What are two characteristics unique to angiosperm reproduction? And how can you tell that grass flowers are wind pollinated rather than insect pollinated?
I am trying to understand the difference between a typical dicot flower AND a typical monocot flower. I've been searching for a simple to understand drawing that labels the sepal, stamen, pistil (dicot) and also a drawing that labels the typical monocot flower that labels the tepals, stamen, and pistil.
The difference between a woody dicot and a herbaceous dicot.
Describe how a woody dicot stem differs from an herbaceous dicot stem and list a few examples of each.
life cycles of phyla of embryophytes
Which of the following occur in the lifecycles of all phyla of embryophytes? (circle them)(there should be 14 of them) sporangia, elators, tube nucleus, sieve cells, embryos, antheridia, syngamy w/in gametophyte plant body, cellulo ...continues
life on earth (biological concepts from the non-science major perspective)
More than a century ago, French biochemist Louis Pasteur described a phenomenon, now called "the Pasteur effect,' in the wine-making process. He observed that in a sealed container of grape juice containing yearst the yeast will consume the sugar very slowly as long as oxygen remains in the container. As soon as the oxygen is go ...continues
"Multiple, recurring origins of aposematism and diet specialization in poison frogs" by Santos
I have some question about the article "Multiple, recurring origins of aposematism and diet specialization in poison frogs" by Santos et al. 1. Why is aposematism difficult to explain from an evolutionary point of view? 2. Which hypothesis regarding the evolution of aposematism in dendrobatid frogs are the authors testing? ...continues
We are given the following five sequence: Taxon 1, Taxon 2, Taxon 3, Taxon 4, Taxon 5 TGCCAA, GGACAA, TGTCAA, TGTCAT, GGACAT a) In general, how many unrooted trees are there relation five taxa? b) Draw the following two trees. the first one has taxa 2 and 5 as sister taxa and taxa 1 and 3 as sister taxa. the second one ...continues
Could you please tell me WHY green algae and land plants are considered to be monophyletic? I can't seem to find specific info in my text. Thanks!
Problems of Land Plants, Telome Theory, and Rhynia
There are actually three questions here, all dealing with Rhynia (Rhynia is known by two names, the diploid life cycle "Rhynia major", and the haploid life cycle "Rhynia gwynne-vaughanii"). I thought it would be a good idea to put these 3 questions together because they all deal with the same general ideas. 1) HOW HAS TH ...continues
Siphonogamy and the Seed. Which one came first?
-- Define and briefly discuss both siphonogamy and the seed. -- Which do you think came first? I have a good start on the definitions, but please reword or (briefly) add to them to make them complete: A seed is: a fertilized, integumented, (Sterile covering/coating. Provided by diploid parent) undehiscing (non-splitting. ...continues
