What kingdom is Pinnularia in?

ChromistaPinnularia / KingdomChromista is a biological kingdom consisting of single-celled and multicellular eukaryotic species that share similar features in their photosynthetic organelles. It includes all protists whose plastids contain chlorophyll c, such as some algae, diatoms, oomycetes, and protozoans. Wikipedia

What domain do diatoms belong to?

EukaryoteDiatom / DomainEukaryotes are organisms whose cells have a nucleus enclosed within a nuclear envelope. Eukaryotes belong to the domain Eukaryota or Eukarya; their name comes from the Greek εὖ and κάρυον. The domain Eukaryota makes up one of the three domains of life; bacteria and archaea make up the other two domains. Wikipedia

What is a distinctive feature of diatoms?

What is a distinctive feature of diatoms? Have flagella and frustules, which are outer cell walls of crystallized silica; their fossilized remains are used to produce diatomaceous earth, which has a range of uses such as filtration and insulation. Additionally, diatoms can reproduce sexually or asexually.

What is theca in Pinnularia?

External structure Pinnularia are elongated elliptical unicellular organisms. Their cell walls are composed chiefly of pectic substances on a rigid silica framework. Their walls are composed of two halves called thecae (or less formally, valves.) These halves overlap like a Petri dish and its cover.

What is the scientific name of Pinnularia?

PinnulariaPinnularia / Scientific name

Is diatoms autotrophic or heterotrophic?

autotrophic
Diatoms are unicellular, colonial, or filamentous autotrophic organisms that live in marine and freshwater habitats.

What are the characteristics of diatoms?

Diatoms. Diatoms are microscopic unicellular algae that have a silica shell that is resistant to acids, heat, or body decomposition. They live in colonies, grow in abundance in fresh and salt waters, and their “skeletons” are widespread in soils.

How many species of diatoms are there?

Estimations of the numbers of diatom species vary widely, from a low of 1,800 planktonic species (12) to a high of 200,000 (13). Most recent estimates range from 12,000 to 30,000 species (14, 15).

What is Pennales in biology?

Pennales. The order Pennales is a traditional subdivision of the heterokont algae known as diatoms. The order is named for the shape of the cell walls (or valves or frustules) of pennate diatoms, which are elongated in valve view. The valves may be linear or oval in shape, and usually bear bilaterally symmetrical ornamental patterns.

What is the order Pennales?

Jump to navigation Jump to search. An order of bilaterally symmetrical diatoms. The order Pennales is a traditional subdivision of the heterokont algae known as diatoms. The order is named for the shape of the cell walls (or valves or frustules) of pennate diatoms, which are elongated in valve view.

What are the two types of pennate diatoms?

Pennales. In some taxonomic schemes, the pennate diatoms are divided into two groups: pennate diatoms without a raphe, known as araphids (order Fragilariophyceae), and pennate diatoms with a raphe, known as raphids (order Bacillariophyceae).