B. Pattern of learning that creates behavior
C. The stimulus that triggers a behavior
a. Sponge
b. worm
c. mollusk
d. Cnidaria
The body symmetry of each organism you mentioned is as follows:
Sponge: Asymmetrical
Sponges have no definite body symmetry. Their body structure lacks any organized pattern or axis of symmetry.
Cnidaria (e.g., jellyfish, corals, sea anemones): Radial Symmetry
Cnidarians exhibit radial symmetry, which means their body parts are arranged around a central axis. They have multiple planes of symmetry, allowing them to be divided into equal halves through their central point.
Worms (e.g., earthworms): Bilateral Symmetry
Most worms, including earthworms, exhibit bilateral symmetry. This means their bodies can be divided into two equal halves along a single plane, resulting in a left and right side that are mirror images of each other.
Mollusks (e.g., snails, clams, octopuses): Bilateral Symmetry
Mollusks also have bilateral symmetry. Their bodies can be divided into two equal halves along a single plane, resulting in a left and right side that are mirror images of each other.
It's worth noting that while sponges and cnidarians have simple body plans and display asymmetry or radial symmetry, worms and mollusks have more complex body structures, and their bilateral symmetry is an adaptation that allows for greater mobility and more efficient movement in their environments.
~~~Harsha~~~
The levels of organization from small to large is the atom, molecule, organelles, cells, tissues, organs, organ system, and the organism.
• All the living and non-living thing is made up of one or more specific components called the elements, whose smallest unit is the atom.
• The atoms combine to produce the molecules. These are the building blocks to all the compositions in the body of a human being.
• All the living compositions are formed of cells, which are formed of many distinct molecules.
• All the cells are formed of a cell membrane that encircles a jelly-like cellular fluid comprising tiny organ like compositions known as organelles.
• The cells within the human body are aligned into tissues, which is a group of cells that work together to do a particular activity.
• The two or more different types of tissues give rise to an organ.
• The group of organs is known as the organ system.
• The most complex level of organization, which is formed of several organ systems that function in harmony is the organism.
Thus, the levels of organization from small to large is atom, molecule, organelles, cells, tissues, organs, organ system, and the organism.
To know more about: