Streptococcus pyrogenes : Round (or) Ovoid
Paenibaccilus polymyxa:
Aquaspirillum bengal: Helical
Explanation:
- Streptococcus pyogenes are gram positive, Round shaped, Anaerobic growth bacteria, Non-motile bacteria.
- Aquaspirillum bengal is helical in shape with its composition of deoxyribonucleic acid and cytosine. It is Gram negative and chemo-organotrophic. It is also motile with the help of flagella.
- Paenibacillus polymyxa is also known as Bacillus polymyxa which is capable of fixing nitrogen. It is found in soil, plant tissues and marine sediments. It has a major role in forest ecosystems and potential future applications as a biofertilizer and biocontrol agent in agriculture.
The correct answer is that the shells of clams and other mollusks dissolve when the pH becomes more acidic.
This is because the shells of clams and other mollusks are made of calcium carbonate that is dissolved in acidic conditions. The pH needs to be low to dissolve calcium carbonate into it. It takes few days to dissolve the shell completely.
The answer is A.) 0.1 kg. If a Zebra, intakes 10 kg of grass in one day and then, a lion hunts and devours the zebra, the lion will be able to absorb 0.1 kg of the energy contained originally in the grass, consumed by the zebra.
Pros:
It protects the bug's insides.
It's like armor in a way.
Endoskeletons can provide many pretty colors...
Cons:
It's like a shell so when it breaks you're exposed to the many harmful things.
Hope that helps!
