the plant a better chance of absorbing the sun's energy. The response by a plant growing this way is called____

• geotropism

• thigmotropism

• phototropism

• hydrotropism

Multiple Choice

Touch-me-nots are plants whose leaves rapidly droop when touched. This tropism is called____

• thigmotropism

• geotropism

• hydrotropism

• phototropism

Multiple Choice

What organelle is responsible for photosynthesis____

• mitochondria

• chloroplast

• endoplasmic reticulum

• cytoplasm

Multiple Choice

Response may be defined as____

• a stimulus

• reaction time

• any change an organism makes because of changes in its environment

• molecular accumulation

Multiple Choice

The mesophyll is a specialized group of cells specialized to carry out photosynthesis for the plant. The mesophyll could best be classified as____

• an organ

• tissue

• an organ system

• an organism

Multiple Choice

What part of the plant is responsible for absorbing water from its environment____

• stems

• roots

• shoots

• leaves

Multiple Choice

If a plant grows toward a stimulus, the tropism is____

• negative

• nuetral

• benign

• positive

Multiple Choice

Water is stored in this organelle____

• chloroplast

• vacuole

• mitochondria

• ribosome

Multiple Choice

Thigmotropism is a plant's response to____

• sun

• gravity

• water

• touch

Multiple Choice

Plants are positively hydrotropic. This means their ____will naturally move towards ____.

• roots, sun

• stem, gravity

• roots, water

• stem, water

Multiple Choice

When a plant has low turgor pressure it is said to be hypertonic. A plant that is hypertonic has____

• moved toward the sun

• died

• lost all its flowers

• wilted

Multiple Choice

Plants respond to internal and external stimuli. Auxin is a plant hormone that____

• makes roots grow longer

• causes a plant's stem to bend toward the sun

• increases seed production

• allows transpiration

Multiple Choice

Two examples of positive thigmotroprism are____

• roots moving deep into the soil and shoots moving upward

• stems bending towards the sun and the roots away from water

• a vine wrapping around a post, venus flytrap closing on an insect

• flowers falling from their stems, and roots moving toward minerals

Multiple Choice

Sugars created during the process of photosynthesis are are distributed through the plant inside of the following type of tissue____

• xylem

• phloem

• mesophyll

• epidermis

Multiple Choice

Stomata are tiny pores in plant leaves. These are critical to a plant's ability to perform photosynthesis and maintain homeostasis because they____

• transport water to the roots

• provide the plant with nitrogen

• distribute sugar in the leaves

• allow gases to enter and leave