Is Navicula a phytoplankton?

Is Navicula a phytoplankton?

Together with other diatoms, Navicula is one of the most common types of phytoplankton. … Additionally, phytoplankton is an indispensable food source for zooplankton and many other organisms higher up on the food chain.

What does Navicula look like?

Navicula is a raphed, pennate diatom with boat-shaped cells that may exist singly or in ribbons. The valves are symmetrical both apically and transapically, and may have rounded, acute, or capitate ends. The central area is often distinctly expanded.

How do Navicula move?

Mobility. Navicula diatoms are known for their ability to creep about on each other and on hard surfaces such as microscope slides. It is thought that around the outside of the navicula’s shell is a girdle of protoplasm that can flow and thus act as a tank track.

Is Navicula photosynthetic?

The genus Navicula is a genus of boat-shaped, single cell, photosynthetic alga. It is a pennate diatom that has a silica skeleton (frustule). These microscopic unicellular plants are important biomass and oxygen producers.

Is navicula a marine diatom?

Marine diatom, Navicula sp.

What are navicula cells?

Navicular cell is a boat-shaped benign epithelial cell seen in Pap smear. … Navicular cells have folded edges, with a thickened outer rim of cytoplasm and an eccentric nucleus. They contain abundant glycogen in the cytoplasm, giving it a central yellow halo.

Where is navicula found?

Navicula spp.

Harmful effects None known
Habitat CloseBenthicThe ecological zone at the bottom of a body of water. Benthic, sometimes found in Plankton Organisms that drift at the mercy of the currents. plankton
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What would we call a phytoplankton?

Phytoplankton, also known as microalgae, are similar to terrestrial plants in that they contain chlorophyll and require sunlight in order to live and grow. … The two main classes of phytoplankton are dinoflagellates and diatoms.

What type of bacteria is oscillatoria and what is its purpose?

It occur in fresh water ponds. Oscillatoria uses photosynthesis to survive and reproduce. Each filament of oscillatoria consists of trichome which is made up of rows of cells. …

Domain: Bacteria
Phylum: Cyanobacteria
Class: Cyanophyceae
Order: Oscillatoriales

Which of the following organisms move about by means of Pseudopodia?

protists. cilia, pseudopodia are responsible for amoeboid movement, a sliding or crawlinglike form of locomotion. The formation of cytoplasmic projections, or pseudopodia, on the forward edge of the cell, pulling the cell along, is characteristic of the microscopic unicellular protozoans known as amoebas.

What is plankton SpongeBob?

Plankton, more commonly known as Plankton (born August 21, 1961), is one of the ten main characters of the SpongeBob SquarePants franchise. He is a planktonic copepod who runs the Chum Bucket restaurant alongside Karen, a waterproof computer who is his sidekick and wife.

Is plankton a fish?

Plankton are usually microscopic, often less than one inch in length, but they also include larger species like some crustaceans and jellyfish. … Zooplankton include microscopic animals (krill, sea snails, pelagic worms, etc.), the young of larger invertebrates and fish, and weak swimmers like jellyfish.

What kind of sea creature is plankton?

Plankton includes plants and animals that float along at the mercy of the sea’s tides and currents. Their name comes from the Greek meaning drifter or wanderer. There are two types of plankton: tiny plants–called phytoplankton, and weak-swimming animals–called zooplankton.

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Is diatom a seaweed?

Some algae, the diatoms, are single-celled. Others, such as seaweed, are multicellular (see Figure below). Diatoms are single-celled algae. … Classification of Algae.

Type of Algae Origin of Chloroplast Type of Chloroplast
Dinoflagellates red algae three membranes, chlorophyll like red algae

What is restorative process in Bacillariophyceae?

During this process, auxospore is formed in both the groups. During cell division, those cells become reduced in size, are able to regain their normal size through the formation of auxospore, so it is a restorative process rather than multiplication.