Do Cyanobacteria haw chloroplasts? Why or why not? What ecological roles are per

Question

Do Cyanobacteria haw chloroplasts? Why or why not? What ecological roles are performed by cyanobacteria? How are cyanobacteria different from algae? How are they similar? The term algae apply to about 10 phyla of predominantly photosynthetic species. Complete procedures 25.1 -25.10 as a survey of algal life. Work your way through the procedure* and pay attention to the similarities and differences between algal groups. Answer the questions below. Are algae prokaryotic or eukaryotic? Do algae have chloroplasts? What Is? What is zoogamy? Brown algae have a stem, holdfast and Wade. How does this compare to land plants? Algae you examined were a variety of colors, yet all contain chlorophyll. How can this be?1? What adaptations do algae have which allow them to be so successful in marine environments? Despite having the common feature of photosynthesis, "algae* do not form a monophyletic group, but are polyphyletic. What does this mean? Draw a picture to illustrate your answer.

Explanation / Answer

Answer of question 2 on cyanobacteria : Cyanobacteria are important in the nitrogen cycle. Cyanobacteria are very important organisms for the health and growth of many plants. They are one of very few groups of organisms that can convert inert atmospheric nitrogen into an organic form, such as nitrate or ammonia. Cyanobacteria are sometimes considered algae, but they are actually bacteria (prokaryotic), where the term "algae" is now reserved for eukaryotic organisms. They also derive their energy through photosynthesis(smililarity), but lack a nucleus or membrane bound organelles, like chloroplasts.

Answer of Questions on Algae :

1) Algae are eukaryotic organisms with proper membrane bound organelles.

2) Algae contain chloroplast. It is the organelle which helps in photosynthesis. Also remember that algae are eukaryotic, so they will have membrane bound organelles such as chloroplasts.

3) Isogamy is a form of sexual reproduction that involves gametes of similar morphology (similar shape and size), differing in general only in allele expression in one or more mating-type regions. Oogamy is the familiar form of sexual reproduction. It is a form of anisogamy (heterogamy) in which the female gamete (e.g. egg cell) is significantly larger than the male gamete and is non-motile. The male gametes are typically highly motile spermatozoa competing for the fertilization of the immotile egg.

4) The brown algae are multicellular and have differentiated structures(holdfast, stem and blade) that, in some species, bear a superficial resemblance to the roots, stalks, and leaves of true plants. These structures, however, are quite different internally.

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