photosynthesis plant unit. vascular or nonvascular why?
TRANSCRIPT
PhotosynthesisPlant Unit
Vascular or NonvascularWhy?
What four things do plants need in order to begin photosynthesis?
Photosynthesis
Plant process of synthesizing their own food
1. Plants trap the sun’s light energy and use the energy to break down water into hydrogen and oxygen.
2. Plants take in carbon dioxide and combine with the hydrogen and oxygen to form glucose (sugar).
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Chloroplast
The plant organelle where photosynthesis occurs
Chlorophyll within the chloroplast captures the light energy from the sun
Plant Reproduction
Gametes-reproductive cells Asexual reproduction-plants reproduce without male
and female gametes Sexual reproduction-plants reproduce using male
and female gametes
Asexual Reproduction Many methods New plant is almost always a clone of the parent
plant (genetically identical) Disadvantage: that mutations can lead to distinction
in all clones from the parent plant
Asexual Reproduction
Runners-grow above the ground Grow stems that branch out along the ground These stems have places where new roots can
grow, starting a whole new plant. Examples: Strawberries and spider plants
Asexual Reproduction
Stems that grow below the ground are called rhizomes.
Examples: grasses, irises, bamboo, aspen trees
Sexual Reproduction
Development from spore or seed
DNA from the male gamete combines with DNA from the female gamete
New plant is not identical both has aspects of both DNA
Leads to diversity and stronger resistance to diseases
Propagation Cutting up parts of plants and growing entirely new plants
from the parts.
Produces identical offspring
Farmers use to produce identical plants
Can be grown from any plant organ or tissue including buds, roots, stems, and leaves