Plant Nutrition

Question 1

Photosynthesis formula

Answer 1

6 CO2 + 6 H2O – (sunlight and chlorophyll) – C6H12O6 + 6 O2

Question 2

Definition photos.

Answer 2

“process by which plants manufacture carbohydrates from raw materials with light energy”

Question 3

What does chlorophyll do in photos.?

Answer 3

Trap sunlight energy and transfer it into chemical energy

Question 4

Name the use of glucose that does not convert glucose into anything

Answer 4

Use for respiration in the mitochondria

Question 5

What is glucose converted into for storage? Why?

Answer 5

Starch because as it is unreactive and insoluble, it is better for storage than glucose, which is very reactive .

Question 6

Why is glucose used to make cellulose?

Answer 6

For the production of new cell walls

Question 7

What two things are made with glucose that use ions, and what is their respective one?

Answer 7

Make proteins (nitrate ions)
Make chlorophyll (magnesium ions)

Question 8

What is glucose converted into for the transport of substances? Why?

Answer 8

Sucrose because it is unreactive, but soluble (good for transportation)

Question 9

Name the benefits of the lamina

Answer 9

Broad and flat part to have a large surface area to trap sunlight

Question 10

What adaptation of the leaf transports water and minerals?

Answer 10

Petiole / leaf stalk

Question 11

What goes in through the stoma during the day?

Answer 11

CO2

Question 12

What goes out of the stoma during the night?

Answer 12

CO2

Question 13

Why do we test for starch?

Answer 13

To see if the plant made photos.

Question 14

What liquid is used for the test in starch? Explain its colors

Answer 14

Iodine solution
Yes photos.= blue-black
No photos.= orange-brown

Question 15

Why does the plant need to be destarched?

Answer 15

To make sure that all starch found was produced during the experiment

Question 16

In what is the leaf boiled in testing for starch experiment? Why? (2 things)

Answer 16

Water: to break down cell membrane so that the iodine solution can reach the chloroplasts
Ethanol: to extract chlorophyll so that color change is seen

Question 17

Why is the leaf put in water for the testing for starch?

Answer 17

To soften it

Question 18

Name the steps of the testing for starch experiment

Answer 18

Destarch
Dark 24hs
Boil leaf in water
Boli leaf in ethanol
Put leaf in water
Add iodine solution

Question 19

Why do we test on variegated leaves?

Answer 19

To show that chlorophyll is necessary for photosynthesis

Question 20

Why is a plastic bag wrapped in the plant pot in the CO2 necessity experiment?

Answer 20

So that CO2 does not appear from organisms in soil

Question 21

What is soda lime used for in the CO2 necessity experiment?

Answer 21

To absorb CO2 that enters the jar

Question 22

Why do we also use sodium hydroxide when we have soda lime in the CO2 necessity experiment?

Answer 22

To absorb CO2 done by respiration form the plant

Question 23

Explain how do we show that light is necessary for photos.

Answer 23

Part of the plant is wrapped with a black/aluminum foil, which prevents light reaching, and then you leave it in the sun for some hours. Then, test for starch. The covered part did not do photos.

Question 24

Think/draw small diagram of the “oxygen is produced on photos.” experiment

Answer 24

Look at image in phone

Question 25

Image in phone about cell layers. Determine the letters

Answer 25

a- upper cuticle
b- upper epidermis
c-xylem
d- pholem 
e- palisade mesophyll
f- spongy mesophyll
g- guard cells
h- stoma
i- lower epidermis 
j- lower cuticle

Question 26

How do we know that the gas produced during the “oxygen is produced in photos.” experiment is actually oxygen? Explain

Answer 26

Glowing splint test
Light a match and blow it off
If when the match is introduced in the test tube it turn on, it is oxygen

Question 27

Limiting factor definition

Answer 27

Factor or aspect of the experiment in short supply that restricts a proccess

Question 28

Rate definition

Answer 28

Something divided time

Question 29

How do we usually measure the rate of photosynthesis?

Answer 29

Inverted measuring cylinder filled with water

Measure the volume of oxygen produced during a GIVEN TIME

Question 30

Look at image in phone. This graph shows light intensity on the rate of photos. From what to what point is light intensity the limiting factor?

Answer 30

From A to B

Question 31

What could be three limiting factors for photos.?

Answer 31

Temperature
CO2 concentration
Light intensity

Question 32

How does a graph in “temperature on the rate of photos. look like? Explain

Answer 32

It goes up and then down as the warmer you get, more photos. the plant produces. But with too much heat photos. it not produced because stomata close to prevent dehydration and CO2 cannot enter.

Question 33

Is the more photosynthesis or respiration with bright light? What is the CO2 concentration?

Answer 33

More photos

Low CO2 concentration

Question 34

Explain the hydrocarbonate indicator solution’s colors

Answer 34

Low CO2: Purple
Middle: Orange
High CO2: yellow

Question 35

At night, you do the experiment for CO2 concentration. What would be the color of the hydrocarbonate solution?

Answer 35

Yellow

Question 36

What is an important use for water in experiments?

Answer 36

It absorbs heat so light passes but temperature isn’t affected