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natima [27]
3 years ago
12

Do Seedless vascular plants use spores to reproduce?

Biology
2 answers:
Neporo4naja [7]3 years ago
5 0

Answer:

In seedless vascular plants, such as ferns and horsetails, the plants reproduce using haploid, unicellular spores instead of seeds. The spores are very lightweight (unlike many seeds), which allows for their easy dispersion in the wind and for the plants to spread to new habitats.

sineoko [7]3 years ago
5 0

Answer:

Seedless vascular plants reproduce through unicellular, haploid spores instead of seeds;

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Transcription chain elongation is thought to generate ____ supercoils ahead of the transcription bubble and _____ supercoils beh
frosja888 [35]

Answer:

a. positive; negative

Explanation:

Transcription is the process of forming an RNA molecule from a DNA template molecule. In this process, the strands of DNA separate and one serves as a template for RNA, while the other is inactive. At the end of the transcript, the tapes that have been split back together again.

The transcription process is divided into three steps: initiation, stretching and termination

During the stretching phase, transcription chain elongation occurs. In this phase the enzyme called RNA polymerase starts to move through the DNA molecule, unwinding its helix and producing an increasingly lengthened RNA molecule. The already transcribed DNA is rewound almost immediately, recomposing its double helix. This process is called the elongation phase.

During this process, it is believed that positive supercoils  are generated ahead of the transcription bubble and  and the negative supercoils behind it.

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3 years ago
The visual examination of the fundus of the eye with an ophthalmoscope is known as?
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Answer:

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6 0
2 years ago
How can high levels of saturated fat and cholesterol in the diet affect a person's health?
hoa [83]
There are various diseases and disorders that could arise from high levels of saturated fat and specfically bad cholesterol. From the renowned, cardiac arrest, atherosclerosis,  hepatic steatosis, neurological diseases like cerebrovascular diseases; ischemia and hemorrhagic stroke, disoriented weight size and gain -obesity is also caused by the high concentrations of fat and bad cholesterol.
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4 0
3 years ago
A zebra mussel is discovered in a lake in Pennsylvania for the first time. Why would this make an ecologist worried?
Elena L [17]

Answer:

D

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4 0
3 years ago
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