Answer:
The correct option is<u> slight increase in salt concentration in the
</u>
<u>environment.</u>
Explanation:
The main function of contractile vacuole in the body of a paramecium is to pump out excess water. But an increase in salt concentration in the environment will let the water move inside the cell by osmosis. Hence, the contractile vacuole will not perform its function and will not be able to regulate osmoregulation.
Other options are incorrect because slight changes in the temperature or pH won't affect the contractile vacuole and it will still be able to perform its function.
Answer:
Bacteria
Explanation:
Leucosomes are the white blood corpuscles or WBCs which is come out to protect the body from bacteria and other infections.
Answer:
a primitive mammal that lays large yolky eggs and has a common opening for the urogenital and digestive systems. Monotremes are now restricted to Australia and New Guinea, and comprise the platypus and the echidnas.
Explanation:
Canine teeth are not as useful as it is in animals while archaeopteryx has the character of both birds and reptiles.
<h3>What are vestigial organs?</h3>
The vestigial organs are those organs that have no apparent function in the body which means that the body can do without them.
Examples of vestigial organs in the body are:
The canine teeth is a type of teeth in mammalian dentition and is said to be vestigial because man can do without it.
Archaeopteryx are animals that has the characteristics of both birds and reptiles because it bears wings like birds and has hands it uses to crawl like a reptile.
Learn more about vestigial organs here:
brainly.com/question/1350219
<span> Embryonic stem cell research is kind of a dead area now since there is no way to control the differentiation. Most research is being done on adult stem cells to help map and control the differentiation process.
Stem-cells from aborted fetuses - The government doesn't sponsor this, if it is done it is by private companies not located in the USA. You could try researching umbilical cord stem cells to be somewhere near your topic. They come from the afterbirth of normal deliveries.
You could do a much easier report by covering cloning of mice through stem-cell technology. It is happening and helping scientists understand diseases. </span>
