Human Characteristics -Xylem Vessels
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Characteristics and classification of living organisms. In order to be considered alive, an organism must be able to show the following seven characteristics.
Movement - the action of an organism causing a change of position or place Respiration - a chemical reaction that takes in all living cells that break down glucose and release energy Sensitivity - the ability of an organism to dectect and respond to changes in the external and internal environment Growth- the permanent increase in dry mass and size Excretion - the removal of waste products Reproduction- the process of making more of the same kind organisms Nutrition- taking in materials (food and nutrients)for energy, growth and development.
What is classification Give two reasons why classifying organisms is a good idea
Grouping things according to similar characteristics - easier to research , identify and name
What is a food chain
Show us the flow of energy from one organism to another in an ecosystem
What does the word photosynthesis mean
Using light to make food
Think of two more words that start with “photo”. Write these words and say what it means
Photography- using light to make a picture Photocopy- using light to copy a picture
What happens during photosynthesis
During photosynthesis the plant uses energy from the sun , water from the soil and carbon dioxide from the atmosphere to produce glucose as a food source and oxygen
How can we determine whether photosynthesis turned took place
The amount of carbon dioxide decreases, water decreases and glucose and oxygen increases
Why is glucose not stored inside a plant
To not lower the water potential inside the cell that would cause to much water to enter the cell and lead to cell death
Why should we destarched before photosynthesis investigation
To make sure any starch present after the investigation was formed during the investigation
Biomass
Material that is made up of living cells and tissue
Difference between chlorophyll and chloroplast
Chlorophyll- the pigment that gives colour to leaves that are green Chloroplast - the cell organelle found inside photosynthesis plant tissue.
Why are the roots of a plant not green but the leaves are
The roots are never exposed to the sunlight and therefore cannot photosynthesis and therefore will not contain chlorophyll
Explain the colour change of the plant
Chlorophyll is Brocken down . Plant removes chlorophyll and no new tips added
Function of leaf Cuticle Upper epidermal Lower epidermal Inter secular airspeces Spongy Vein Stomata
• waxy layer that prevents water loss • protect the plant cells inside the plant -protect the plant cells -allow gases to move between the cells -photosynthesis • palicide spcells - photosynthesis • allow the movements of gassses. • transport minerals and water
2) What are the functions of: NaOH Soda lime Water
• absorb any carbon dioxide in the bell jar • absorb any CO2 in the air from entering the bell jar • to make two conclusions similar
Purpose of root hair cell
To absorb water and minerals
How is a root hair cell adapted for its function
It has a larger surface area It has a larger vacuole
Function of root plants
Absorb water and mineral in the soil Anchor the plant in the soil. Some plants store food in their roots
What are xylem vessels
Are long hollow stems that Cary water and minerals from the root of the plant it’s leaves
Function and how it adapted
• transport water and minerals • they have hard and strong walls