What trends would they have noticed in earths terrestrial, Ask an Expert

Academics

Q. If intelligent extraterrestrials visited Earth 475 million years ago, and after that again 300 million years ago (at the close of the Carboniferous period), what trends would they have noticed in Earth's terrestrial vegetation over this period?

1. Trend from dominant gametophytes to dominant sporophytes

2. Trend from sporangia borne on modified leaves (sporophylls) to sporangia borne on stalks (seta)

3. Trend from no true leaves, to microphylls, to megaphylls

4. Trend from soil-surface-hugging plants to "overtopping" plants

5. Trend toward increased lignifications of conducting systems

View complete question

Biology, Academics

Category:- Biology
Reference No.:- M9156946

Have any Question?Write your Review or question?

Related Questions in Biology

Question darwin was not the first to consider evolution as

Question: Darwin was not the first to consider evolution as a process but he did come up with the first effective explanation for how it happens. Describe Darwin's theory of evolution by natural selection. Explain how th ...

Chosen dr jan nolta- stem cell researcher head of uc davis

Chosen Dr. Jan Nolta- Stem Cell Researcher Head of UC Davis Stem Cell Program Director Topic Background: early Stem cells have the ability to develop into many different types of cells. Stem Cell Research is not without ...

Select two of the mechanisms of evolutionary change

Select two of the mechanisms of evolutionary change (mutation, gene flow, genetic drift or non-random breeding) and explain what each is and how each can lead to evolutionary change(change in genetic compositions within ...

The united states established the first national park in

The United States established the first National Park in the world on March 1, 1872. What does this say about the people of the United States?

Is this statement correct or incorrect whymuscle tension in

Is this statement correct or incorrect? Why? Muscle tension in cardiac contractile muscle can be increased by temporal summation.

Calculate the concentrations at eqbm of h2co3 hco3- co32-

Calculate the concentrations at eqbm of H2CO3, HCO3-, CO32-, and H+ in a saturated aq solution of H2CO3 in which the original concentration of H2CO3 is 0.034M (Ka1= 4.3*10^-7, Ka2 = 4.8*10^-11)

Assignment 1 create at least a 350-word blog post in

Assignment 1: Create at least a 350-word blog post in Microsoft® Word in response to the following question: Female copperhead snakes have the ability to reproduce both sexually and asexually. In your opinion, which meth ...

What did you determine was the relationship between surface

What did you determine was the relationship between surface tension and the polarity of the liquids you tested?

A cross between a person with straight hair and a person

A cross between a person with straight hair and a person with curly hair will produce a child with wavy hair. If 2 people with wavy hair had a child, what are the odds that the child would have straight hair?

How does the fact that dna is compacted into chromosomes

How does the fact that DNA is compacted into chromosomes specifically help with replication/and or transcription?

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Biology Expert