Answer:
Sporophyte is diploid multicellular stage that are found in plants, algae and helps in formation of zygote.
Explanation:
The seedless vascular plants bear dominant sporophytes over generation like clubmoss,ferns etc.
The leaves are dotted with sporangia which are in cluster form.
The sporangia helps in formation of gametophytes that contain antheridia and archegonia.These structures are important as they produce sperm with multiple cilia bearing on it and eggs.
The individuals that are produced live long and grow in larger size.
The individuals produce more oxygen as they contain chlorophyll.They produce carbohydrate rich food by the process of photosynthesis.
Answer:
Thymine = 26%,
Adenine = 26%
Guanine = 24%
Cytosine = 24%
Explanation:
Chargaff's stated that the DNA of any cell has the same content of purine (A and G) and pyrimidine (T and C) bases. In the DNA molecule, T pairs with A (T–A), and G pairs with C (G–C). In consequence, according to this base pair-rule, the amount of Thymine (T) should be equal to the Adenine (A), and the amount of Cytocine (C) should be equal to the Guanine (G).
In this example, the content of A is 26%, and thereby the amount of the remaining bases is: 48 % (26 + 26 = 52 >> 100 - 52 = 48), where C= 24% and G=24%.
Hello! Succession is not really harmful to ecosystems and it’s not a one-time event, because things come and go overtime. Therefore, it’s not A or D. It is necessary for ecosystem recovery, because it’s needed to continue on with things, just like families reproduce to make family continue. It’s not that bad. It’s just a natural process that happens. The answer is B: natural recovery process.
Answer:
The correct answer to the question: What type of homeostatic mechanism is this species using to regulate its internal salt levels? Would be A: Conformation.
Explanation:
The reason for this being the right answer comes from the context of the question itself. You have a bacteria who is placed in a specific environment. As you study it, you realize that the salt concentration both in the internal and external environment of the bacterial cell is similar. Also, you notice that if you alter the concentrations of the outside medium, the bacteria responds by adjusting its own internal environment, However, the changes that the bacterial cell will accept before not being able to adapt its homeostatic mechanisms are not very big, and if you raise the salt level too much, then there will be a limit as to how much the bacteria can also conform to those changes. This is the mechanism described as conformation.
Answer:
C- it help to show that some bacteria are just one cell.
Explanation:
Anton Leeuwenhoek was the first scientist who observed the presence of bacteria in his tooth scratch under the microscope made by himself. At that time there was no concept of bacteria and he named those small creatures as animalcules which were later termed as bacteria.
Leeuwenhoek during 1670s sent the details of his experimentation on algae and bacteria to Royal Society of London.
It was due to his that primitive experiment that made the discovery of bacteria and make it known to other scientists. Therefore option C is the best option that demonstrates that bacteria are single celled organisms that are very minute. When we look at cell theory there is a postulate that shows that cell is the fundamental unit of function and structure of all living organisms. So, the work of Anton Leeuwenhoek holds substantial importance in the formulation of cell theory.
Hope it helps!
