Mycorrhizal associations with plants: are beneficial because they increase the a
ID: 322637 • Letter: M
Question
Mycorrhizal associations with plants:
are beneficial because they increase the availability of limiting nutrients like nitrogen and phosphorus.
are harmful associations formed between plant leaves and bacteria.
are harmful because the fungi act as parasites that steal nutrients and give nothing in return.
D. are beneficial because they allow for photosynthetic algae or cyanobacteria to live inside a fungal host and provide food to them.
Which of the following best describes the cells that make up the mushroom on your favorite mushroom pizza?
A.
yeast
B.
haploid
C.
dikaryotic
D.
karyogamous
Which of the following is NOT a significant finding from studying fossils from the Cambrian explosion?
A.
Examples of all extant phyla are represented.
B.
Diversity of animal forms reveal possibly failed experiments in evolution.
C.
Tetrapods evolved during the Cambrian period.
D.
Organisms with distinct eyes and heads are represented for the first time in the fossil record.
You are a skeptical scientist who is not convinced the phylogeny of animals is accurate. You wish to reconstruct the animal phylogeny using molecular sequence data. Which of the following genes would be the best choice?
A.
genes involved in flagella development
B.
genes for collagen
C.
genes for mitochondrial cytochromes
D.
genes for jaw development
are beneficial because they increase the availability of limiting nutrients like nitrogen and phosphorus.
B.are harmful associations formed between plant leaves and bacteria.
C.are harmful because the fungi act as parasites that steal nutrients and give nothing in return.
D. are beneficial because they allow for photosynthetic algae or cyanobacteria to live inside a fungal host and provide food to them.
Which of the following best describes the cells that make up the mushroom on your favorite mushroom pizza?
A.
yeast
B.
haploid
C.
dikaryotic
D.
karyogamous
Which of the following is NOT a significant finding from studying fossils from the Cambrian explosion?
A.
Examples of all extant phyla are represented.
B.
Diversity of animal forms reveal possibly failed experiments in evolution.
C.
Tetrapods evolved during the Cambrian period.
D.
Organisms with distinct eyes and heads are represented for the first time in the fossil record.
You are a skeptical scientist who is not convinced the phylogeny of animals is accurate. You wish to reconstruct the animal phylogeny using molecular sequence data. Which of the following genes would be the best choice?
A.
genes involved in flagella development
B.
genes for collagen
C.
genes for mitochondrial cytochromes
D.
genes for jaw development
Explanation / Answer
Q.Mycorrhizal association with plants:
A. are beneficial because they increase the availabilty of limiting nutrients like nitrogen and phosphorous
Reason:- Mycorrhiza is a symbiotic association of fungal hyphae and the roots of higher plants. Fungal component obtains carbohydrates and other nutrients from the roots of the plant and in return supplies mineral elements such as phosphorous to it.
Q. NOT a significant finding from studying fossils from the Cambrial explosion
C. Tetrapods evolved during the cambrian period
It is incorrect because tetrapods evolved during devonian period.
Q. The best choice to reconstruct the animal phylogeny using molecular sequence data is
C. genes for mitochondrial cytochromes
because mitochondrial DNA is a conserved sequence which conserves all the mutation took place in past and provides a better picture of any divergence occured during the evolution of the animal.
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