Porifera: sponges
Cnidaria: stingers
Mollusca: mollusks
Arthropoda: arthropods
Echinodermata: echinoderms
B: Dendrite, axon, and cell body
C: Sensory and Motor
D: Cortex, medulla, and sheath
b. coral.
c. plankton.
d. kelp.
The correct answer is option C, Plankton
Reason -
In open ocean food web, the organism that lies at the bottom is planktons. Photo plankton consists of chlorophyll and is able to produce food of its own. The zoo planktons then feed on the photo planktons. Corals also survive by eating planktons. Small fishes survive by eating zooplanktons. Larges fishes then feed on smaller fishes. Thus, plankton is at the base of a complex aquatic food web.
Answer:
The correct answer is B-cells
Explanation:
There are two types of lymphocytes B- lymphocytes and T- lymphocytes. B lymphocytes or B cells when interacts with the antigen with its B cell receptor it differentiates into two cell memory B cells and plasma B cells.
Plasma B cell is responsible for secreting various antibodies and these antibodies bind to the epitope region of antigen and helps in opsonization and killing of antigen. Memory B cell helps in generating quick immune response when that antigen comes again in the body. Therefore the correct answer is B cells.
B. A whale has the ability to hold its breath for 20 minutes.
C. A fox's hair is white in the winter and brown in the summer.
D. A monkey has long arms that allow it to swing from one branch to another.
Answer:
a, bird builds its nest in the ash near a volcano
Explanation: