What is the basic body plan of a mollusk?
The body plan of a mollusk usually consists of a head region, a muscular foot, and a visceral mass of internal organs that is often contained within a dorsal shell. Each class possesses some variation on this basic plan.
What are the three parts of the mollusc body plan?
The three distinct parts of molluscs are the head, muscular foot and visceral hump.
What body plan do mollusks have that make them unique?
Despite their amazing diversity, all molluscs share some unique characteristics that define their body plan. The body has a head, a foot and a visceral mass. This is all covered with a mantle (also known as a pallium) that typically secretes the shell.
What are the 4 main body parts of mollusks?
The four important body parts in the mollusk could be listed as: Shell, Mantle, Visceral Mass and Foot.
What three components make up the body plan of mollusk quizlet?
The three parts that make up the basic mollusk body plan are the visceral mass, the mantle, and the foot. The visceral mass is the central section of the mollusk’s body that contains the mollusk’s organs.
Which set of body parts does every mollusk have?
All mollusks have: a visceral mass containing internal organs, including the digestive tract, paired kidneys, and reproductive organs. a mantle that surrounds but does not cover entirely the visceral mass and secretes a shell (if one is present). The mantle also contributes to formation of gills or lungs.
What are the 3 body parts that are found in every mollusk in some form what is the function of each of these body parts?
Despite their diversity, mollusks share in common a three-part body plan that includes a head, a foot and a visceral mass.
- The Head. i. The mollusk’s head region contains the brain.
- The Foot. i. A mollusk has a “foot,” the body’s muscular section, responsible for movement.
- Shells. i.
What is a common feature of most molluscs bodies?
The most universal features of the body structure of molluscs are a mantle with a significant cavity used for breathing and excretion, and the organization of the nervous system. Many have a calcareous shell.
Which part of the mollusk body contain organs?
What body characteristics do mollusks have in common?
WHAT FEATURES DO MOLLUSKS HAVE IN COMMON? As well as a shell, most mollusks have a muscular foot for creeping or burrowing. Some also have a head with sense organs. The soft body includes lungs or gills for breathing, and digestive and reproductive parts, all enclosed by a skinlike organ called the mantle.
Do mollusks reproduce asexually?
HOW DO MOLLUSKS REPRODUCE? Mollusks reproduce sexually. Slugs and snails are hermaphrodites (possessing both male and female organs), but they must still mate to fertilize their eggs. Most aquatic mollusks lay eggs that hatch into small, free-swimming larvae called veliger.
Which body part in a mollusk secretes the shell?
The mantle of mollusks and brachiopods secretes the shell in species that possess shells. It also forms a mantle cavity between itself and the body.
What type of reproduction occurs in mollusks?
Sexual reproduction
Mollusks reproduce sexually, and most species have separate sexes. Sexual reproduction is achieved by the formation and fusion of gametes: sperm and eggs. Some species are hermaphrodites meaning that individuals are capable of forming both sperm and eggs.
How do mollusks reproduce asexually?
Mollusk reproduce asexually by being hermaphroditic where they are both male and female they also asexually reproduce by budding.
Which of the following is true about reproduction in mollusc?
Some species of mollusc are hermaphrodites that reproduce by internal fertilization. Therefore, option C both sexual and asexual reproduction is the correct answer. So, option C is the correct option.