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What are the two main types of nutrition?
What is autotrophic and heterotrophic nutrition?
What is photosynthesis?
Photosynthesis is the process by which green plants convert carbon dioxide and water into glucose by using sunlight energy absorbed by chlorophyll in the chloroplasts.
What is the function of the xylem?
The xylem transports water and minerals to the leaves
Where does photosynthesis take place in green plants?
Chloroplast
What is nutrition?
The process by which living organisms make or obtain food.
What is the chemical worded formula for photosynthesis?
Carbon Dioxide + water -sunlight absorbed by chlorophyll-> glucose + oxygen
What is the function of the phloem?
The phloem transports the photosynthetic products/ food to the other parts of the plant
Where on the plant has the most chloroplasts?
The leaf
What is an adaptation of aquatic plants?
Their stomata are on the upper surface of the plant, for gaseous exchange.
What is an adaptation of the leaf to prevent water loss?
Spines/ thorns, they have a thick waxy cuticle
What is the function of the stomata?
Gaseous exchange: allows carbon dioxide to diffuse into the leaf and oxygen to diffuse out.
What gives green plants their green colour and where is it produced?
Chlorophyll produced in the chloroplast
Fill in the blanks:
All leaves consist of a flat part called the _____. Photosynthesis takes place in the _____ ___of this part of the leaf.
Lamina
Mesophyll Cells
State three (3) limiting factors of photosynthesis
Light, Temperature, Water, Carbon dioxide
What is the function of the cuticle?
The cuticle is located outside the epidermis and protects against water loss
If a plant is seen with green and white leaves, will all the leaves participate in the process of photosynthesis?
Explain your answer.
No, the white leaves will not participate in the process of photosynthesis as chlorophyll is needed for the absorption of sunlight energy, chlorophyll can be identified by its green pigment.
State three (3) conditions needed for autotrophs to photosynthesize.
Carbon Dioxide, Water, sunlight energy, Chlorophyll, Enzymes, Suitable temperature, Certain mineral ions.
Why does photosynthesis occur slower in underwater plants?
Photosynthesis occurs at a slower pace than normal photosynthesis as energy from the sun is absorbed by water layers and only some energy reaches the plant.
What is the function and feature of the palisade mesophyll fulfill?
Function: Aids in gas exchange and photosynthesis by chloroplasts.
Feature: These cells are column-shaped or arranged in a 90-degree and packed with chloroplasts.
They are tightly packed allowing for maximum light energy absorption.
Do all plants need photosynthesis to obtain or make food to grow? If not, Why and which?
No, because certain plants are able to obtain the food and nutrients they need directly from the soil and surrounding areas, eg. mushrooms, venus fly trap