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dexar [7]
3 years ago
13

Epidermal cells, xylem, phloem, and connective tissue work together to make a leaf. This is an example of a(n) _________.

Biology
1 answer:
pantera1 [17]3 years ago
6 0

Answer:

A. Organ

Explanation:

Leaf is an essential part of plant that is involved in photosynthesis and also in exchange of gases. It is made up of epidermis, which is thick one, and is present at lower and upper surface of leaf. Between upper and lower epidermis, mesophyll is present while cuticle is present outside of the epidermis. Xylem and phloem and other connective tissues are arranged in the leaf in such way that it maintains the shape as well as effective transfer of nutrients and water in the leaf. Leaf is an organ, made up of all these tissues to form a complex structure.

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Which example is a trace fossil?
enot [183]

Answer:

B.) Dinosaur footprint

4 0
3 years ago
Explain the relationship between mutations, adaptations, natural selection, and extinction
Musya8 [376]

Mutations and natural selection cause adaptations. Mutations can cause instant adaptations, while natural selection is the process by which adaptations occurs over a series of generations.  

Adaptations are changes or processes of changes by which an organism or species becomes better suited for its environment.  

A mutation is an alteration of the DNA sequence. Sometimes such alterations code for the same amino acid sequence as the unaltered DNA strand during protein synthesis. In such a circumstance, the mutation is not detectable. However, other mutations alter the genetic code in such a way that a noticeable change in the trait that is associated with that gene is visible. Sometimes such mutations are advantageous and improve the organism's ability to survive in its environment.  

Natural selection is the process by which organisms with more advantageous traits (being camouflaged, being covered with the correct outer covering for the temperatures of that environment, stronger/ larger/ or faster to fight off or run from predators, etc.) are more likely to survive in a particular environment. Likewise, organisms less advantageous traits are more likely to die due to the pressures exerted by the environment (such as temperature, predators, illness, etc.). Therefore, the organisms with the advantageous traits that survive are more likely to survive to find a mate and reproduce. Thus, the advantageous traits are passed down to future generations.

<u><em>Hope this helps because I was learning about this today! </em></u>

<u><em></em></u>

<u><em>Soruces that might help: </em></u>

brainly.com/question/6836560

5 0
3 years ago
Read 2 more answers
To test for protein, you added Biuret solution and
OLEGan [10]

Answer:

Water sample showing pink/purple color is an error.

Explanation:

Biuret is a blue color reagent that changes its color to pink/purple whenever it detects protein in a sample. Water don't contain proteins so it should not show pink/purple color instead it should maintain the blue color. Food items generally contain proteins so it show pink/purple color but it showed blue color.

Error might have caused by wrong marking of the samples, test tube marked with Water might contain a mystery food while Mystery food tube might contain water.

7 0
3 years ago
Read 2 more answers
Study the information within the table below and then answer the following question.
adelina 88 [10]

Answer:

1:1

Explanation:

Purines: adenine (A), guanine (G)

Pyrimidines: thymine (T), cytosine (C)

Totals:

\left[\begin{array}{cccc}A&T&G&C\\82.4&80.8&69.1&68.4\\\end{array}\right]

\left[\begin{array}{cc}Purines&Pyrimidines\\151.5&149.2\\≈150&≈150\\ \end{array}\right]

8 0
3 years ago
How many main structures make up a neuron?
valentina_108 [34]
There are about 5 main structures that make up a neuron. <span>Basically, dendrites, cell body (soma), and axon. In addition, the part of the soma leading to the axon is called the axon hillock. Hope this answers the question. Have a nice day.</span>
4 0
3 years ago
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