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3 years ago

Which reproductive method is the only one available to mosses and ferns?

Biology

1 answer:

nlexa [21]3 years ago

6 0

Answer:

alternation of generation with both sexual and asexual reproduction

Explanation:

Both moss and fern belong to kingdom plantae. The gametophyte is dominant in moss and sporophyte in fern. The gametophyte produces games that fertilize forming an embryo. The embryo develops into a sporophyte that produces spores which then germinate forming a plant.

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All the following statements about uncontrolled cellular division are true EXCEPT

larisa86 [58]

Answer:

Explanation:

You can not control your DNA.

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Transposable elements make up 44% of the human genome. What is thought to be their function?

AfilCa [17]

Transposable elements are considered to be responsible for vast range of genome diversity and gene silencing.

Explanation:

Transposable elements are short sequences of DNA that have the ability to move from one location to another in the genome. During this process they copy themselves.

The entire process carried out by transposable elements to copy themselves and move from one location to another is called transposition.

Transposition may result in mutation and is potentially a major source of genome diversity and change. If a transposon inserts itself into the coding region of a gene,it interrupts the coding sequence and inactivates the gene expression.

In addition to this, a transposable element may contain transcription or translation termination signal that will block the gene expression downstream of insertion site.

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3 years ago

Study this image of space. A cloud of gas and dust. What object is shown in this image? a nebula a red giant a supernova a neutr

zubka84 [21]

Answer: The image to be studied is missing from the question,so I attached it to my answer,please click on the attachment provided to view the image being studied.

The correct answer to the question is option A.

NEBULA

The object shown in the image is known as a nebula.

Explanation: A nebula is found in interstellar space,it has a form of a giant cloud of dust. When some stars goes into dying process,they explode throwing out gas and dust which forms a nebula.(a supernova remnants nebulae).

Some nebulae(singular form of nebula) are also found where new stars are being formed.

Nebula are the basic building blocks of the universe,they are made up 90% hydrogen,10% helium and other heavier elements in trace amounts from which stars and other solar systems are made.

Nebula exist in 5 distinct types namely;

Emission nebulae, Reflection nebulae,Dark nebulae, Planetary Nebulae and supernova remnants Nebulae.

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