Question

σναι αισιο υ Zoom Add Page οιιιοιιουει, αιιαι ιιαιι δεν διαποιο class to complete exercises 25 & 26. Body Exercise 25 Survey of Protists: The Autotrophic ALGAE Procedure 25.1 Unicellular Green Algae Chlamydomonas (view prepared slide) True or False? Iffalse, correct the statement Chlamydomonas are unicellular photosynthetic motile algae that are prokaryotes. Style Font Calibri What is the name of the sexual reproduction process in these algae? Procedure 25.3 Filamentous Green Algae Spirogyra & Cladophora (view prepared slides of both) How does Spirogyra reproduce sexually? Q14a How is Cladophora morphologically similar to Spirogyra? Character Style Text Color What's special about Cladophora's life cycle? Alignment Procedure 25.4 Colonial Green Algae Volvox (make wet mount & view prepared slide) is cogamy sexual or asexual reproduction? 15What are the tiny spheres inside the larger Volvox sphere? 05c How do the tiny spheres get out? Spacing Procedure 25.5 Brown Algae (See in a specimen display) Are all els microscopic? Bullets & Lists Procedure 25.7 Po honie, a Marine Red Algne & Porphyra, a red algae (view prepared side of it)

Answer 1

25.1 — False. Chlamydomonas is a unicellular green algae. It differs from unicellular, photosynthetic bacteria because it is eukaryotic.

Sexual reproduction in these algae are isogamous and anisogamous or oogamous.

25.3 — Sexual reproduction occurs by a process known as conjugation, in which cells of two filaments lying side by side are joined by outgrowths called conjugation tubes.
Cladophora and spirogyra are green filamentous algae. They are both long, rectangular cells that form filamentous colonies.Both occur in freshwater ponds and lakes.The plant bodiesa are unbranched filamentous thallus.

The fusing gametes are of same size and thus the process of sexual reproduction is isogamous. The gametes from two different filaments fuse in pairs. Hence Cladophora is heterothallic.
25.4 — Oogamy is sexual reproduction.
The tiny spheres are tge daughter colonies.

Movement Each volvox cell has two flagella. ... Reproduction Daughter colonies are small, dark green balls inside the volvox colony. When the daughter colonies mature, the parent ball bursts open and releases the daughter colonies.

25.7 — Red algae.The specific algae are from the Gelidium and Gracilaria genera.

Agar is a gelatinous substance used as a natural vegetarian gelatin replacement in icings, glazes, processed cheeses, jelly and sweets. Carrageenan is a polysaccharide used in desserts, ice cream, sauces, beer, pates, processed meat and soy milk. 25.8 — Movement is by water currents and wind-induced water turbulence.

Diatomaceous earth is made from the fossilized remains of tiny, aquatic organisms called diatoms.

26.8 — Slime molds are eukaryotic members belonging to the kingdom Protista.

25.9 — Dinoflagellates are unicellular and possess two dissimilar flagella arising from the ventral cell side (dinokont flagellation).

25.10 — Structurally, they do not have a cell wall. Instead, they have a thick outer covering, known as a pellicle, that is composed of protein and gives them both strength and flexibility.

The eyespot allows Euglena to locate sources of light to carry out photosynthesis to make food.

The point of the contractile vacuole is to pump water out of the cell through a process called osmoregulation, the regulation of osmotic pressure.

26.1 — Solute concentration in the amoeba is higher than the concentration in the environment and water diffuses into the cell.

Pseudopods are actually extensions of the cytoplasm, or the thick liquid that is inside organisms like amoeba. The organism can change the shape of the pseudopod, making it move, appear, and disappear. The pseudopods are used in movement and as a tool to capture prey.

26.3 — Other parasite species and sub-species of the Trypanosoma genus are pathogenic to animals and cause animal trypanosomiasis in wild and domestic animals. In cattle, the disease is called Nagana. ... Animals can also be infected with T.b. gambiense and probably act as a reservoir to a lesser extent.
26.4 and 26.5 — Asexual reproduction.

26.6 — Avoid predation and to move to get food by pushing its contractile stalk to push the cell body as far as possible from the substrate and from others and then beats its cilia to capture food particles.It makes a water current to capture food.

26.7 — Malaria.

Located in the infected blood cells.