Answer:
a. Mammalia
Explanation:
Mammalia are the class species that have distinct systems and separate ducts for different activities like reproduction, excretory, and defecatory and moreover they have nipples to feed their young ones.
So, the above species which has a single duct for reproductive, excretory, and defecatory material as well as a lack of true nipples does not belong to Mammalia
Answer:
Ependymal cell present in the central nervous system has an important role in production and control of cerebrospinal fluid (CSF). This ciliated cell acts as sensory for coordination to cellular signaling in the production and control of CSF.
Explanation:
The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces,
If the cell treated with a chemical that inhibits DNA synthesis is treated to undergo the process of the cell cycle, the phase that will be affected is the S-phase of interphase.
<h3>What is interphase?</h3>
The interphase stage of cell division is the resting stage between two successive divisions.
The interphase is further grouped into three phases namely:
- G1 phase
- S-phase or synthesis phase
- G2 phase
The synthesis phase of interphase is the stage where new DNA strand is synthesized, hence, if the cell treated with a chemical that inhibits DNA synthesis is treated to undergo the process of the cell cycle, the phase that will be affected is the S-phase of interphase.
Learn more about interphase at: brainly.com/question/17485110
#SPJ1
<span>nothing actually happens to convection currents when heat is no longer supplied.
</span>
