In medusae, mesoglea comprises the bulk of the animal and forms a resilient skeleton. In polyps, the water-filled coelenteron acts as a hydrostatic skeleton, which, in concert with the mesoglea, maintains the form of these animals. Muscles in cnidarians are extensions of the bases of ectodermal and endodermal cells.
Explanation:
Pyruvic acid supplies energy to living cells through the citric acid cycle (also known as the Krebs cycle) when oxygen is present (aerobic respiration), and alternatively ferments to produce lactic acid when oxygen is lacking (fermentation).Hope it helps
Precipitation( condensation), evaporation
please vote my answer brainliest. thanks!
A letter is a type of non-fictional written, typed, or printed communication. These are typically sent to the receiver via mail or postal service in an envelope and are typically written to facilitate communication between two people.
A 12, Civil lines,
XYZ Road,
Delhi.
23 Aug. 2022,
I hope you and your family are doing good. I am writing this letter to let you know the way we celebrate independence day in Ghana. All the streets and roads are decorated with confetti. Firecrackers are being lit everywhere. The kids are getting their faces painted with Ghana's flag. My mother is also cooking a special dinner for all of us. I will send you pictures of the entire event. Thanks!
Yours truly,
XYZ.
To learn more about letter writing refer here: brainly.com/question/23864960
#SPJ9
Answer:
a.Many mitochondrial genes resemble proteobacteria genes, while the genes in the chloroplast resemble genes found in some photosynthetic bacteria.
c.Mitochondria and chloroplasts both have their own circular DNA and 70S ribosomes that are similar to those found in bacteria.
d.Mitochondria and chloroplasts replicate by a process similar to mitosis.
Explanation:
Endosymbiotic theory states that mitochondria and chloroplast which are organelles of eukaryotic cells were once independently living micro-organisms but with due course of time eukaryotic cells engulfed them and they become an integral part of these eukaryotic cells.
The resemblance between mitochondrial genes with those of proteobacteria and chloroplast genes with photosynthetic bacteria strongly support endosymbiotic theory. Apart from this, the presence of their own DNA that too circular just like prokaryotic microbes and 70 S ribosomes also support this theory. Also just like prokaryotic cells, before cell division mitochondria and chloroplasts undergo replication by means of a process known as binary fission.
