Question

A student observed polluted water bodies. he found green gelatinous organisms which

spread the all over the water. He studied some of these organisms under microscope.

1 What are these green gelatinous organisms?

2. What is heterocyst?

3. write any two features of the cyanobacteria.

4. Write any one similarity between cyanobacteria and plants.

5. What is the other name of cyanobacteria​

Answer 1

Answer:

blue-green algaeIn blue-green algae

…that have specialized cells called heterocysts. The heterocysts are thick-walled cell inclusions that are impermeable to oxygen; they provide the anaerobic (oxygen-free) environment necessary for the operation of the nitrogen-fixing enzymes. In Southeast Asia, nitrogen-fixing cyanobacteria often are grown in rice paddies, thereby eliminating the need to apply nitrogen fertilizers

Answer 2

Answer:

1) Nostoc is a dark blue-green, jelly-like organism sometimes found in soggy home lawns. ... Instead, Nostoc is a cyanobacterium. Cyanobacteria are like bacteria in that they are microscopic, single-celled organisms that contain no cell nucleus. Nostoc cyanobacteria form single-celled threadlike structures called filaments.

2) heterocyst is a differentiated cyanobacterial cell that carries out nitrogen fixation

3) They include glycogen granules, cyanophycin granules, carboxysomes (polyhedral bodies), polyphosphate (volutin) granules, and gas vacuoles. Heterocysts, akinetes, and hormogonia are some of the specialized cells and differentiation in Cyanobacteria

4) Photosynthesis. Cyanobacteria are similar to plants in that they both perform oxygenic photosynthesis. This means that they both make their own food from carbon dioxide by using energy from the sun and water as an electron donor and releasing oxygen as a byproduct. ... Cyanobacteria don't have chloroplasts.

5) blue-green algae

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