Which type of circulatory system do molluscs have? How can it be compared to the respiratory system of annelids?

Which type of circulatory system do molluscs have? How can it be compared to the respiratory system of annelids?
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Molluscs, with the exception of cephalopods, have an open circulatory system, i.e., the blood circulates within vessels, from the heart, but it also fills open lacunas or cavities. In annelids the circulatory system is closed, i.e., the blood circulates only inside blood vessels. Mollusca - Image Diversity: mollusc circulatory system
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A closed circulatory system is one in which blood circulates only inside blood vessels. For this reason the blood pressure is higher in animals with closed circulatory system. The cellularity of the blood is also higher with many specific blood cells. The closed circulatory system is a feature of annelids, cephalopod molluscs and vertebrates. The Circulatory System - Image Diversity: closed circulatory system

Description : A closed circulatory system is one in which blood circulates only inside blood vessels. For this reason the blood pressure is higher in animals with closed circulatory system. The ... annelids, cephalopod molluscs and vertebrates. The Circulatory System - Image Diversity: closed circulatory system

Last Answer : What are the advantages of the closed circulatory system over the open circulatory system?

Mollusc identity card. How are molluscs characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Description : Mollusc identity card. How are molluscs characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Last Answer : Examples of representing beings: snails, sea slugs, octopuses, squids, mussels, oysters. Basic morphology: soft body, with or without calcareous shell. Type of symmetry: bilateral. ... system: ganglial, advanced cephalization in cephalopods. Types of reproduction: sexual. Phylum Echinodermata Review

Assertion : Annelids, arthropods, and molluscs are protostomial coelomates . Reason : All the three phyla include members with bilateral symmetry and

Description : Assertion : Annelids, arthropods, and molluscs are protostomial coelomates . Reason : All the three phyla include members with bilateral symmetry and

Last Answer : Assertion : Annelids, arthropods, and molluscs are protostomial coelomates . Reason : All the three ... . If both Assertion and Reason are false.

Are mollusc metameric beings? Exclusively analyzing this feature could it be said that molluscs are evolutionarily proximal to nematodes or to annelids?

Description : Are mollusc metameric beings? Exclusively analyzing this feature could it be said that molluscs are evolutionarily proximal to nematodes or to annelids?

Last Answer : In molluscs there is not a body divided into segments. Considering just this feature it could be said that evolutionarily they are more proximal to nematodes than to annelids.

Solenocytes are the main excretory structures in (a) echinodermates (b) platyhelminthes (c) annelids (d) molluscs.

Description : Solenocytes are the main excretory structures in (a) echinodermates (b) platyhelminthes (c) annelids (d) molluscs.

Last Answer : (b) platyhelminthes

What is the type of circulatory system present in annelids?

Description : What is the type of circulatory system present in annelids?

Last Answer : In beings of the phylum Annelida the circulatory system is closed, i.e., blood circulation takes place only within specialized vessels.

Open circulatory system is the one in which blood does not circulate only inside blood vessels but it also falls in cavities that irrigate tissues. In the open circulatory system the blood pressure is low and generally the blood (called hemolymph) has low cellularity. Arthropods, molluscs (the cephalopods are exception) and protochordates have open circulatory system. The Circulatory System - Image Diversity: open circulatory system

Description : Open circulatory system is the one in which blood does not circulate only inside blood vessels but it also falls in cavities that irrigate tissues. In the open circulatory system ... and protochordates have open circulatory system. The Circulatory System - Image Diversity: open circulatory system

Last Answer : What is a closed circulatory system?

How is the respiratory system in aquatic molluscs characterized? What adaptive respiratory structure do terrestrial molluscs present?

Description : How is the respiratory system in aquatic molluscs characterized? What adaptive respiratory structure do terrestrial molluscs present?

Last Answer : Aquatic molluscs oxygenate their blood through gills in direct contact with water. In terrestrial molluscs the rich vascularity under the mantle cavity absorbs air doing the role of a primitive lung. Mollusca - Image Diversity: mollusc respiratory system

.Malpighian tubules are (a) excretory organs of insects (b) excretory organs of annelids (c) respiratory organs of insects (d) respiratory organs of annelids.

Description : .Malpighian tubules are (a) excretory organs of insects (b) excretory organs of annelids (c) respiratory organs of insects (d) respiratory organs of annelids.

Last Answer : (a) excretory organs of insects

Copper containing respiratory pigment in blood of molluscs.

Description : Copper containing respiratory pigment in blood of molluscs.

Last Answer : Give one word for the following: Copper containing respiratory pigment in blood of molluscs.

Chordate identity card. How are they characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Description : Chordate identity card. How are they characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Last Answer : Examples of representing beings: protochordates (ascidians, amphioxus), vertebrates. Basic morphology: branchial clefts, notochord, neural tube. Type of symmetry: bilateral. Germ layers and coelom: ... in vertebrates. Types of reproduction: sexual, with or without larval stage. Fish Review

Echinoderm identity card. How are echinoderms characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Description : Echinoderm identity card. How are echinoderms characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Last Answer : Examples of representing beings: sea cucumber, sea urchin, starfishes. Basic morphology: calcareous endoskeleton with spines, ambulacral system. Type of symmetry: secondary radial. Germ layers and ... cephalization. Types of reproduction: sexual, with larval stage. Phylum Chordata - Study Here

Arthropod identity card. How are arthropods characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Description : Arthropod identity card. How are arthropods characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Last Answer : Examples of representing beings: cockroaches, flies, crabs, lobsters, shrimps, spiders, scorpions, mites. Basic morphology: segmented body (metameric), articulated limbs, chitinous exoskeleton, ... crustaceans, metamorphosis in some insects, no larval stage in arachnids. Phylum Mollusca Review

What is the type of circulatory system present in arthropods? Do these animals have heart and respiratory pigments?

Description : What is the type of circulatory system present in arthropods? Do these animals have heart and respiratory pigments?

Last Answer : In arthropods the respiratory system is open (lacunar). Blood, also known as hemolymph, is pumped by a heart and falls into cavities (lacunas) irrigating and draining tissues. All arthropods have ... blood does not carry gases (in them gases reach tissues and cells through tracheal structures).

Annelid Identity card. How are they characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Description : Annelid Identity card. How are they characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Last Answer : Examples of representing beings: earthworms, leeches, lugworms. Basic morphology: cylindrical body, segmented (metameric). Type of symmetry: bilateral. Germ layers and coelom: triploblastics, ... ). Types of reproduction: sexual, with dioecious and monoecious beings. Phylum Arthopoda Review

Nematode identity card. How are nematodes characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Description : Nematode identity card. How are nematodes characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Last Answer : Examples of representing beings: ascaris, hookworms, filaria, pinworms. Basic morphology: cylindric (round) body, not segmented. Type of symmetry: bilateral. Germ layers and coelom: ... ganglial chord, primitive cephalization. Types of reproduction: sexual. Phylum Annelida - Q&A Review

Platyhelminth identity card. How are platyhelminthes characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Description : Platyhelminth identity card. How are platyhelminthes characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Last Answer : Examples of representing beings: planarias, schistosomes, taenias. Basic morphology: flat worm. Type of symmetry: bilateral. Germ layers and coelom: triploblastics, acoelomates. Digestive system: ... , beginning of cephalization. Types of reproduction: asexual and sexual. Phylum Nematoda Review

Cnidarian identity card. How are they characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Description : Cnidarian identity card. How are they characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Last Answer : Examples of representing beings: jellyfish, corals, sea anemones, hydra. Basic morphology: polyp or medusa. Type of symmetry: radial. Germ layers and coelom: diploblastics, acoelomate. Digestive ... of reproduction: asexual and sexual with larval stage and metagenesis. Flatworms - Study Them Here

Sponge identity card. How are sponges characterized according to example of representing beings, basic morphology, type of symmetry, embryonic (germ) layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Description : Sponge identity card. How are sponges characterized according to example of representing beings, basic morphology, type of symmetry, embryonic (germ) layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

Last Answer : Example of representing beings: sponges. Basic morphology: tubular or globular body with spongocoel, sessile; choanocytes, pinacocytes and amoebocytes. Type of symmetry: not established. Germ layers ... Types of reproduction: asexual and sexual with larval stage. Cnidarians - Questions and Answers

Which animal lacks respiratory system and circulatory system ?

Last Answer : Respiratory and circulatory systems of 'powder worms' are missing

Assertion : - Circulatory system of cockroach does not contain any capillary. Reason :- Blood of cockroach does not contain any respiratory pigment.

Description : Assertion : - Circulatory system of cockroach does not contain any capillary. Reason :- Blood of cockroach does not contain any respiratory pigment.

Last Answer : Assertion : - Circulatory system of cockroach does not contain any capillary. Reason :- Blood of cockroach does not contain ... . A. A B. B C. C D. D

How does oxygen moves from the respiratory system to the circulatory system?

Description : How does oxygen moves from the respiratory system to the circulatory system?

Last Answer : by diffusion across a capillary wall

Hypersensitivity refers to undesirable reactions produced by a) circulatory system b) Respiratory system c) Immune System d) Endocrine system e) Autonomic nervous system

Description : Hypersensitivity refers to undesirable reactions produced by a) circulatory system b) Respiratory system c) Immune System d) Endocrine system e) Autonomic nervous system

Last Answer : Ans: C

Which one of the following is not correct with regard to the harmful effects of particulate matter of the size 2.5  micrometer or less? (a) It can cause respiratory problems. (b) It can directly enter into our circulatory system. (c) It can cause inflammation and damage to the lungs. (d) It can be inhaled into the lungs.

Description : Which one of the following is not correct with regard to the harmful effects of particulate matter of the size 2.5  micrometer or less? (a) It can cause respiratory problems. (b) It can directly enter ... ) It can cause inflammation and damage to the lungs. (d) It can be inhaled into the lungs.

Last Answer : (b) It can directly enter into our circulatory system.

Which body system coordinates activities of body parts by releasing hormones into the blood? A) nervous system B) digestive system C) respiratory system D) circulatory system E) endocrine system

Description : Which body system coordinates activities of body parts by releasing hormones into the blood? A) nervous system B) digestive system C) respiratory system D) circulatory system E) endocrine system

Last Answer : E) endocrine system

Chemical regulation of the body involves which system: a) lymphatic b) respiratory c) circulatory d) nervous e) endocrine

Description : Chemical regulation of the body involves which system: a) lymphatic b) respiratory c) circulatory d) nervous e) endocrine

Last Answer : ANSWER: E -- ENDOCRINE

Do echinoderms have respiratory and circulatory systems?

Description : Do echinoderms have respiratory and circulatory systems?

Last Answer : In echinoderms there are not well-defined respiratory (with the exception of the holothurian group) and circulatory systems. The ambulacral hydrovascular system plays the function of these systems.

What two systems help us get nutrients from our food and deliver them throughout our body? a) Respiratory and Nervous b) Digestive and Circulatory c) Circulatory and Respiratory d) Respiratory and Digestive

Description : What two systems help us get nutrients from our food and deliver them throughout our body? a) Respiratory and Nervous b) Digestive and Circulatory c) Circulatory and Respiratory d) Respiratory and Digestive

Last Answer : b) Digestive and Circulatory

1. Excretory system of these molluscs is of open type except, 

Description : 1. Excretory system of these molluscs is of open type except, 

Last Answer : Multiple-choice Questions 1. Excretory system of these molluscs is of open type except, (a) Sea hare ... (c) Macropus (d) Duck billed platypus

What is the type of digestive system in molluscs?

Description : What is the type of digestive system in molluscs?

Last Answer : Molluscs present extracellular digestion and a complete digestive system, with mouth and anus.

What type of circulation is found in annelids? -Biology

Description : What type of circulation is found in annelids? -Biology

Last Answer : answer:

How is the nervous system characterized in beings of the phylum Annelida? How can one compare cephalization in annelids to cephalization in nematodes and platyhelminthes?

Description : How is the nervous system characterized in beings of the phylum Annelida? How can one compare cephalization in annelids to cephalization in nematodes and platyhelminthes?

Last Answer : Annelids have a nervous system made of two ventral chords and one relatively big nervous cell concentration in its anterior portion resembling a primitive brain. Nematodes have an anterior neural ... is more outstanding than in nematodes or in flatworms. Image Diversity: earthworm nervous system

How can the excretory system of annelids be described?

Description : How can the excretory system of annelids be described?

Last Answer : In each segment (metamere) of the being a pair of complete excretory structures called metanephridium exists. The metanephridium has an extremity, the nephrostoma, which collects residuals from the ... , the nephridiopore, which opens in the body surface. Image Diversity: earthworm excretory system

What type of exoskeleton do some molluscs present?

Description : What type of exoskeleton do some molluscs present?

Last Answer : Some molluscs, like bivalves and gastropods, secrete an external calcareous carapace (the shell). Calcium carbonate is secreted by the mantle, a fold in the epidermis, forming the shell. In pelecypods ... contains only part of the body, the visceral mass. Mollusca - Image Diversity: mollusc shell

How is the nervous system of molluscs organized?

Description : How is the nervous system of molluscs organized?

Last Answer : Molluscs have well-developed sensory structures. It is accepted that cephalopods, like octopus and squid, have eyes with image formation. Snails have antennae and a pair of well-defined ... molluscs and neurons concentrate in a ganglial pattern. Mollusca - Image Diversity: mollusc nervous system

How is the excretory system of molluscs characterized?

Description : How is the excretory system of molluscs characterized?

Last Answer : Molluscs have one or two pair of spongelike nephridia, similar to kidneys.

Example for aquatic annelids. -Biology

Description : Example for aquatic annelids. -Biology

Last Answer : answer:

In constrast to annelids the Platyhelminthes show

Description : In constrast to annelids the Platyhelminthes show

Last Answer : In constrast to annelids the Platyhelminthes show A. Absence of body cavity B. Presence of pseudocoel C. Radial symmetry D. Bilaterla Symmetry

Annelids possess

Description : Annelids possess

Last Answer : Annelids possess A. Cell aggreate plan B. Blind sac plan C. Tube within a tube plan D. Hollow sac plan

$ The first formed embryonic cavity is called blastocoel. ! Annelids have a segmented body.

Description : $ The first formed embryonic cavity is called blastocoel. ! Annelids have a segmented body.

Last Answer : $ The first formed embryonic cavity is called blastocoel. ! Annelids have a segmented body. A. If both As ... is wrong D. If both As and R are wrong.

Do annelids have a back bone?

Description : Do annelids have a back bone?

Last Answer : no

Do annelids have a back bone?

Description : Do annelids have a back bone?

Last Answer : no

What is the main evolutionary novelty presented by annelids?

Description : What is the main evolutionary novelty presented by annelids?

Last Answer : The main evolutionary novelty presented by the beings of the phylum Annelida is the coelom, the internal body cavity totally covered by mesoderm, a feature also present in arthropods, ... important evolutionary novelty of the annelids is the closed circulatory system. Image Diversity: coelom

What are some examples of annelids?

Description : What are some examples of annelids?

Last Answer : Earthworms, leeches and lugworms. Image Diversity: earthworms leeches lugworms

What are the morphological similarities and differences between nematodes and annelids?

Description : What are the morphological similarities and differences between nematodes and annelids?

Last Answer : Nematodes, like annelids, have a cylindrical elongated body. Annelids differentiate from nematodes by presenting a segmented body (body divided into metameres) and so they are called segmented worms.

Uricotelic mode of excreting nitrogenous wastes is found in (a) reptiles and birds (b) birds and annelids (c) amphibians and reptiles (d) insects and amphibians.

Description : Uricotelic mode of excreting nitrogenous wastes is found in (a) reptiles and birds (b) birds and annelids (c) amphibians and reptiles (d) insects and amphibians.

Last Answer : (a) reptiles and birds

In contrast to annelids the platyhelminthes show (a) absence of body cavity (b) bilateral symmetry (c) radial symmetry (d) presence of pseudocoel.

Description : In contrast to annelids the platyhelminthes show (a) absence of body cavity (b) bilateral symmetry (c) radial symmetry (d) presence of pseudocoel.

Last Answer : (a) absence of body cavity

Which of the following animals are true coelomates with bilateral symmetry? (a) Adult Echinoderms (b) Aschelminthes (c) Platyhelminthes (d) Annelids

Description : Which of the following animals are true coelomates with bilateral symmetry? (a) Adult Echinoderms (b) Aschelminthes (c) Platyhelminthes (d) Annelids

Last Answer : (d) Annelids