Biology

What is the function of the epidermal tissue?

The epidermal tissue is covered with a waxy cuticle to reduce water loss. It is transparent to allow light to pass through and reach the palisade layer.

1 of 23

What is the function of the palisade mesophyll?

This layer has lots of chloroplasts, they are near the top of the leaf so that they get the most light.

2 of 23

What is the function of the spongy mesophyll?

This layer contains large air spaces for gases to diffuse in and out.

3 of 23

What is the function of meristem tissue?

This is at the growing tip of the plant it can differentiate in to lots of other plant cells.

4 of 23

What is the function of the xylem and phloem?

They transport things like water, minerals and ions.

5 of 23

Explain how the root hair cell are efficient at taking up mineral, ions and water.

They have a large surface area because they can absorb more nutrients and minerals and water.

6 of 23

What is the structure of the xylem tissue?

The xylem tissue is hollow to allow water and nutrients to pass through easily.

7 of 23

What is the function of the xylem tissue?

They carry water and minerals from the soil to the stem and leaves.

8 of 23

Define the factors which affect the rate of transpiration.

Light intensity, Temperature, air flow and humidity

9 of 23

Explain the role of the stomata and the guard cells.

The guard cells contract at night to close the stoma. They close to reduced water loss last there is no photosynthesis at night.

10 of 23

Explain the role of the phloem tissue and name the process.

Phloem tissue transports food around the plant. They transport food around the plant for immediate use. This process is call Translocation

11 of 23

Explain how substances move in and out of cell membranes via diffusion.

Substances move from a high concentration to a low concentration. Substances can move across the concentration because the cell membrane is Semi-permeable.

12 of 23

Describe Diffusion

Substances moving from a high concentration to a low concentration.

13 of 23

State the word Equation for photosynthesis.

Carbon Dioxide + Water --> Oxygen + Glucose (Energy)

14 of 23

State the symbol equation for photosynthesis.

6CO2 + 6H2O --> 6O2 + C6H12O6

15 of 23

Where does the energy from photosynthesis come from?

The light energy from the sun also from the reaction of water and carbon dioxide.

16 of 23

Factors that affect the rate of photosynthesis.

Light intensity, Temperature and Carbon dioxide levels

17 of 23

Explain what limiting factors are.

. A factor present in an environment that controls a process, particularly the growth, abundance or distribution of a population of organisms in an ecosystem

18 of 23

CO2, light intensity and temperature.

On the Co2 graph the graph levels off as there are no enzymes that can be denatured. The light intensity also levels off. The temperature rises and then decreases because after the optimum level the enzymes denature.

19 of 23

What is inverse square law?

As you move the distance increases, the light intensity decreases. They are therefore, inversely proportional.

20 of 23

How are limiting factors important to economics of a greenhouse.

The limiting factors should not be put above their optimum levels because this would not increase produce but instead make a loss.

21 of 23

State six uses of glucose?

Stored as starch and oils, Produce cellulose and enzymes, used for respiration at night.

22 of 23

How do Plants use Nitrate ions?

They are used for creating amino acids which are necessary for life.

23 of 23

Get Revising

Biology

Other cards in this set

Card 2

Front

Back

Card 3

Front

Back

Card 4

Front

Back

Card 5

Front

Back

Comments

Similar Biology resources:

Other cards in this set

Card 2

Front

Back

Card 3

Front

Back

Card 4

Front

Back

Card 5

Front

Back

Comments

Related discussions on The Student Room

Similar Biology resources: