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Plant Systems & Homeostasis

Total questions: 28

Worksheet time: 28mins

Name
Class
Date
1.
What type of tropism is response to touch? 
a)
Gravitropism
b)
Phototropism
c)
Thigmotropism
d)
Hydrotropism
2.
This picture would represent which type of tropism?
a)
Phototropism
b)
Geotropism
c)
Hydrotropism
d)
Thigmotropism
3.
Changes in an organism's environment that cause a response
a)
Tropism
b)
Hormone
c)
Stimuli
d)
Response
4.
When the plant grows toward the stimuli
a)
Positive
b)
Negative
5.
When the plant grows away from the stimuli
a)
Positive 
b)
Negative
6.
What type of tropism response to water? 
a)
Hydrotropism
b)
Gravitropism
c)
Thigmotropism
d)
Phototropism
7.
A vine plant brushes against a fence and wraps itself around the fence.  To what stimulus is the plant responding? 
a)
phototropism
b)
hydrotropism
c)
thigmotropism
d)
gravitropism
8.
The shoot of a plant growing up. 
a)
Positive Gravitropism 
b)
Negative Gravitropism 
c)
Thigmotropism
d)
Hydrotropism
9.
Which of the following is an organism’s reaction to a change in its surroundings?
a)
response 
b)
distraction
c)
stimulus
d)
development
10.
A plant’s roots grow thicker near the stream than away from the stream.  To what stimulus is the plant responding? 
a)
thigmotropism
b)
hydrotropism
c)
phototropism
d)
gravitropism
11.

What term refers to a plant growing or moving away from a stimulus?

a)

Homeostasis

b)

Tropism

c)

Dormancy

d)

Internal stimulus

12.
When the plant responds to water
a)
Phototropism
b)
Geotropism
c)
Hydrotropism
d)
Thigmotropism
13.
Organs and tissues that perform the same function is called _____________?
a)
cells
b)
tissues 
c)
organ system
d)
organs
14.

Leaves are composed of vascular tissue. What level of organization best describes leaves?

a)

Tissue

b)

Organ

c)

Organ system

d)

Organism

15.

A plant by a window starts growing towards the window. Why?

a)

Heat from the sun caused the plant to grow towards the window

b)

The plant is leaning towards the window to get fresh air

c)

The plant is responding to the stimulus of sunlight

d)

The plant is responding to water in the air and growing towards it

16.
If the environment gets cold, we will often shiver in order to:
a)
keep body temperature the same as the external temperature
b)
decrease body temperature
c)
increase body temperature
d)
regulate blood pressure
17.

The maintenance of an organism’s internal environment is called:

a)

stimulus

b)

homeostasis

c)

balancing

d)

stimuli

18.
The "cause" for something to happen is the
a)
response
b)
effect
c)
stimulus
d)
homeostasis
19.
The "effect" of a given stimulus is the...
a)
response
b)
stimulus
c)
cause
d)
result
20.
a body system that controls and coordinates all body activities through electric impulses/messages between brain, spinal cord and nerves.
a)
endocrine system 
b)
nervous system
c)
nerve
d)
neuron
21.
a body system that controls growth and homeostasis by secreting hormones from glands.
a)
skeletal system
b)
nervous system
c)
endocrine sytem
d)
integumentary system
22.
What is another word that can be used to describe "homeostasis"?
a)
STABLE
b)
EQUAL
c)
COMPLETE
d)
CORRECT
23.

Name the levels of organization in the human body in order from smallest to largest:

a)

Tissue, organ, organ system, organism

b)

Organ system, organism, tissue, organs, cells

c)

Cells, tissue, organs, organ system, organism

d)

Cells, organs, tissue, organ system

24.

Homeostasis

a)

allows for a wildly fluctuating internal environment

b)

is impossible in vertebrates

c)

is the maintenance of a relatively stable internal environment

d)

is the maintenance of a relatively stable external environment

25.
Which of the following is an example of an external Stimuli?
a)
Becoming dehydrated and then taking a drink of water
b)
Getting a headache and then taking Excedrin
c)
Having hunger pains and then eating a sandwich
d)
Smelling Pizza and then eating a piece
26.
A cheetah's water levels are becoming too high, and its thirst is quenched. In response to this, the cheetah's body will send internal signals...
a)
Of hunger, since the cheetah needs food
b)
Of thirst, since all living things need water
c)
To sweat, so the organism can shed some of the water
d)
Of quenched thirst, so the organism will stop drinking water
27.
Roots grow downward in the soil in response to-
a)
gravity
b)
sunlight
c)
water 
d)
wind
28.
When a seedling emerges upright from the soil, which force is it overcoming?
a)
Gravity
b)
Magnetism
c)
Repulsion
d)
Heat

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