Echinoderms are characterized by their spiny skin. What are these spines made of, and from what do they arise?

Q: What type of symmetry do the Echinoderms have? Do they have this type of symmetry their entire…

A: Echinoderms or spiny skinned animals belong to the phylum Echinodermata. They are marineand…

Q: Echinoderms have _____ symmetry as embryos and _____ symmetry as adults. a. radial; radial c.…

A: The group of eukaryotic, multicellular, and heterotrophic organisms is classified under the kingdom…

Q: How does the foot of a bivalve differ from that of snails or chitons?

A: Limpets or Notoacmea, Collisella are known as small, cone-shaped shells found on the rocks…

Q: What is the movement of lizard called?

A: Lizards are one of the common examples of reptiles. Most of the members are legless and quadrupedal…

Q: What symmetry is represented in echinoderms?

A: There are three types of symmetry- 1. Bilateral symmetry- means that the organism when cut…

Q: What are the features of trabeculae?

A: The human body is a well built machine in which all the organs coordinate together to make it work.…

Q: What is one characteristics that separates chordates from all other animals

A: Most chordates are creatures with backbones/ spines. These reach from little fish to whales. They…

Q: Barnacles can move as adults. True or False?

A: Step 1 - False . Barnacles do not move as adults but remain attached to their substratum ( termed as…

Q: Why is the madreporite of sea cucumbers internal instead of external like other echinoderms?

A: The madreporite  is made up of calcium carbonate and is covered in pores, looks grooved like some…

Q: What constellation of characteristics possessed by echinoderms occurs in no other phylum?

A: Echinoderms are an extremely ancient group of creatures reaching out rear to the Cambrian time…

Q: Do echinoderms have respiratory and circulatory systems?

A: Echinoderms have a calcareous endoskeleton with organ-system organization. They are triploblastic…

Q: How are the echinoderms significant to the marine environment? Relate some (at least two) of their…

A: Echinoderms -- Echinoderms are the members of the phylum Echinodermata . Animals have numerous…

Q: What characteristics is the ancestor of tetrapods thought to have had? Choose all that apply

A: Tetrapods  Tetrapods are the group of animals that have four legs. It the major group of animal and…

Q: What is a key characteristic of all arthropods?a. Six legsb. Pseudocoelomc. Mandiblesd. Exoskeleton

A: Arthropods are the largest phylum among animal kingdom. They are non chordates and do not contain…

Q: Scales of modern teleosts differ from the ancestral state in that they _____.     are thicker and…

A: They are the members of actinopterygians.  They are marked by the body rays on their fins.…

Q: How different are the swimming strategies in osteichthyes and in chondrichthyes? Why do sharks need…

A: The Chondrichthyes include rays, sharks, and skates that have a cartilaginous skeleton with calcium…

Q: Echinoderms have _____. a. triangular symmetry b. radial symmetry c. hexagonal symmetry d.…

A: A major group of marine animals are echinoderms. They are known for their spine like skin. These…

Q: Under which environments do echinoderms live?

A: Echinoderms are the animals that have no terrestrial or freshwater representatives. Echinoderms…

Q: Contrast the skeleton of an echinoderm with that of an arthropod.

A: The kingdom “Animalia” has several phyla (taxonomic rank: phylum). The organisms of this kingdom are…

Q: Compare and contrast the symmetry and body shape of the different classes of echinoderms. (Answers…

A: The phylum echinoderms is partitioned into five surviving classes: Asteroidea (ocean stars),…

Q: What are the basic morphological features of echinoderms?

A: The Echinodermata is a phylum in the kingdom Animalia and the members of this phylum is called…

Q: Which of the following structures is not a component of the watervascular system of an echinoderm?…

A: The group of multicellular and heterotrophic organisms belonging to the kingdom Animalia is called…

Q: What are three derived characters of echinoderms? Describe each.

A: The group of multicellular and heterotrophic organisms belonging to the kingdom Animalia is called…

Q: How many pairs of legs does a millipede have?

A: The millipede is not an insect because it has more than 6 legs. He has more than eight legs, so he…

Q: Chordates are grouped with starfish because both are protostomes, true or false?

A: The Correct answer would be False because starfish is neither chordate nor a protostome, it is…

Q: Which group of hadrosaurs had crests?

A: Hardradosaurids means bulky lizards. They were the family of herbivores dinasaurs. They were the…

Q: Urchins and sand dollars lack arms. How do they move?

A: Sea urchins and sand dollars are both belong to the phylum Cnidaria and they are fully marine.  Sand…

Q: What sarcoptergians or lungfish (if any) are related to amphibians?

A: Ans. In the superclass Tetrapoda ("four limbs"), the vertebrate community that has left the Sea for…

Q: Explain syncytial blastoderm?

A: In most of the insects, superficial cleavage occurs in which the mitosis occurs without cytokinesis,…

Q: We discussed the four primary.components of animals' body plans. Describe an echinoderm in terms of…

A: Echinoderms are the class of animal species which belongs to the Phylum Echinodermata  and these…

Q: Members of Chondrichthyes differ from members of Osteichthyes by having (a) ________. a. jaw b. bony…

A: Fishes are divided into three classes:- 1) CRANIATES that are jawless fishes. 2) GNATHOSTOMES that…

Q: What is the type of digestive system of echinoderms?

A: Jacob Klein (1738) introduced the name Echinodermata meaning Spiny Skinned Animals. Digestive tract…

Q: Why are external skeletons important for soft-bodied invertebrates?

A: Skeleton is the robust structure exhibited in the organism which act as scaffold for the body.…

Q: What character does the term rhizarian indicate about the forams and actinopods?

A: Rhizaria are an ill-defined, species-rich supergroup consists mostly of unicellular eukaryotes.…

Q: How are the echinoderms significant to the marine environment? Relate at least three of their…

A:

Q: What evidence suggests that ancestral echinoderms were sessile?

A: Phylum Echinoderms include organisms that are exclusively marine. The have spines that stick out…

Q: What are some representatives of the echinoderm phylum?

A: The representatives of phylum Echinodermata are known as echinoderms. 'Echinos' means spine and…

Q: What are various podomeres that make walking legs of the insects? Explain briefly

A: All the insects have their body segmented into the head, thorax and abdomen. The abdomen region…

Q: How do we know that echinoderms were derived from an ancestor with bilateral symmetry?

A: Echinoderms got this name from Greek word echinos means spiny and dermos  means skin. Phylum…

Q: What does the name “echinoderm” mean?

A: Echinoderms have the following characteristics- 1. They are triploblastic. 2. They are marine. 3.…

Q: Brachiopods superficially resemble bivalve molluscs, such as clams. How would you explain the…

A: brachiopods are marine invertebrates that comprises the lamp shells. They are places in phylum…

Q: Are snakes tetrapods? Explain.

A: Tetrapods includes land vertebrates with two pairs of pentadactyl limbs, cornified skin and lungs.…

Q: What type of skeletal system do echinoderms have?

A: Echinoderms have the following characteristics- 1. They are radially symmetrical. 2. They are…

Q: What is the embryonic characteristic that evolutionarily makes echinoderms proximal to chordates?

A: Echinoderms are the marine organisms that belong to the kingdom Animalia. They are triploblastic…

Q: Do echinoderms present internal or external fecundation? Is there sex division among individuals?

A: Fecundation, also known as fertilization involves the physical union of the male and female gamete…

Q: How are tunicates and lancelets different than most other chordates?

A: All the organism of phylum Chordata has a structure called notochord at some point. During the…

Q: What are similarities exist among Lycopods and horsetails? What are some of the differences

A: The kingdom Plantae includes land plants and green algae. Based on the presence or absence of a…

Q: how does a light-colored exoskeleton make beetles better adapted to the environment?

A: Introduction Exoskeleton:- It is a rigid or articulated envelope that supports and protects the soft…

Q: Distinguish between ostracoderms and placoderms. What important evolutionary characters first…

A: Vertebrates comprise all species of animals within the subphylum Vertebrata. A vertebrate have a…

Classification of Marine Organisms

Classification is a way of categorizing organisms that enables an easy process of identification of such organisms. All living things are classified by grouping them under specific categories. The grouping is done based on the close relativeness of the organisms. The classification tool requires knowledge of characteristics, differences, and similarities between different organisms.