Human Characteristics -Xylem Vessels

Question 1

Characteristics and classification of living organisms.
In order to be considered alive, an organism must be able to show the following seven characteristics.

Answer 1

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.

Question 2

What is classification
Give two reasons why classifying organisms is a good idea

Answer 2

Grouping things according to similar characteristics
- easier to research , identify and name

Question 3

What is a food chain

Answer 3

Show us the flow of energy from one organism to another in an ecosystem

Question 4

What does the word photosynthesis mean

Answer 4

Using light to make food

Question 5

Think of two more words that start with “photo”. Write these words and say what it means

Answer 5

Photography- using light to make a picture
Photocopy- using light to copy a picture

Question 6

What happens during photosynthesis

Answer 6

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

Question 7

How can we determine whether photosynthesis turned took place

Answer 7

The amount of carbon dioxide decreases, water decreases and glucose and oxygen increases

Question 8

Why is glucose not stored inside a plant

Answer 8

To not lower the water potential inside the cell that would cause to much water to enter the cell and lead to cell death

Question 9

Why should we destarched before photosynthesis investigation

Answer 9

To make sure any starch present after the investigation was formed during the investigation

Question 10

Biomass

Answer 10

Material that is made up of living cells and tissue

Question 11

Difference between chlorophyll and chloroplast

Answer 11

Chlorophyll- the pigment that gives colour to leaves that are green
Chloroplast - the cell organelle found inside photosynthesis plant tissue.

Question 12

Why are the roots of a plant not green but the leaves are

Answer 12

The roots are never exposed to the sunlight and therefore cannot photosynthesis and therefore will not contain chlorophyll

Question 13

Explain the colour change of the plant

Answer 13

Chlorophyll is Brocken down . Plant removes chlorophyll and no new tips added

Question 14

Function of leaf
Cuticle
Upper epidermal
Lower epidermal
Inter secular airspeces
Spongy
Vein
Stomata

Answer 14

• 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

Question 15

2) What are the functions of:
NaOH
Soda lime
Water

Answer 15

• absorb any carbon dioxide in the bell jar
• absorb any CO2 in the air from entering the bell jar
• to make two conclusions similar

Question 16

Purpose of root hair cell

Answer 16

To absorb water and minerals

Question 17

How is a root hair cell adapted for its function

Answer 17

It has a larger surface area
It has a larger vacuole

Question 18

Function of root plants

Answer 18

Absorb water and mineral in the soil
Anchor the plant in the soil.
Some plants store food in their roots

Question 19

What are xylem vessels

Answer 19

Are long hollow stems that Cary water and minerals from the root of the plant it’s leaves

Question 20

Function and how it adapted

Answer 20

• transport water and minerals
• they have hard and strong walls