Algae and plants Flashcards
Similarities between Plants and Algae
- Both go through photosynthesis
- Both have a cell wall
- Both store food as starch
What is algae?
- Algae are a plant-like protist that are single-celled and contain chlorophyll. They are not considered to be plants because they lack vascular tissue, leaves, roots, and true stems
Nonvascular plants
- Lack a vascular system; they depend on osmosis to transport stuff from one part of the plant to a different one. Size is limited. (etg. Moss)
Vascular Tissue
- Xylem transports water and minerals from the roots to the shoots and leaves
- Phloem tissue transports the food made during photosynthesis to other parts of plant
Vascular Seedless plants
- Plants that have vascular tissue; reproduce through the use of spores (not seeds). (etg. Ferns)
Vascular Seeded plants
- Plants that have vascular tissue; reproduce through the use of seeds. (etg. Tulip)
Gymnosperm
o Gymnosperm: a vascular plant that produces unprotected seeds (no ovary or fruit encasing the seeds) CONES
Angiosperm
a vascular plant that produces protected seeds (encased in an ovary/fruit). Most diverse group of land plants
Reproduction through spores
- A spore is a cell in a seedless plant
- Each spore is produced by a parent plant
- Spores are released and carried elsewhere. When it lands (if in a suitable environment), it grows into a tiny plant called a gametophyte
The animal cell and the plant cell
The two cells are very similar, BUT the plant cell has chloroplast and a cell wall. The animal cell does not
The Pistil
- The female reproductive part
- Composed of three separate parts: the stigma, the style, and the ovary (which contains the ovules)
The stamen
The male reproductive part
- Composed of two separate parts: the anther (where pollen develops) and the filament
Sexual Reproduction in Flowers
- Pollen develops on the anther
- The flower is pollinated by bees, bats, hummingbirds etc.
- When the animal lands, the pollen is transferred from the animal to the stigma of the new flower
- The pollen grain travels down the style to the ovary where it fertilizes an ovule.
- The ovule becomes a seed and the ovary becomes fruit
Purpose of the Sepals
- To protect the budding flower as it grows
What is a gametophyte?
- A stage in the life cycle of seedless plants in which male and female organs develop and gametes (sex cells) are produced
- Gametes grow into sporophytes