Nico is reading an article about two fossils that appear to have a common ancestor. fossil x has a much more complex bone structure than fossil y.

what does this most likely suggest about the fossils?
fossil x evolved later in earth's history than fossil y.
fossil x evolved earlier in earth's history than fossil y.
fossil x is less than 100,000 years old.
fossil y is more than 100,000 years old.

Ans.

According to theory of evolution, all living organisms are evolved from a common ancestor and simple life forms progressively evolved into more complex life forms. It means, evolution represents a gradual process, in which diversification of simpler organisms into complex life forms takes place.

As fossil of organism X shows a more complex bone structure than fossil of organism Y, fossil X must have evolved after fossil Y.

Thus, the correct answer is option). 'fossil X evolved later in Earth's history than fossil Y.'

a neutral ph of 7 and normal organism temperature is needed for a certain enzyme to be effective.  

what would happen to the enzyme if the ph and/or temperature fluctuate greatly from the norm?  

a.the enzyme’s hydrogen bonds will break.  

b.the activation energy will increase.  

c.more product will be formed.

d.the ideal temperature and ph for the enzyme function will decrease.  

answer: angiosperms

dicots

angiosperms are highly evolved plants, they produce seeds which are enclosed within in a carple. these are the largest group of plants on earth. they include trees, shrubs, herbs and small flowering plants. angiosperms exhibit a flowering stage in their life cycle. the flower serves the function of reproduction and fruit formation in majority of angiosperms. dicot is the term used to describe flowering plants that have two seed leaves. dicots are plants which develop seeds which split into two parts called cotyledons. each cotyledon contains one embryo.

here, a small purple flower development indicates that the plant belongs to angiosperms and having two embryonic leaves indicates it belongs to dicots.