Plant Nutrition

Question 1

Photosynthesis

Answer 1

A process by which plants manufacture carbohydrates from raw materials using energy from light.

Question 2

Equation of photosynthesis in words

Answer 2

Carbon dioxide + water (sunlight —> Clorophyll) glucose +oxygen

Question 3

Equation of photosynthesis

Answer 3

6CO2+6H2O —–> C6H12O6+6O2

Question 4

Petiole

Answer 4

The part where the Flat part of the lamina is joined to the rest of the plant.

Question 5

Vascular bundles

Answer 5

the veins that run through the petiole

Question 6

Epidermis

Answer 6

The closely fitting cells on the top and bottom of the leaf.

Question 7

Why storing Glucose is bad?

Answer 7

• It is reactive, it might be involved in unwanted reactions
• It might dissolve with water around and be lost from the cell
• When dissolved it would increase the concentration of the solution in the cell.

Question 8

Specialized cells in photosynthesis.

Answer 8

• Cuticle - A waxy layer that stops too much water from evaporating
• Stomata - Small openings in the lower epidermis of the leaf
• Guard cells - Sausage-shaped cells that open and close to let gases in or out to the stomata.
• Xylem and phloem - Xylem carries water and minerals through the roots to the leaves of the plant and carries back food to distribute to the rest of the plant.

Question 9

Mesophyll

Answer 9

Upper epidermis
Lower epidermis
Spongy mesophyll

Question 10

Leaf adaptations ( CO2 )

Answer 10

• Carbon dioxide - The leaf held out into the air by the stem and the leaf stalk, and its large surface area helps to expose it to as much air as possible into the mesophyll cells through the stomata, which connects to spongy cells so all the CO2 can diffuse.

Question 11

Leaf adaptations ( Water )

Answer 11

• Water - Water is obtained from the soil through root hair cells by active transport, then carried up by xylem vessels to mesophyll cells through osmosis.

Question 12

Leaf adaptations ( Sunlight )

Answer 12

Sunlight - The leaf has a broad and flat surface facing the sun and they do not overshade other leaves in the plant, The thinness of the leaf helps absorb the sunlight quicker to the mesophyll cells where chloroplasts and arranged to get the maximum sunlight epidermis cells are transparent to help this, inside the chlorophylls are arranged flat so they can absorb maximum light.

Question 13

limiting factor

Answer 13

Something in the environment with a short supply that it restricts life processes