Tag: organisation of the organism

Auxospore. In certain species of diatoms, auxospores are specialised cells that are produced at key stages in their cell cycle or life history.  Auxospores can also play a role in sexual reproduction in diatoms, and may be formed after haploid gametes fuse to form a diploid zygote.

The animal cells are the eukaryotic cells which are composed of well-developed cell organelles. The animal cell can be differentiated from the plant cell due to the absence of certain structures in the cell. The cell wall is absent in the animal's cells and they have only the cell membrane. The vacuole is present in the plant cell for storage and absent in the animal cells. 

The main difference between an animal cell and a plant cell is that plant cells have a cell wall and animal cell lacks the cell wall. The cell wall which is made up of cellulose gives the plant cell rigidity resulting in a fixed, rectangular shape. Animal cells lack the rigidity hence, they tend to have a round and irregular shape. Animal cells tend to vary greatly in appearance. The cell wall allows high pressure to build inside of the plant cell without bursting. Due to this, the plant cell is able to accept large amounts of liquid through osmosis without bursting. Animal cells, which only have a thin membrane restricting access to the cell, tend to burst if they absorb too much extra water.

The cell wall is absent in an animal cell. The plasma membrane is a biological membrane that separates the interior of animal cells from the outside environment. The basic function of the plasma membrane is to protect the cell from its surroundings. The cell membrane is also known as plasma membrane.

The plants and the animal cells are the eukaryotic cells which are composed of well-developed cell organelles. The animal cell can be differentiated from the plant cell due to the absence of certain structures in the cell. The cell wall is absent in the animal's cells and they have only the cell membrane.