Which of the following is an example of Mesokaryotic cell?
Table of Contents
Which of the following is an example of Mesokaryotic cell?
1 Answer. Dinoflagellates, marine alga ( Gymnodium, Peridinium ), protozoa (Noctiulea) and some planktons are a few example of mesokaryotic organisms.
What are Mesokaryotic cells?
A mesokaryotic (meso= in between, karyon= nucleus) cell shows intermediate resemblance to both eukaryotic and prokaryotic cell. It contains well-developed nucleus but it undergoes cell division by amitosis (because the mitotic spindle is not formed).
What is Mesokaryotic algae?
The cells of certain algae like Gymnodinium, Peridinium, etc., and protozoa like Noctiulea are the example of such cell. {Those types of cells that are intermediate between prokaryotic and eukaryotic type are called mesokaryotic cells.}
What kinds of organisms contain prokaryotic cells?
Only the single-celled organisms of the domains Bacteria and Archaea are classified as prokaryotes—pro means before and kary means nucleus. Animals, plants, fungi, and protists are all eukaryotes—eu means true—and are made up of eukaryotic cells.
Which algal group is referred as Mesokaryotes?
The dinoflagellate nucleus was termed ‘mesokaryotic’ by Dodge (1966), due to its possession of intermediate characteristics between the coiled DNA areas of prokaryotic bacteria and the well-defined eukaryotic nucleus.
What does Mesokaryon mean?
Mesokaryon is a nucleus with a condensed chromosome. It is composed of ‘meso’ and ‘karyon’ which means ‘middle’ and ‘nucleus’ respectively. It is a special type of nucleus found only in dinoflagellates which consist of condensed chromosomes.
Which of the following features are related to Mesokaryotic cell a nucleus is present in dinoflagellates C histone protein is absent D all the above?
So the correct answer is ‘presence of histone proteins’.
Are viruses Akaryotes?
Akaryocytes, also known as akaryotes or acaryotes, are cells without a nucleus. The most common type of akaryocytes are viruses.
Who discovered Mesokaryotic cell?
On the basis of nuclear organization, Dougherty (1957) classified cells into the two types i.e. Prokaryotic cell and Eukaryotic cell. Later, Dodge (1966) proposed a third type of cell called Mesokayotic cell, which can be placed in between the prokaryotic and eukaryotic cells. 1.
Is an organism that makes its own food?
An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. Because autotrophs produce their own food, they are sometimes called producers. Plants are the most familiar type of autotroph, but there are many different kinds of autotrophic organisms.
What are dinoflagellates made of?
Dinoflagellates are unicellular flagellated algae belonging to the phylum Pyrrophyta. Their cells contain chlorophylls a and c. They occur in both freshwater and marine habitats. A typical representative is Gonyaulax (also referred as red dinoflagellates).
How do dinoflagellates feed?
Many dinoflagellates are photosynthetic, manufacturing their own food using the energy from sunlight, and providing a food source for other organisms. The photosynthetic dinoflagellates are important primary producers in coastal waters.
Which of the following features are related to Mesokaryotic cell?
Mesokaryotic cell has the following features:
- It has double nuclear membrane.
- Spindle formation doesn’t take place.
- No histone proteins present.
- Chromosomes can either be condensed or dispersed in most of the cases.
How do dinoflagellates obtain their nourishment?
Photosynthetic dinoflagellates have yellowish or brownish plastids (pigment-containing bodies) and may store food in the form of starches, starchlike compounds, or oils.
What are Akaryotes in biology?
Akaryocytes, also known as akaryotes or acaryotes, are cells without a nucleus. The most common type of akaryocytes are viruses. The name is derived from the Greek prefix “a-“, meaning “without” and the Greek “karyo-“, meaning “nut” or “kernel”.
What is Cytostome in biology?
A cytostome (from cyto-, cell and stome-, mouth) or cell mouth is a part of a cell specialized for phagocytosis, usually in the form of a microtubule-supported funnel or groove. Food is directed into the cytostome, and sealed into vacuoles.
What are examples of autotrophs?
Autotrophs use inorganic material to produce food through either a process known as photosynthesis or chemosynthesis. Examples of autotrophs include plants, algae, plankton and bacteria. The food chain is comprised of producers, primary consumers, secondary consumers and tertiary consumers.
