Photosynthesis

Question 1

Why are plants a very important part of our eco system?

Answer 1

There are thousands of different types of plants in the universe and each has an important job. Humans rely on plants for many different reasons such as food, medicine and sources of vitamins

Question 2

Why are leaves thin and wide?

Answer 2

-Leaves are thin to allow them to get carbon dioxide from the bottom of the leaf to the top for photosynthesis
-Leaves are wide and have a large surface area in order to absorb as much light energy as possible

Question 3

What is the function of the Upper Epidermis?

Answer 3

The upper epidermis protects the inner layers, it is also transparent to let light energy through

Question 4

What is the function of the Lower Epidermis?

Answer 4

The lower epidermis also protects inner layers and is transparent but also contains stomata to allows gas exchange and guard cells

Question 5

What is the function of the Palisade Mesophyll Cells?

Answer 5

The palisade mesophyll cells are the main site of photosynthesis and are full of chloroplasts

Question 6

What is the function of the Spongy Mesophyll Cells?

Answer 6

The spongy mesophyll cells are loosely arranged with air spaces to let CO2 and oxygen in and out of cells

Question 7

What is the function of the Stomata?

Answer 7

The stomata are pores which allow gas exchange and water loss

Question 8

What is the function of the Guard Cells?

Answer 8

Guards cells change shape to open and close stomata to control gas exchange

Question 9

What is the function of Moist Air Spaces?

Answer 9

Moist air spaces allow gas a change with the spongy mesophyll

Question 10

Where are cells in a leaf found?

Answer 10

They are found just below the upper epidermis

Question 11

Do palisade mesophyll cells contain chloroplasts?

Answer 11

Yes lots of them!

Question 12

What is photosynthesis?

Answer 12

Photosynthesis is the prices by which plants are able to produce their own food. The sun provides light energy and the leaves of the plant convert this light energy into chemical energy

Question 13

What are the raw materials of photosynthesis?

Answer 13

Water and Carbon Dioxide

Question 14

What are the products of photosynthesis?

Answer 14

Oxygen and glucose

Question 15

How does the plant access water to carry out photosynthesis?

Answer 15

The plant takes water up through its roots, it then moves upwards through the stem to the leaves

Question 16

Where is the oxygen released after photosynthesis?

Answer 16

Into the atmosphere

Question 17

What is chlorophyll?

Answer 17

Chlorophyll is the green pigment used to trap light energy during photosynthesis

Question 18

Where is chlorophyll found?

Answer 18

Chlorophyll is found in the chloroplasts in the green plant cells

Question 19

How do plants store glucose?

Answer 19

Plants store glucose as starch

Question 20

What do the plants use glucose for?

Answer 20

Plants use glucose to make cellulose for plant cell walls

Question 21

What is the word equation for photosynthesis?

Answer 21

Light energy
Water + Carbon Dioxide ➡️ Glucose + Oxygen
Chlorophyll

Question 22

What do carnivores eat?

Answer 22

Only meat

Question 23

What do herbivores eat?

Answer 23

Only planys

Question 24

What is meant by a food chain?

Answer 24

The transfer of energy from one organism to another is set out as a food chain. In a food chain, one organism feeds the previous one and in turn provides energy for the next

Question 25

What do the arrows on a food chain indicate?

Answer 25

The arrows show the direction of energy flow

Question 26

What are green plants know as in a food chain?

Answer 26

Producers as they make their own food through photosynthesis

Question 27

What do consumers on a food chain eat

Answer 27

Plants and other animals

Question 28

What is a food web?

Answer 28

A food web is an inter-connected series of food chains

Question 29

What do predators eat?

Answer 29

Other animals called prey

Question 30

What do all food chains and webs begin with?

Answer 30

A producer

Question 31

In a food chain what is the producers source of energy?

Answer 31

The sun

Question 32

What are producers eaten by?

Answer 32

Primary consumers (herbivores)

Question 33

What are primary consumers eaten by?

Answer 33

Secondary consumers

Question 34

What are secondary consumers eaten by?

Answer 34

Tertiary consumers

Question 35

What is a pyramid of numbers?

Answer 35

A pyramid of numbers is a diagram showing the number of organisms at each stage of the food chain

Question 36

What is a pyramid of energy?

Answer 36

A pyramid of energy shows the energy content of all the organisms at each stage of the food chain

Question 37

Give three reasons why energy is last in a food chain?

Answer 37

Energy would be lost to the atmosphere, movement and undigested food also loose energy