Plant Nutrition

Question 1

Photosynthesis

Answer 1

A process where plants manufacture carbohydrates from raw materials using energy from light. Light energy into Chemical Energy

Question 2

Equation of Photosynthesis

Answer 2

Carbon Dioxide + Water —> Glucose + Oxygen in the presence of light and chlorophyll

6CO2 + 6H2O —> C6H12O6 + 6CO2

Question 3

Chlorophyll

Answer 3

Transfers light energy into chemical energy in molecules for the synthesis of carbohydrates

Question 4

uses of the Glucose created by Photosynthesis

Answer 4

Glucose can be converted into Starch for efficient energy storage

Can also be converted into Cellulose to build cell walls

Glucose can also be used in respiration to provide energy

Converted Into sucrose for transport in the phloem

Combined with nitrates form soil to form proteins

Converted into fats and oil for energy storage in seeds

Converted into Nectar to attract pollinators

Question 5

Cells In a Leaf: Upper Epidermis

Answer 5

A thin protective and transparent layer that allows light to enter and contact the palisade mesophyll.

Above it, the Cuticle which tops the whole leaf is found. it prevents water from evaporating and it’s made out of wax.

Question 6

Cells In a Leaf: Palisade Mesophyll

Answer 6

It is located below the Upper Epidermis. Tightly packed cells with chloroplasts. Best for photosynthesis and light absorption

Question 7

Cells In a Leaf: Spongy Mesophyll

Answer 7

Below the Palisade Mesophyll. It contains air spaces that increase surface area, allowing greater gas exchange diffusion.

Question 8

Cells in a Leaf: Vascular Bundle

Answer 8

Also located Below the Palisade Mesophyll. Contains the Xylem and Floem (veins of the leaf). They transport substances to and from the leaf

Xylem: Transports water into the leaf for mesophyll cells to use in photosynthesis and transpiration in the stomata. It is made from dead cells

Phloem: Transports sucrose and Amino acids around the plant

It also has Thick walls that help support the stem and the leaf.

Question 9

Cells in a Leaf: Lower Epidermis

Answer 9

Contains Guard Cells and Stomata

Guard Cells: absorbs and loses water to open and close the stomata to allow carbon dioxide to diffuse in and oxygen to diffuse out the leaf

Stomata: It’s where the Gas exchange takes place. Opens during the Day and Closes during the night. Water evaporation also occurs here to avoid water loss.

Question 10

Nitrate Deficiency in plants

Answer 10

Nitrate ions are important for making amino acids (proteins).

A deficiency causes the yellowing of the plant and prevents growth

Question 11

Magnesium deficiency in plants

Answer 11

Magnesium is important for the making of chlorophyll.

A deficiency of magnesium causes yellowing around the veins of the leaf. (Xylem and Phloem)