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olga_2 [115]
3 years ago
11

How does xylem is helpful for plants

Biology
2 answers:
Kruka [31]3 years ago
7 0
Xylem and phloem make up the big transportation system of vascular plants. As you get bigger, it is more difficult to transport nutrients, water, and sugars around your body. You have a circulatory system if you want to keep growing. As plants evolved to be larger, they also developed their own kind of circulatory systems. The main parts you will hear a lot about are called xylem and phloem.

It all starts with a top and a bottom. Logically, it makes sense. Trees and other vascular plants have a top and a bottom. The top has a trunk, branches, leaves, or needles. The bottom is a system of roots. Each needs the other to survive. The roots hold the plant steady and grab moisture and nutrients from the soil. The top is in the light, conducting photosynthesis and helping the plant reproduce. You have to connect the two parts. That's where xylem and phloem come in.

Zippy Xylem
Close look at rings of a tree The xylem of a plant is the system of tubes and transport cells that circulates water and dissolved minerals. As a plant, you have roots to help you absorb water. If your leaves need water and they are 100 feet above the ground, it is time to put the xylem into action! Xylem is made of vessels that are connected end to end for the maximum speed to move water around. They also have a secondary function of support. When someone cuts an old tree down, they reveal a set of rings. Those rings are the remains of old xylem tissue, one ring for every year the tree was alive.
tresset_1 [31]3 years ago
5 0
Xylem is a very useful tissue in plants used for transportation of water from roots of a plant to its upper part for its proper growth
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Fragmenting one large park or preserve into many small parks with human habitation in between them is most likely to lead to whi
barxatty [35]

Answer:

The correct answer is a. Reduction in species diversity

Explanation:

In habitat fragmentation, the large area of forest is divided into many smaller patches which reduce the area of habitat for species live there. This Fragmentation of habitat occurs mainly due to human activities like making highways and roads in the area.

This separates species member from each other which reduces the gene flow between that which can lead to inbreeding depression in a species and extinction of species can occur.  

Cutting trees and human activities can alter the environment negatively which can cause extinction of some species that reduce species diversity. So the correct answer is a.

3 0
3 years ago
Newsweek in 1989 reported that 60% of young children have blood lead levels that could impair their neurological development. As
Kamila [148]

Answer:

The answer is 83.38%.

Explanation:

The probability of young children having blood levels that impair their neurological development is given as 60% in the question. To find the probability of at least 5 children out of 10 in a sample having said blood levels, we need to use the binomial probability.

n represents the total number of children in the sample so n = 10 and p is the probability of the children having blood levels causing the problem which is 60% so p = 0.6.

We want the probability of it being observed for 5 or more children and that is P(x\geq 5). If we subtract the P( x\leq 4) from 1, which is the probability of not observing the condition in 5 or more children, we will have the P(x\geq 5).

1 - P(x\leq 4) = 1 - pbinom(4, 10, 0.6) which are the probability range in the function, the sample size and the probability of observing the condition respectively.

The result is 1 - 0.1662 = 0.8338 which means that the probability that is asked is 83.38%.

I hope this answer helps.  

8 0
3 years ago
Why is water necessary to your body
dusya [7]

Answer:

it's necessary because your body uses water in all its cells organs and tissue. water helps you to keep moving and functioning.

7 0
2 years ago
2. The first step of the light<br> reactions, (blank)<br> strikes the chlorophyll in (blank)
kkurt [141]

The first step of the light

reactions, (photons)

strikes the chlorophyll in (photosystem II)

4 0
2 years ago
What reptile is the most vocal with some species able to communicate more than 20 distinguishable messages through sound alone?
EleoNora [17]
The most vocal reptile ARE THE CROCODILES.
Crocodiles use different types of calls, smells and water behavior to communicate with one another. Scientists have discovered that some species of crocodiles can pass across up to twenty messages using sound alone. The sounds made can be used to signify threat, distress or it can be used to attract others for courtship purpose. Crocodiles also communicate through smells and through water behaviors.  
8 0
3 years ago
Read 2 more answers
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