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Questions and Answers
What are the main functions of flowers?
What are the main functions of flowers?
The main functions of flowers are to produce fruits and facilitate sexual reproduction.
Name a plant that has compound leaves.
Name a plant that has compound leaves.
Coconut.
How do some leaves contribute to vegetative reproduction?
How do some leaves contribute to vegetative reproduction?
Some leaves, like those of Bryophyllum, can produce new plants.
What is the process by which plants produce their food?
What is the process by which plants produce their food?
What are adventitious roots?
What are adventitious roots?
What are some examples of plants adapted to store water in their leaves?
What are some examples of plants adapted to store water in their leaves?
How are seeds typically dispersed from flowers?
How are seeds typically dispersed from flowers?
What role do flowers play in the life cycle of a plant?
What role do flowers play in the life cycle of a plant?
Why do flowers vary in size, smell, shape, and color?
Why do flowers vary in size, smell, shape, and color?
What happens when a Bryophyllum leaf is cut into pieces?
What happens when a Bryophyllum leaf is cut into pieces?
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Study Notes
Plant Diversity
- Distinction between flowering (angiosperms) and non-flowering plants; flowering plants produce flowers, while non-flowering do not.
- Examples of flowering plants include Rose, Gardenia, and Water Lily, whereas non-flowering plants include Ferns and Salvinia.
- Androecium is the male part of a flower, consisting of stamens composed of an anther and a filament. Its primary role is pollen production.
- Gynoecium is the female part of a flower, containing components such as the stigma, style, ovary, and ovules. Its main function is seed production.
- Diversity of flowers:
- White flowers: Example - ‘Idda’/‘Oosi mallikai’
- Colorful petals: Example - Rose
- Night-blooming flowers: Example - ‘Sepalika’/‘Pavala mallikai’
- Fragrant flowers: Example - Jasmine
- Nectar-producing flowers: Example - ‘Kathurumurunga’/‘Agathi’
- Fruits develop from flowers and contain seeds. Seeds germinate to produce new seedlings.
- Compound leaves, such as those of Coconut and Tamarind, have multiple leaflets.
- Photosynthesis is the primary function of leaves, allowing plants to produce food. Some leaves, like Aloe, are adapted for water storage.
- Specific leaves, such as Bryophyllum, can reproduce vegetatively, producing new plants through leaf sections.
- Flowers are vital for sexual reproduction, combining male and female structures to form seeds.
- Flower morphology varies greatly in size, shape, color, and scent, which aids in plant reproduction.
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