Ephedragnetum and welwitschia. these three genera are the, Ask an Expert

Academics

Ephedra,Gnetum and Welwitschia. These three genera are the only representatives of this phylum. All three are somewhat unusual and have some characteristics such as xylem vessels resembling angiosperms. What features cause them to be classified as gymnosperm?

View complete question

Biology, Academics

Category:- Biology
Reference No.:- M9447303

Have any Question?Write your Review or question?

Related Questions in Biology

Two true-breeding stocks of pea plants are crossed one

Two true-breeding stocks of pea plants are crossed. One parents has red, axial flowers and the other has white terminal flowers; all F1 individuals have red, axial flowers. The genes for flower color and location assort ...

Question overview although it may sound like science 2520

Question: Overview: Although it may sound like science 2520, DNA and RNA technologies are already used in products today. In this discussion you will examine one specific product, organism, or technology in your initial ...

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 ...

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 ...

In some varieties of chickens as in snapdragons incomplete

In some varieties of chickens, as in snapdragons, incomplete dominance involves three colors: white (aa) blue (Aa), and black (AA). If a blue male chicken is mated with a blue female, what are the expected phenotypic and ...

How do i calculate the number of molecules needed for

How do I calculate the number of molecules needed for lethal dose? I am given the chemical name's LD50 and the "Estimated Lethal Dose (in grams) for 60kg human.

Why were there no large mammals around when the dinosaurs

Why were there no large mammals around when the dinosaurs occupied the land?

Question summaryfor readability please be sure to

Question: Summary For readability, please be sure to double-space your assignments. A new wild strain of nopal cactus has been identified as having remarkable promise to solve the international dietary manganese deficit ...

What is the complementary strand for 5-atgcatgcatgccc-3how

What is the complementary strand for: 5'-ATGCATGCATGCCC-3' How many turn(s) will this strand have? Are Eukaryotic cells always diploid during S phase whereas bacteria are only haploid at the end of DNA replication?

The current scientific defination of standard temp and

The current scientific defination of standard temp and pressure (STP) is: 0 degrees C and 1.00 bar pressure of a gas, using ideal gas law calculate the volume In L occupied by 1 mol of an ideal gas under these condition( ...

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