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ss7ja [257]
4 years ago
11

How do plants produce oxygen and how is the oxygen used?

Biology
1 answer:
Ann [662]4 years ago
7 0

Answer:

Photosynthesis

Explanation:

The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.

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Which of the following is a device for measuring the height of a tree?
rewona [7]

Answer:

The answer is C basal area

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3 years ago
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While cleaning out the attic, you find a packet of seeds that your grandmother gathered from her garden. You plant them outside,
Phantasy [73]

Answer:b

Explanation:some seeds do not germinate during adverse conditions.this is called dormancy.this may occur due to hard seed coat.this seed coat prevents the entry of water and oxygen which are necessary for the plant to grow and germinate.

Water is a nessesary medium for essential metabolic reactions in the seed.the temperature at which is seed would germinate also varies.

Oxygen is needed for a germinating plant to obtain energy through respiration. The seed coat may also be so tough that they resist growth and expansion from taking place.

Seeds are able to break dormancy on their own.some may need to undergo natural processes that lead to softening.this process may be slow.some others may need heat or certain nutrients.

Germination of seed occurs when the dormant plant has taken in water and oxygen to show high metabolic activities leading to the formation of a seedling.

7 0
3 years ago
Chargaff's Rule. If there is 20% Adenine in the cell, what is the percentage of Thymine, Guanine, and Cytosine found in the same
Ulleksa [173]

Answer:

A= 20%

G= 30%

T= 20%

C= 30%

Explanation:

Recall that the sum of all nitrogenous bases in the DNA nucleotide is equal to 100%. And specific base pairings of Adenine to Thymine (A=T), and Cytosine to Guanine (C=G) must be equal.

So, the percentage of Adenine equal thymine, and that of cytosine equals guanine.

Now, A + T + C + G = 100%

So, if Adenine makes up 20% of the DNA nucleotides, Thymine is also 20%.

Then, 20% + 20% + C + G = 100%

40% + C + G = 100%

C + G = 100% - 40% = 60%

So, divide 60% by 2 to obtain the individual percentage of cytosine and guanine. Each will take 30%

Finally, A= 20%; G= 30%; T= 20%; C= 30%

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The Americans colonies became free and independent states explanation: because they declared independence
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