Answer:
The correct answer would be
- They are vase-shaped
- Their tentacles trail down from their mouth.
Coral polyps are small, soft-bodied organisms mainly belong to the phylum Cnidaria.
They have a vase-shaped body that is, their body is cylindrical in shape which is elongated at the axis.
They remain attached to the rocks present on the floor of the sea.
They have tentacles which help in capturing the food.
The tentacles surround the mouth which opens into a central cavity filled with fluid.
They can reproduce sexually as well as asexually.
Answer:
Scientists have been concerned that human activities could cause more plants and animals to become extinct than any point in the past. Along with human-made changes in climate (see above), some of these extinctions could be caused by overhunting, overfishing, invasive species, or habitat loss
Antibiotic used include kenamycin, ampicillin and tetracycline. This is useful to determine if and which bacteria took up the plasmid as they were supposed to during the process of recombination. Host bacteria are normally killed by these antibiotics. If the recombinant plasmids were taken up by the bacteria, plasmid may have contained a DNA gene for resisting the effects of one or more antibiotics. Host bacteria are placed in a growth medium containing an antibiotic to which they have a resistant gene in their recombinant plasmid DNA survivor. If they havent taken the plasmid they die.
Chloroplast is the cell structure that enables the process of photosynthesis
ATP or Adenosine triphosphate is well know for it's energy source but despite it has many roles in cell. ATP is primarily used as energy source as it has higher energy in it's phospho-di-ester bonds between P and P atoms. It is hydrolyzed to ADP & AMP to give energy.
