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alexandr1967 [171]
2 years ago
15

Xylem is a plant tissue made up of elongated cells stacked end to end the length of the plant's stem. How does xylem help a plan

t survive?
A) exchange gases with the atmosphere

B)pulls water and nutrients up the stem from the soil

C)collects sunlight for the plant to use during photosynthesis

D)transports glucose made during photosynthesis to cells throughout the plant
Biology
1 answer:
Eddi Din [679]2 years ago
6 0

Answer:

Ur dad

Explanation:

Ur dad

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Analyze the data about nitrogenous base content of DNA from various species. Percentages of Bases in Five Organisms Source of DN
Troyanec [42]

Answer:

When analyzing data on the nitrogenous base content of the DNA of various species, the claims are supported by the data:

  • <em>In any one species, the amount of adenine closely approximates that of thymine.  </em>
  • <em>In any one species, the amount of guanine closely approximates that of cytosine.  </em>
  • <em>The amounts of A, T, G, and C in DNA varies from species to species. </em>

<em>(options A, B and D)</em>

Explanation:

Organizing the data has to:

<u>Source of DNA      A            T            G            C </u>

Streptococcus    29.8       31.6        20.5       18.0

Yeast                   31.3        32.9       18.7         17.1

Herring                27.8       27.5       22.2       22.6

Human                30.9       29.4       19.9        19.8

E. Coli                  24.7       23.6        26.0      25.7

DNA is the molecule that contains the genetic information of each species, formed by sequences of nitrogenous bases Adenine, Thymine, Cytosine and Guanine.

Since Adenine and Thymine -as well as Cytosine and Guanina- are complementary, the percentage of them will be very similar in each DNA molecule.

The genetic information -which determines the physical and functional characteristics of each organism- is encoded in the DNA and is different for each species, so the percentages of nitrogenous bases vary from species to species.

5 0
3 years ago
Last one! free points, and Brainliest for whoever can give me 5 bunny facts!
enyata [817]

Answer:

they are mammals

they classify as rodents

males are called buck or jack

young rabbits are called bunnies

grown bunnies are called rabbits

Explanation:

idk if this was what u wanted

6 0
2 years ago
Read 2 more answers
Why do plants at the bottom of a pond grow better than plants at the bottom of a lake
STALIN [3.7K]

Since ponds are typically shallower than lakes, this allows more sunlight to reach pond plants than lake plants. By getting my sunlight, these pond plants can photosynthesize more efficiently.

7 0
3 years ago
Complete the sentences by matching the names of trees to the appropriate blanks. Terms may be used more than once. 1. Conifer le
Butoxors [25]

Answer:

Evergreens are plants that maintain their leaves in all seasons and include trees such as pine, cedar, and mango. 2. Deciduous trees lose their leaves seasonally and include trees such as elm and maple. 3. Hardwoods reproduce using flowers and have broad leaves: hardwoods include trees such as maple, elm, and mango. 4. Conifer leaves are generally thin and needle-like, while seeds are contained in cones. Conifers include pine and cedar.

Explanation:

  • Evergreens plants: These plants keep the foliage the year. They change leaves during their whole life, but the frequency in which they change them is not the same as the deciduous plants, and this event does not coincide with any season in particular. They do not need to lose leaves during unfavorable seasons. These species develop different strategies and adaptations to go through unfavorable weather conditions. They have special leaves to avoid water loss or freezing, some of them are thin and needle-like shaped, or might be covered with wax or fuzz. Example: Pine, cedar.
  • Deciduous plants: During autumn and winter, deciduous trees from temperate forests need to store different nutrients that will be used for the plant growth during the following spring.  Storaging nutrients in leaves require too much energy and constant photosynthetic activity, which might be very difficult for the plant to support during these colder seasons. To confront this situation, these species have developed some strategies such as leaves senescence. The tree stops supplying water and nutrients to the leaves, so these last ones stop producing chlorophyll. When this molecule is completely lost, other pigments that were masked by chlorophyll, show up.  Before senescence occurs, pigments such as carotenoid, anthocyanin, or pheophytin reveal yellow, orange, red, purple, and brown tones, which are the characteristic autumn colors. Example: maple and elm
  • Angiosperm characterize for their reproductive strategy, producing flowers and fruits, and dispersing by their seeds. These last ones are located in an ovary (in the fruit). These species attract pollinizers through the flower characteristics and reward and attract animals with their fruits, guaranteeing seeds dispersion. Example: maple and mango
  • Gymnosperm does not develop flowers nor fruits. They have naked seeds on the surface of scams or leaves. Seeds frequently develop in pine cones, which are specialized branches. Example: Pine, cedar
  • Conifer belongs to the Gymnosperm.
5 0
3 years ago
Infants require many nutrients early in life, including lipids such as fats. A low-fat diet for infants is not recommended becau
zloy xaker [14]

Answer:

Lipid intake through diet is important for the infants as it helps in growth, development.Brain, retina and nerve tissues contain long chain PUFA(Poly unsaturated fatty acid) that is provided through the intake of lipids.

Explanation:

Dietary lipid is traditionally be consider as an important and essential nutrient for the infants as they provide many function in the body of infants They helps for proper growth and development of the infant.Thus selection of dietary lipid is important.Brain, and other neural tissue contain long chain poly unsaturated fatty acid that are important for producing eicosanoid. They are powerful mediators as they helps in different functions that are performed by cells and tissues.More over fat provide energy that are required for doing various physiological activities.

4 0
2 years ago
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