Pre Lab: Photosynthesis Lesson 4 Day 2

Posljednje ažuriranje about 2 years ago

15

0

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Pre Lab: Photosynthesis Lesson 4 Day 2

Posljednje ažuriranje about 2 years ago

15

1

What is the question that the student is trying to investigate?

A. If plants make oxygen in the summer time

B. If plants take in more carbon dioxide when there is more sunlight

C. If plants take in more carbon dioxide in the winter time

D. If plants make glucose

1

How much BTB solution is put into each test tube?

A. 0 mL

B. 20 mL

C. 50 mL

D. 3 drops

1

0

Test tube A was placed under indirect light, what color do you think the solution will be after 24 hours?

A. Yellow

B. Green

C. Blue

0

Test tube B was placed under direct light, what color do you think the solution will be after 24 hours?

A. Yellow

B. Green

C. Blue

0

Test tube C and D were covered in tin foil and placed under the lights, what color do you think the solution will be after 24 hours?

A. Yellow

B. Green

C. Blue

1

Plants store excess sugars as

A. glucose

B. fructose

C. starch

D. ATP

1

Test tube A was placed under indirect light, what color do you think the solution will be after 24 hours?

A. Yellow

B. Green

C. Blue

Test tube B was placed under direct light, what color do you think the solution will be after 24 hours?

A. Yellow

B. Green

C. Blue

Test tube C and D were covered in tin foil and placed under the lights, what color do you think the solution will be after 24 hours?

A. Yellow

B. Green

C. Blue

The hypothesis of this investigation is

A. If a plant is exposed to less sunlight then the plant will use more oxygen

B. If a plant is exposed to more sunlight then the plant will use more carbon dioxide

C. Plants make more glucose in the summertime

BTB solution indicates the amount of

A. glucose

B. oxygen

C. ATP

D. carbon dioxide

If the BTB solution turns yellow, there is

A. No carbon dioxide

B. High amounts of carbon dioxide

C. Low amounts of carbon dioxide

What is the independent variable (the one thing that the scientist changes)

A. the amount of BTB solution

B. The number of plants in the test tube

C. The amount of light the plant/test tube receives

D. The time the plant is under the light

What is the dependent variable (what is being measured)

A. the amount of carbon dioxide in the test tube

B. the amount of sunlight

C. time the plant is under the light

D. the number of plants

What is NOT a control in the experiment

A. the amount of BTB solution put into the test tube

B. The number of plants in each test tube

C. The amount of light the plant/test tube receives

D. The time the plant is under the light

The presence of starch can be determined by an iodine test

True

False

The leaf in Test tube B turned black after the iodine test. This means that the leaf in test tube B contained

A. lots of starch

B. no starch

The leaf in Test tube C turned turned a reddish brown color after the iodine test. This means that the leaf in test tube C contained

A. lots of starch

B. no starch