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WITCHER [35]
4 years ago
11

What is the main function of veins in a leaf?

Biology
2 answers:
sdas [7]4 years ago
4 0

Answer;

Transport of substances


Explanation;

-Veins have vascular tissues, that is the xylem and the phloem. Xylem tissue transports water and mineral salts to the leaf, while phloem transports manufactured food from the leaf to other parts of the plant.

-Leaves need water for photosynthesis and the water is transported from roots to leaves through xylem.

-Veins are spread all over the leaves ,so they can easily transport water to all the cells of leaves.

-After the completion of photosynthesis in a chloroplasts, glucose is formed which may be used for cellular respiration or stored in form of starch. Phloem transports the glucose to other parts of the plant for cellular respiration;

anygoal [31]4 years ago
3 0
The main function of the veins in a leaf is to transport substances. These veins are like tubes and help to transport water to all areas. The correct answer is C. 
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ipn [44]
C) transporting glucose to the cells where it is broken down and energy is released.

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3 years ago
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Acceleration: How long will it take a cyclist
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Answer:

It will take 27 seconds for a cyclist to stop completely.

Explanation:

Initial velocity of the cyclist= u = 13.5 m/s

Acceleration of the driver = a  = -0.50 m/s^2

Final velocity of the cyclist = v = 0

Duration of time in which 13.5 m/s velocity is changed to 0 = t = ?

Using first equation of motion:

v = u + at

0 =13.5 m/s+(-0.50 m/s^2)\times (t)

-13.5 m/s=-0.50 m/s^2\times t

t=\frac{-13.5 m/s}{-0.50 m/s^2}=27 s

It will take 27 seconds for a cyclist to stop completely.

8 0
3 years ago
Function
andrezito [222]

Answer:

Epidermis, in botany, outermost, protoderm-derived layer of cells covering the stem, root, leaf, flower, fruit, and seed parts of a plant. The epidermis and its waxy cuticle provide a protective barrier against mechanical injury, water loss, and infection.

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3 years ago
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The theory of evolution through natural selection unites biology in ways that are not usually evident to most peoplE) A non-biol
miv72 [106K]

Answer:

Organisms better adapted to the environment  

Explanation:

According to the evolutionary theory proposed by Charles Darwin in "The Origin of Species" (1859), the fittest organisms are those that are better suited to the environment (i.e., have a higher fitness). These organisms have more chances to survive and reproduce, and thereby they have also more chances to leave their genes in the next generation. This process is the central concept of evolution, and it is called natural selection. In consequence, evolution produces phenotypic changes or 'adaptations' that are inherited by organisms over generations, and certain traits are lost during this process.

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3 years ago
Орн
nlexa [21]

Answer:

very good question keep it up

8 0
3 years ago
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