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nirvana33 [79]
3 years ago
15

You are working as a botanist in a tropical forest and have located a small plant that has never before been seen or classified.

 You learn from your dissection of this plant that it has vascular tissue. Yet, over the lifespan of the plant as it grows and matures in your greenhouse, you observe that it never produces seeds. It does produce small cluster of spore-forming capsules on the underside of structures that resemble leaves. You classify the plant as a ____.
Biology
1 answer:
vichka [17]3 years ago
8 0

Answer: Pteridophyte

You classify the plant as a pteridophyte

Explanation:

Pteridophytes are known to have the following:

- many cells (multicellular) and vascular bundles

- true roots, stems, and leaves

- do not produce flower throughout their lifespan

- they are mainly terrestrial plants, while few are aquatic

- do not produce seeds but reproduce asexually by formation of spores

Examples are ferns

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Some dragons can breathe fire. NOT breathing fire (B) is dominant to breathing fire (b). Complete the Punnett square
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About the question:

I failed to find the Punnett square, so in my answer and explanation, I will include different cross options.

Answer and Explanation:

Due to technical problems, you will find the complete answer and explanation in the attached files

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3 years ago
A carrier mother (XHXh) of hemophilia marries a normal father(XHY). *Use allele letter H What are the mothers and fathers genoty
ZanzabumX [31]

Answer: The mother of the man can be either XHXH or XHXh and pass her normal allele to the son and his father can be either XHY or XhY, he only passes his Y chromosome. The mother of the woman can be XHXH or XHXh and the father could be XhY, then she could have inherited the normal allele from the mother and the affected allele from the father. But also, the mother of the woman could be XHXh or XhXh and the father could be XHY, so in this case she could have inherited the normal alele from the father and the affected allele from the mother.

Explanation:

Hemophilia is an inherited bleeding disorder in which the blood does not clot properly. This can cause bleeding either spontaneously or after an injury.

<u>It is related to the X chromosome and it is recessive for females</u>, this mean they need both affected alleles to develop the trait. <u>Males only need one recessive allele because they only have one X chromosome</u>. This means that females need both parents to be at least carriers (although one or both can also have the disease or both recessive alleles). While males inherit it only from the mother, either she is a carrier (one recessive allele) or she has the disease (both recessive alleles). Then the mother passes the X chromosome with the affected allele to the son, and that son only receives the Y chromosome from the father, which does not have the gene that determines this disease.

If the mother is a carrier, her genotype is XHXh, being XH the normal allele and Xh the affected allele. She does not have hemophilia because she has a dominant allele. The father is XHY, so he does not have the disease because his only allele is normal (dominant)

The mother of the man can be either XHXH (she can only pass a normal allele) or XHXh and pass her normal allele to the son (in this case, the recessive allele is not inherited by chance.) His father can be either XHY or XhY, he only passes his Y chromosome which is not related to the disease. The mother of the woman can be XHXH or XHXh and the father could be XhY, then she could have inherited the normal allele from the mother and the affected allele from the father. But also, the mother of the woman could be XHXh or XhXh and the father could be XHY, so in this case she could have inherited the normal alele from the father and the affected allele from the mother.

4 0
3 years ago
The type of RNA that delivers amino acids to the ribosome during protein synthesis is tRNA.a) trueb) false
DENIUS [597]

Answer:

A). True

Explanation:

tRNA, which means transfer RNA is one of the three types of RNA known in nature. The tRNA is found in the ribosome, where it plays a pivotal role in protein synthesis (translation). Transfer RNA is the RNA responsible for reading the nucleotides in the mRNA codon and carrying the amino acid that corresponds those codons to the ribosome.

The tRNA has a 3-dimensional structure that allows it to carry anticodon that reads codon and also carry amino acids on opposite ends. Hence, according to this question, tRNA is a type of RNA that delivers amino acids to the ribosome during protein synthesis.

6 0
3 years ago
Will award 70 points!
Verizon [17]

Answer:

Net photosynthesis- 3mm/20min- 1.5mm/10min

Cellular respiration- 1mm/15min- 0.66mm/10min

Gross photosynthesis = Net photosynthesis + Cellular respiration = 1.5+0.66 = 2.16 (mm/10min)

Rate of photosynthesis = (gross photosynthesis)6 = 2.16 *6 = 12.96 mm/hr

As we are measuring rate of photosynthesis in hr ,we should multiply gross photosynthesis with 6 (as we measured gross photosynthesis for 10 min).

Explanation:

4 0
3 years ago
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