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adelina 88 [10]
3 years ago
8

All the cak trees in a park belong to the same

Biology
1 answer:
Elena-2011 [213]3 years ago
3 0

Answer:

A. population

Explanation:

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Leaf anatomy. Did I label this diagram correctly?
grin007 [14]

Yes, you've labelled them correctly. For your reference, here are a few details for each leaf structure in the labels.

Cuticle: Also can be called as waxy cuticle, it can help reduce water loss from the leaf, since it is impermeable to water. It is usually thicker in the top of the leaf comparing to the bottom side of the leaf, as the sunlight shining on the top of the leaf can increase the chance of water evaporation.

Upper epidermis: They're cells which act as barriers. They can prevent the entry of diseases. They're also so thin and transparent that sunlight can be passed through.

Palisade mesophyll cells: They're the main location for photosynthesis, where the plant make energy by using sunlight. Chloroplasts, which absorbs sunlight, are mostly in these cells, (although they also exist in other leaf parts, but not as many).

Xylem and Phloem: They're collectively called the vascular bundle, or vein. Xylem transports water and mineral ions from soil to leaf, and phloem transports sugar and amino acids from places of production (leaf) to places for usage or storage.  

Spongy mesophyll cells: They also have a few chloroplasts, but not as many as palisade mesophyll cells. They're loosely packed to allow gas to pass through and exchange.

Lower epidermis: similar function to upper epidermis.

For further notice, note that the missing structures from the diagram are guard cells and stomata, usually lies in the lower epidermis. Stomata are pores which allows waste products from photosynthesis (oxygen) to evaporate away and carbon dioxide from the air outside to enter the leaf. Guard cells are just the cells around the stomata, controlling the size of the stomata to increase or reduce water loss/carbon dioxide intake.


3 0
3 years ago
What do the arguments for and against the use of stem cells in medical research share?​
Tema [17]

Answer:

Stem cell research can potentially help treat a range of medical problems. It could lead humanity closer to better treatment and possibly cure a number of diseases: ... Alzheimer's Disease. Heart Diseases, Stroke and Diabetes (Type 1)

5 0
3 years ago
Read 2 more answers
Suppose a gene has three exons, with 570 nucleotides in exon 1, 420 in exon 2, and 810 in exon 3. there is a variant in which ex
sladkih [1.3K]
Exon one has 570 nucleotides. Exon three has 810 nucleotides. We are not concerned about exon two because it is spliced out in the variant. There are 1380 nucleotides (570+810).  Each amino acid requires three nucleotides. One codon, or three nucleotides, codes for one amino acid. So 1380/3=690 amino acids. 
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Which of the following statements is true about viruses?
Akimi4 [234]

Explanation:

viruses may contain very small cells viruses can produce them quickly when they get a mode of transmission viruses have hyphae BUT viruses never eat any food so second statement is true....

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3 years ago
Select the correct answer.
malfutka [58]

Answer:

ureter, or ureters, are what Connect the kidneys to the bladder

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