4.12 : vegetative reproduction - typepadmssuesbloq.typepad.com/files/f3---notes-4.12-2.pdf · 4.12...
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4.12 : Vegetative Reproduction Plant parts Used in Vegetative Reproduction
• Vegetative reproduction : Production of new plants using any parts of a plant except seed
• A form of asexual reproduction as no gametes are used
• Carried out in different ways using different parts of plants
LEAVES
• Some plants form buds at the edge of their leaves
• The buds grow into new plants
• Examples: – Bryophyllum – Begonia – Mother-in-
law’s tongue
4.12 : Vegetative Reproduction
4.12 : Vegetative Reproduction CREEPING STEMS
• Long stems which creep along the ground.
• Shoots & roots grow at the nodes & become new plants
• Examples : – Grass – Sweet potato – Strawberry
4.12 : Vegetative Reproduction STEM CUTTINGS
• Short stems containing buds at the nodes are cut & planted
• The buds develop into new plants
• Examples : – Sugar cane – Tapioca – Rose
4.12 : Vegetative Reproduction BULBS
• Bulbs : Short, vertical underground stems surrounded by the swollen bases of the leaves
• New buds grow from the axils of the swollen leaves
• Examples : – Onions – Spider lily – Garlic
4.12 : Vegetative Reproduction RHIZOMES
• These horizontal underground stems which store food
• They produce buds at the nodes
• Examples : – Ginger – Canna lily – Lallang
4.12 : Vegetative Reproduction TUBERS • Swollen ends of
underground stems which store food
• Buds form on the swollen ends of the stems
• Examples : – English potato – Dahlia
4.12 : Vegetative Reproduction CORMS
• Short erect underground stems which store food
• Stems are solid & not surrounded by leaf bases as in bulbs
• Examples: – Yam – Water chestnut – Sengkuang
4.12 : Vegetative Reproduction SUCKERS
• Young shoots grow up from a short underground stem
• The shoots can be separated from the parent plant and develop into new plants
• Examples : – Bamboo – Banana – pineapple
4.12 : Vegetative Reproduction Advantages of Vegetative Reproduction
• New plants grow much faster than those grown from seeds
• New plants can obtain food from the parent plants until they can make their own food
• Good qualities of the parent plant are inherited
• Does not require agents of pollination
• Does not need fertilization as no gametes are used
4.12 : Vegetative Reproduction Advantages of Vegetative Reproduction
• New plants grow much faster than those grown from seeds
• New plants can obtain food from the parent plants until they can make their own food
• Good qualities of the parent plant are inherited
• Does not require agents of pollination
• Does not need fertilization as no gametes are used