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What organism is asymmetrical?
Asymmetry, or the absence of symmetry, most often occurs in sessile organisms or in slow-moving forms such as amebas .
What is a sessile leaf?
sessile means without stalk
What is benthic sessile?
Benthic means bottom dwelling, and sessile means non-moving.
What do you call the leaf without a petiole?
A leaf without a petiole is called a sessile leaf.
What is the opposite of a sessile?
Vagile.
What organism is asymmetrical?
Asymmetry, or the absence of symmetry, most often occurs in sessile organisms or in slow-moving forms such as amebas .
What kingdoms are sessile?
The kingdoms of the sessile organisms are mainly two. They are plantae and fungi depending on the particular organism of the sessile. .
Are sessile organisms part of the benthos?
yes
Organisms that are permanently attached to a surface are called what?
Organisms that are permanently attached to a surface, instead of being able to move freely, are called sessile. Plants, mussels and barnacles are examples of sessile organisms.
Sessile animals are what kind of animals?
Sessile organisms are immobile. So. I can't think of any animals. But plants are sessile. Edit: Corals (related to anenomes) and sponges are good examples of sessile animals, the latter has a motile larval stage before it settles on a substrate and becomes sessile.
How does type of symmetry relate to characteristics of each animal pylum?
Body symmetry is an adaptation to the habit of the animal. For example:Radial symmetry is advantageous in sessile or sedentary and more or less passively drifting animals (Phyla Cnideria and Ctenophora), because it enables them to develop appendages all around the mouth for capturing prey or gathering food from all sides. Their sensory and nervous coordination is also concentrated around mouth.Majority of animal phyla exhibit Bilateral symmetry.This type of symmetry is said to have evolved in those ancestral forms which started moving on ocean floor. A crawling animal is expected to encounter food with the advancing end. So mouth developed at the anterior end. The sensory organs and coordinating brain also developed near mouth at the front end, enabling the animals to sense or recognize edible or non-edible organisms.
Characteristics of a echinoderm?
Deuterostome embryo developmentSecondary radial symmetry: larvae have bilateral symmetry (radial symmetry thought to have evolved from sessile forms)Five radial parts; sea urchins and cucumbers by folding "arms" upwards and fusing their edges; sea cucumbers lay on "side" and developed pseudo-bilateral symmetry, i.e. have distinct upper and lower sideEndoskeleton: calcite plates = ossicles, covered by epidermis, may be single plates (flexible body) or fused (solid shell, sea urchin)Spines on calcite plates give "spiny skin" (phylum name!) sea urchin spines are endoskeleton and covered by thin skin!
Selective advantage of radial symmetry for sessile and free floating animals?
Radial symmetry is selectively advantageous because the organisms approach their environment from all sides equally. In addition to sessile animals, radial symmetry can also be found in some other animals and plants.
Organisms that spend their entire adult lives attached to one spot are said to be?
sessile
What are some examples of sessile plants?
Coral, oysters, and barnacles are all examples of sessile organisms.
What are organisms in the ocean?
plankton, mammals, fish, crustaceans, sessile animals, microorganisms and other things
Characteristic of echinoderm?
Deuterostome embryo developmentSecondary radial symmetry: larvae have bilateral symmetry (radial symmetry thought to have evolved from sessile forms)Five radial parts; sea urchins and cucumbers by folding "arms" upwards and fusing their edges; sea cucumbers lay on "side" and developed pseudo-bilateral symmetry, i.e. have distinct upper and lower sideEndoskeleton: calcite plates = ossicles, covered by epidermis, may be single plates (flexible body) or fused (solid shell, sea urchin)Spines on calcite plates give "spiny skin" (phylum name!) sea urchin spines are endoskeleton and covered by thin skin!
