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MODIFIED PLANT FOOD STORAGE ORGANS

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Presentation on theme: "MODIFIED PLANT FOOD STORAGE ORGANS"— Presentation transcript:

1 MODIFIED PLANT FOOD STORAGE ORGANS
3.3.2 MODIFIED PLANT FOOD STORAGE ORGANS

2 One example of a root, stem and leaf modified as a food storage organ
Need to know One example of a root, stem and leaf modified as a food storage organ

3 ROOT MODIFIED TO STORE FOOD
Example Carrot Dicot plants, e.g. carrots produce one main tap root This root becomes fleshy and swollen with stored starch

4 STEM MODIFIED TO STORE FOOD
Potatoe Example Potatoes have an underground stem system The tips of these stems become swollen with stored starch The swollen tips are called Tubers

5 Potatoe Tuber….a swollen stem tip
Apical Bud Lenticel Lateral Bud

6 LEAF MODIFIED TO STORE FOOD
Onion bulb Example Is a reduced underground stem With fleshy leaves swollen with stored starch Surrounding a central apical bud

7 Onion Bulb Dry Scaley leaves Fleshy leaves Apical Bud Reduced stem
Adventitious roots

8 Learning Check Give an example of a stem modified to store food.
Give an example of a root modified to store food. In what form is the food stored ? What is a bulb ?

9 See also section 3.6.1 Vegetative reproduction in plants

10 END


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