ehd123

Gametes are Which of the following?

Gametes are Which of the following?

1.
ovary and ovule.
2.
seed and berry.
3.
pollen and ovule.
4.
egg and sperm cell.
5.
carpel and endosperm.

lethallunatic117   261   1 Reply

firetruckboom

Which plant structures are the MOST efficient means of plant dispersal on land?

Which plant structures are the MOST efficient means of plant dispersal on land?

thank you so much for you help. if you dont know all answers, answering a few will be amazing too

1. Which plant structures are the MOST efficient means of plant dispersal on land?
a       fruits with seeds
b       masses of pollen
c       swimmi

firemonkey   575   2 Replies

rknicker

Define "uniseuxual" in this context (Cycad conelike structures)?

Define "uniseuxual" in this context (Cycad conelike structures)?

"They are primitive plants, reproducing by means of seeds produced by unisexual conelike structures, which contain either ovules or pollen sacs."
?Alan Toogood, Plant Propagation: The Fully Illustrated Plant-by-Plant Manual of Practical Techniques

I

microRN   302   1 Reply

lethallunatic117

Conifers do not have flowers to attract pollinators. Instead, fertilization occurs:?

Conifers do not have flowers to attract pollinators. Instead, fertilization occurs:?

a. when insects coated with pollen are trapped in the sticky resin.  
b. when the endosperm takes the place of the male gametes.  
c. via wind pollination.  
d. as the sperm and egg unite inside the woody cone.  
e. when birds transfer pollen in thei

FISH0818   722   1 Reply

midnight1

Ferns and mosses need water for sexual reproduction because:?

Ferns and mosses need water for sexual reproduction because:?

water is required for spore dispersal.
 pollen is transported to nearby plants by raindrops.
 water is required for sperm production.
 they have swimming sperm.

microman   5211   3 Replies

bugmenot1

All of the following are plant adaptations to life on land EXCEPT?

All of the following are plant adaptations to life on land EXCEPT?

A) a cuticle.
B) a vascular system.
C) swimming sperm.
D) seeds.
E) pollen.

FIREMEDIC73   1730   1 Reply

lettie_182

Which of the following events suggests there is a change in the egg cell membrane after penetration by a sperm

Which of the following events suggests there is a change in the egg cell membrane after penetration by a sperm

a. The pollen tube grows away from the egg toward the polar nuclei.    
  b. The egg cell plasmolyzes.    
  c. Double fertilization occurs.    
  d. Ca2+ builds up in the cytoplasm of the egg.    
  e. All of the above are correct.

Fireman 23   474   1 Reply

rl127

What happens to the pollen grain once it associates with (pollinates) a flower?

What happens to the pollen grain once it associates with (pollinates) a flower?

a. It undergoes meiosis to produce male gametophytes.  
b. A pollen tube grows down through the style of the carpel to the ovary.  
c. Sperm cells are formed.  
d. The megaspore mother cell undergoes meiotic cell division.

firestorm   591   1 Reply

rl93

At what point does the generative cell in a pollen grain divide to become two sperm cells?

At what point does the generative cell in a pollen grain divide to become two sperm cells?

a. while still in the anther
b. just after being released from the pollen sac
c. after the pollen tube reaches the ovule
d. after fruit begins to develop

rl127   1206   1 Reply

lessie_anicia

What parts of a plant correspond with different human body parts?

What parts of a plant correspond with different human body parts?

I'm trying to come up with a good introduction question to a lesson regarding flower parts and their functions. The students will be learning the names, locations and functions of the different parts of a flower. The next class, we will be talking ab

fisher   796   1 Reply

microggc

Which structure is found in angiosperms but not gymnosperms?

Which structure is found in angiosperms but not gymnosperms?

Which structure is found in angiosperms but not gymnosperms?

fruit

spores

ovule

seeds

a tube that grows from the pollen to deliver sperm

LessieP   621   1 Reply

firegirl2012

Which of the following are common to all plant groups?

Which of the following are common to all plant groups?

A) Vascular tissues
B) Flagellated sperm
C) Cuticles
D) Pollen grains
D) Spores

rknicker   334   1 Reply

firegirl2012

How would I go about making a phylogenetic tree?

How would I go about making a phylogenetic tree?

I have to make one containing: a Lion, a Horsefly, a Sea lion, a Hammerhead shark, a Pilot whale, a Clown Tree frog, a Pachycepalosaurus (dino lol), Rough Green Tree Snake, Zebra, Sable antelope, and a Wallaby.

No joke. I do need to know though.

firegirl2012   626   1 Reply

firestrike

What is the difference between phylogenetic and evolutionary species concept?

What is the difference between phylogenetic and evolutionary species concept?

10 pts, please help, big exam tomorrow.
This is as far as taxonomy is concerned for a zoology class.

microlin   767   2 Replies

let

If you were using cladistics to build a phylogenetic tree of cats, which would be the best outgroup?

If you were using cladistics to build a phylogenetic tree of cats, which would be the best outgroup?

If you were using cladistics to build a phylogenetic tree of cats, which of the following would be the best outgroup?

a. leopard
b. lion
c. domestic cat
d. tiger
e. wolf

fishayyy   2434   1 Reply

rk_9897

What does phylogenetic importance mean?

What does phylogenetic importance mean?

Im doing an assignment on the conservation of certain species' and need to write about the phylogenetic importance of their primate family, however I'm struggling to understand what this actualy means!

Any help would be greatly appreciated.

Sean
Co

lettie_182   397   2 Replies

firestorm5

What information CANNOT be determined from a phylogenetic tree?

What information CANNOT be determined from a phylogenetic tree?

I. how long an organism has appeared in its current form
II. the approximate evolutionary timeline
III. the evolution of one group of organisms from another

A:I only
B:II and III
C:I and II
D:I and III

firetruckboom   607   3 Replies

fireguy1

How is the comparison of proteins between species used to create a phylogenetic history?

How is the comparison of proteins between species used to create a phylogenetic history?

How is the comparison of proteins between species used to create a phylogenetic history?

fisher 2012   418   1 Reply

irina

What is the best technique for determining phylogenetic relationships among several species?

What is the best technique for determining phylogenetic relationships among several species?

What is the best technique for determining phylogenetic relationships among several species?

LettyQuinones   665   1 Reply

bugmenot1

Can an entire phylogenetic tree be made from DNA or protein sequence data, or does it require data beyondthat?

Can an entire phylogenetic tree be made from DNA or protein sequence data, or does it require data beyondthat?

Thanks for the answer...it's from a single organism I believe.  It's supposed to be a comparison of multiple organisms, right?

Bugmenot   516   1 Reply

fireman2101

What features of organisms that can be used to build a phylogenetic tree?

What features of organisms that can be used to build a phylogenetic tree?

In year 12 terms please

Fire_Fly   498   2 Replies

fireman

Evolutionary history of Basidiomycetes? Need some details and can't even get good clade or phylogenetic tree!?

Evolutionary history of Basidiomycetes? Need some details and can't even get good clade or phylogenetic tree!?

I am trying to figure out some good, somewhat basic details about the evolutionary history of Basidiomycetes. This far all I can really tell is that they are related to Ascomycetes. I can't even find a good Clade diagram or Phylogenetic tree online.

micromarc   426   1 Reply

micro_2012

Constructing a phylogenetic tree for the evolution of birds?

Constructing a phylogenetic tree for the evolution of birds?

If you were constructing a phylogenetic tree for the evolution of birds which characteristics found in Archaeopteryx might provide evidence that birds and dinosaurs had a common ancestor

a. feathers, wings, wishbone
b. claws, feathers, hollow bones

fish44447   762   2 Replies

MicroNerd

What does a branch point in a phylogenetic tree represent?

What does a branch point in a phylogenetic tree represent?

A) A branch point represents a split between two phyla
B) A branch point represents a gene duplication event
C) A branch point represents a place where one species branches off from another
D) A branch point represents the absolute time at which two

Midnightcharm   781   2 Replies

micronut

How does one construct a phylogenetic tree that shows a parsimoious relationship between species?

How does one construct a phylogenetic tree that shows a parsimoious relationship between species?

How does one construct a phylogenetic tree that shows a parsimoious relationship between species?

IE:
Species
1 ATG AGC TGC
2 ATT AAC TGC
3 ATG AGC TGC
4 ATT AAC TGC

lethalheritage   418   1 Reply

fireguy1

What are some of the milestones on the phylogenetic tree?

What are some of the milestones on the phylogenetic tree?

This doesn't need to be too long of an answer.  Just a couple of sentences will suffice. Thank you

firepain   568   2 Replies

Leugim Legna

What does the vertical distance in a phylogenetic tree represent?

What does the vertical distance in a phylogenetic tree represent?

What does the vertical distance in a phylogenetic tree represent?

firework6   768   1 Reply

microggc

When given two types of sequences (DNA or Protein) what is preferred for making a phylogenetic tree?

When given two types of sequences (DNA or Protein) what is preferred for making a phylogenetic tree?

Is it based on the DNA sequence or on the protein sequence or to combine them? I need a lengthy answer.

LetEnglandShake   465   1 Reply

leslies

How to build a Phylogenetic Tree for Plants? Is there a program that I can use?

How to build a Phylogenetic Tree for Plants? Is there a program that I can use?

How to build a Phylogenetic Tree for Plants? Is there a program that I can use?

fireman2101   487   1 Reply

irina

Where can I find a cladogram or a phylogenetic tree for a woodpecker?

Where can I find a cladogram or a phylogenetic tree for a woodpecker?

and to be specific.... the scientific name is: Melanerpes uropygialis also known as the
gila woodpecker...
Thanks!
ummm... chris you kind of confused me... im just looking for a place where i can find a phylogenetic diagram or cladogram... not cars.

micromarc   638   1 Reply

FISH0818

How does a cladogram differ from a phylogenetic tree?

How does a cladogram differ from a phylogenetic tree?

I'm having a hard time finding the answer in my book...help would be awesome.

letsgopats   2066   1 Reply

micromarc

Why we can not assume that any phylogenetic tree which is based on sequenced data express evolutionary events?

Why we can not assume that any phylogenetic tree which is based on sequenced data express evolutionary events?

Phylogeny based on sequence data can reveal different clades, but why we can not assume chronological evolutionary events based on the topology of the branches?

FIREMEDIC73   501   1 Reply

Midnightcharm

What are the differences between phylogram and phylogenetic tree?

What are the differences between phylogram and phylogenetic tree?

What are the differences between phylogram and phylogenetic tree?

leslies   400   1 Reply

rlaehgns

What are four types of evidence used by systematic taxonomists to construct phylogenetic trees?

What are four types of evidence used by systematic taxonomists to construct phylogenetic trees?

thanks for the help.

rk_9879   1271   1 Reply

rk_9897

How does phylogenetic knowledge help pharmaceutical companies in their exploration of compounds for drug devel?

How does phylogenetic knowledge help pharmaceutical companies in their exploration of compounds for drug devel?

Please can you give me anything to get started i would be so greatful.

letmah13   499   1 Reply

letsgopats

Using anatomical similarities and differences is one way to classify living organisms in a phylogenetic....?

Using anatomical similarities and differences is one way to classify living organisms in a phylogenetic....?

Using anatomical similarities and differences is one way to classify living organisms in a phylogenetic fashion. What is the term given to a structure that is present but is no longer being used by that organism?

rknicker   605   1 Reply

LessieP

What's the difference between a cladogram and a phylogenetic tree?

What's the difference between a cladogram and a phylogenetic tree?

So, what is the clear difference between these two, from an evolutionary standpoint?

rlalonie28   2630   1 Reply

fireguy1

Which statements about the phylogenetic tree are true?

Which statements about the phylogenetic tree are true?

Rays and frogs have a vertebral column.
 Mammals and turtles are more closely related than are lungfishes and sharks.
 Descendants of organism (d) have legs.
 Organism (a) is a common ancestor of all chordates.
 Lancelets and coelacanths are more

FISH0818   5635   1 Reply

fireman2101

What's the difference between taxonomic and phylogenetic classification?

What's the difference between taxonomic and phylogenetic classification?

What's the difference between taxonomic and phylogenetic classification?

midkidd   677   3 Replies

fireman

How does one trace the ancestry of an animal using phylogenetic trees?

How does one trace the ancestry of an animal using phylogenetic trees?

Also, does anyone have any phylogeny-related ideas for my AP Biology long-term research project?

lester   638   2 Replies

rkoch