Table of Contents
Which of these is a characteristic of sponges?
Sponges are similar to other animals in that they are multicellular, heterotrophic, lack cell walls and produce sperm cells. Unlike other animals, they lack true tissues and organs. Some of them are radially symmetrical, but most are asymmetrical.
What feature is used to classify sponge as a Parazoan?
What feature is used to classify a sponge as a Parazoan? One of the key features of the lophotrochozoans is that they have a band of cilia during their larval stage.
What is the repetition of body parts along the length of the body called quizlet?
True Segmentation, serial repetition of similar body segments along the longitudinal axis of the body.
Why cant amphibians tolerate their skin being covered with a foreign substance?
Why can’t amphibians tolerate their skin being covered with a foreign substance? Amphibians have small lungs and use their skin for gas exchange; they suffocate when the skin is covered with fungal growth.
What does a sponge do?
A sponge is a tool or cleaning aid made of soft, porous material. Typically used for cleaning impervious surfaces, sponges are especially good at absorbing water and water-based solutions.
What senses do sponges possess?
Sponges possess no senses. Sponge skeleton has a soft skeleton made of collagen. No sponges do not have tissues or organs. All animals like the sponge are eukaryotic meaning that their cells have a nucleus.
Why are sponges considered as Parazoa reasoning answer?
Sponge Parazoa Sponge parazoans are unique invertebrate animals characterized by porous bodies. This interesting feature allows a sponge to filter food and nutrients from water as it passes through its pores.
What kingdom do sponges belong to?
Sponges belong to the Kingdom Animalia.
How do scientists identify the species of sponges in the most accurate way?
The identification of sponges is very difficult due to their unique morphological traits and intraspecific variability in shape and colour. Therefore, proper identification often requires collection and microscopic examination of their skeleton.
Which statement is inconsistent with invertebrate animals?
Which statement is inconsistent with invertebrate animals? Invertebrates lack a nervous system. The vast majority of animal species are invertebrates. Many invertebrate species live in a marine environment.
What is the repetition of body parts along the length of the body called?
In biology, metamerism is the phenomenon of having a linear series of body segments fundamentally similar in structure, though not all such structures are entirely alike in any single life form because some of them perform special functions. In animals, metameric segments are referred to as somites or metameres.
When making bread you first proof the yeast by mixing it with sugar in lukewarm water Assuming that the yeast are alive what happens next and why?
When making bread, you first “proof” the yeast by mixing it with sugar in lukewarm water. Assuming that the yeast are alive, what happens next and why? Bubbles form as the yeast ferment the sugar and release carbon dioxide.
Which species is most responsible for the spread of Bd to amphibians around the world?
A captive Oriental fire-bellied toad (Bombina orientalis) imported into Europe from South Korea. The global pet trade is partially to blame for the spread of Bd, a deadly fungus that can infect nearly 700 species of amphibians.
Does chytrid fungus affect all amphibians?
Only the amphibian chytrid fungus is known to infect vertebrate species. Individual frogs are thought to contract the disease when their skin comes into contact with water containing spores from infected animals.
Which of the following correctly lists the classification of living organisms from least inclusive to most inclusive?
Classifying organisms Biological classification uses taxonomic ranks, including among others (in order from most inclusive to least inclusive): Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species, and Strain.
How do sponges benefit humans?
Sea sponges are very popular in the health and beauty field. They can be used for cleaning an array of surfaces and have better water retention than that of the artificial sponge. Most popular uses include car care, household cleaning, makeup application and removal, skin exfoliant for when bathing, and personal care.
How do sponges protect themselves?
Sponges do not have nervous systems that would allow them to respond to changes in their environment. However, many sponges protect themselves by producing toxins that make them unpalatable or poisonous to potential predators.
How do sponges move?
The layer that lines the central cavity is made of collar cells. Collar cells have whiplike structures that beat back and forth to move water through the sponge. Collar cells also strain food from the water. The collar cells act as the sponge’s digestive system.
Do sponges have cell communication?
Their mastery of this complex behaviour is all the more remarkable because they have no brain, nor even a single neuron to their name. A study published on 4 November in Science now reveals that sponges use an intricate cell communication system to regulate their feeding and to potentially weed out invading bacteria1.
How do sponges respond to their environment?
And yet despite not having a nervous system, sponges are able to respond to their environment by changing the canal sizes in their filter-feeding system, in an action called the “inflation-contraction response.” It’s basically akin to what we do when we sneeze.
Can a sponge think?
Sponges have no nervous system or organs like most animals do. This means they don’t have eyes, ears or the ability to physically feel anything. Sponges have no nerves or brain, so they lack any ability to cognitively control their movement.
Why are sponges considered as protozoa?
Furthermore, sponges have a porous skeleton of silica or calcium carbonate while protozoa live in single or aggregated colonies. Moreover, sponges are sessile animals while protozoa are either free-living or parasitic. Sponges and protozoa are two types of primitive animals with a cellular level of organization.
Why are sponges not considered eumetazoans?
Terms in this set (93) sponge bodies different from the bodies of eumetazoans?) They have no true tissues or bilateral symmetry. Where do sponges live?.
Which cells are absent in sponges?
Nerve cells are the neurons that are involved in transmitting impulse across the brain. B. Gland cells secrete an adhesive substance and provide a means of attachment for the animal. C. Phylum porifera is the only phylum in animal kingdom in which nerve cells are absent. So, the correct answer is ‘Nerve cell’.
