Reproduction In Algae
1960s - Reproduction In Algae - Types of Algae
Dr. Harold Bold provides an overview of the lesson on algae. Microscopic views of Euglena, Chlamydomonas, Volvox, and Spirogyra. Dr. Bold holds a small jar that contain Euglena.
1960s - Reproduction In Algae - Euglena
Dr. Harold Bold, using a pointer, shows a diagram of what Euglena would look like under a microscope; pointing out its flagellum, chloroplasts, paramylum, nucleus, and contractile vacuole.
1960s - Reproduction In Algae - Euglena
Dr. Harold Bold, using a pointer, continues explaining the diagram of a Euglena would look like under a microscope; pointing out its gullet and stigma, or eyespot and area of light perception.
1960s - Reproduction In Algae - Euglena
Clear tape with bold, black "Euglena" written on it, is removed by a hand, leaving an imprint of the letters on the green/yellow container. Dr. Harold Bold (o/s) explaining the function of the stigma.
1960s - Reproduction In Algae - Euglena
Dr. Harold Bold, using a pointer, continues discussing the stigma of the Euglena, positive phototaxis, then its behavior in "unfavorable conditions", and reproduction. Microscopic view of Euglena.
1960s - Reproduction In Algae - Chlamydomonas
Dr. Harold Bold, using a pointer, discusses the etymology behind Chlamydomonas.
1960s - Reproduction In Algae - Chlamydomonas
Microscopic views of Chlamydomonas, cloaked in a cellulose membrane; Dr. Harold Bold (o/s) provides background on where it grows, size, and notes the presence of two flagella.
1960s - Reproduction In Algae - Chlamydomonas
Dr. Harold Bold notes the Chlamydomonas forms true starch. Dr. Bold states that the algae has two components to its reproductive cycle: asexual and sexual. He explains the asexual process first.
1960s - Reproduction In Algae - Chlamydomonas
Dr. Harold Bold, using a pointer, explains the sexual reproductive process of Chlamydomonas and the factors needed before reproduction can take place. Microscopic view of Chlamydomonas.
1960s - Reproduction In Algae - Chlamydomonas
Dr. Harold Bold, using a pointer, explains the sexual reproductive process of Chlamydomonas leading to cell union forming a diploid nucleus and the resulting cell is called a zygote.
1960s - Reproduction In Algae - Chlamydomonas
Microscopic view of Chlamydomonas zygotes in dormancy. Dr. Harold Bold, using a pointer, explains the sexual reproductive process of Chlamydomonas after dormancy.
1960s - Reproduction In Algae - Chlamydomonas
Dr. Harold Bold, using a pointer, continues explaining the sexual reproductive process of Chlamydomonas at the point of meiosis, reducing the chromosomes and segregated genes into monoploid cells.
1960s - Reproduction In Algae - Chlamydomonas
Dr. Harold Bold, using a pointer, summarizes the asexual and sexual reproductive capabilities of Chlamydomonas.
1960s - Reproduction In Algae - Spirogyra
Dr. Harold Bold holds a model representing Spirogyra, providing an explanation for its shape, then takes a small jar and uses forceps to extract fresh Spirogyra. Microscopic view of Spirogyra cells.
1960s - Reproduction In Algae - Spirogyra
Dr. Harold Bold uses a diagram to explain the asexual and sexual reproduction of Spirogyra, beginning with the asexual process which involves either death or separation of cells in joined regions.
1960s - Reproduction In Algae - Spirogyra
Dr. Harold Bold uses a diagram to explain the sexual reproduction of Spirogyra, describing the cellular union.
1960s - Reproduction In Algae - Spirogyra
Dr. Harold Bold uses a diagram to continue explaining the sexual reproduction of Spirogyra, explaining how zygotes are created. Microscopic view of Spirogyra undergoing sexual reproduction.
1960s - Reproduction In Algae - Spirogyra
Dr. Harold Bold uses a diagram to continue explaining the sexual reproduction of Spirogyra as zygotes through the process of germination and meiosis. He summarizes asexual and sexual reproduction.