According to the pH scale, what is the approximate pH of seawater?

musickatia [10]

<h2>Hey There!</h2><h2>_____________________________________</h2><h2>Answer:</h2><h2>_____________________________________</h2><h2> $\huge{\textbf{Plant of Barbados}}$ </h2>

$\texttt{Caesalpinia pulcherrima}$ commonly called Pride of Barbados is found in the tropical regions. It's origin is still unknown but it is believed that Pride of Barbados is native to the West Indies and tropical America. It is widely cultivated in tropical regions throughout the world, which include tropic and sub-tropic region of America. It contains gallic and tannic acid which is poisonous to humans.

As <u>Cesalpinia pulcherria</u> is considered to be native of West Indies or North American region, and the Barbados is a small island country in West Indies, so that's how its common name comes that is the <u>Pride of Barbados</u>. Pride of Barbados belongs to the FAMILY - LEGUMINOSAE and to the SUB-FAMILY - FABACEAE.

$\huge\textbf{Placentation}$

The arrangement of placenta within the ovary is known as placentation. Ovules are attached to the inner wall of special tissues which are called placenta, the ovules are attached by the small stalk called funicules. There are several type of Placentations i.e. Basal, Marginal, central, axile, parietal.

Placentation in Plants of Barbados is Marginal, Marginal Placentation is when in which the placenta forms a ridge along the ventral suture(The line of fusion where the margins of the mega-sporophypl join) of the ovary and the ovules develop on two separate rows is known to have marginal placentation.

$\huge\textbf{Gynoecium}$

Gynoecium is a female whorl of the flower. It is composed of Carpels. Carpel is composed of Sigma, Style and Ovary.

Gynoecium in Pride of Barbados is Monocarpellary(one carpel), Ovary Superior(An ovary attached above other floral parts is termed superior), consist of one chamber(unilocular), many ovules are present along the margin. Seed is non-endospermic and Fruit is legume.

<h2>_____________________________________</h2><h2> $\huge\textbf{Flower:}$ </h2>

Flower is the reproductive organ of a plant. Morphologically it is very modified shoot. It is developed in the axil of leaf or at a.p.e.x of stem & branch. Flower is also produced in group which is called the inflorescence. If stalk called pedicel is present then flower is called pedicellate, If pedicel is absent Flower is called sessile. If small leaf or scale called bract is present then flower is called bracteate, if absent then called ebracteate.

Flower in Pride of Barbados is Pedicellate, complete, bisexual, zygomorphic, perigynous, showy and scented pentamerous.

<h2>_____________________________________</h2><h2> $\huge\textbf{Features}$ </h2>

Butterflies are the primary pollinators of Caesalpinia pulcherrima and the pollen is carried primarily on their wings.
Plant of Barbados is poisonous
It has some anti-inflammatory substances.
This plant grows in sunny regions thus It has great heat resistant feature
It can grow easily in very dry soil. This is due to its drought resistant features.

<h2>_____________________________________</h2><h2>Best Regards,</h2><h2>'Borz'</h2><h2 />

3 0

3 years ago

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What is the purpose of a cell wall in plant cells

Bogdan [553]

The cell wall is an outer protective membrane in many cells including plants, fungi, algae, and bacteria. Animal cells do not have a cell wall. The main functions of the cell wall are to provide structure, support, and protection for the cell

7 0

3 years ago

1) How is DNA condensed to form a chromosome?

Bumek [7]

Answer:

1) DNA is wrapped around histone proteins to form chromatin

2) The genes are the functional units, the segments between them are used for regulation

3) The genetic code is the language used, gene expression is how the cell uses the information, the activity of the genes.

Explanation:

1) DNA forms a DNA/protein complex called chromatin. It does this by wrapping around histone proteins. These histone proteins are usually present in the form of a nucleosome, which is a unit containing 2 copies of 4 histones (H2A, H2B, H3 and H4). The chromatin fibre at its most compact forms tightly coiled structures called chromosomes. These structures are only present during cell division. When the cell is in interphase (i.e. not dividing), the chromatin is not as tightly condensed, and instead the chromatin is more relaxed to allow the genes within to be expressed.

2) Genes are the functional units that the cell uses to make RNA and protein. The genes are first transcribed into RNA, which is processed and then translated into a polypeptide chain, which forms a complete protein that performs activities in the cell/tissue/organism. However, the whole genome does not form genes, there are regions that do not correspond to a gene. These regions are called "non-coding DNA" or sometimes even "junk DNA". However, that does not mean that these regions do not have important roles. The role of this DNA is usually in regulating the activity of the nearby genes. This DNA might contain important regulatory sequences such as promoters/enhancers/silencers that control how the gene is used by the cell, by for example, recruiting transcription factors or silencing proteins.

3) The genetic code is the language used by the cell. It explains how the cell can transcribe the information in the DNA, to RNA, process the RNA, and then translate the RNA into a polypeptide, and eventually a mature protein. In contrast, gene expression represents how the cell actually uses this information. Not all the genes are transcribed at the same time, instead, the activity of genes is carefully controlled to produce appropriate gene expression patterns, allowing the cell to properly perform its functions. Gene expression is hugely different between cells in an organism, for example the gene expression patterns of a muscle cell will be hugely different to that of a blood cell.

5 0

3 years ago

Ultimately, it is the environment which influences natural selection and thus the evolution of populations

shutvik [7]

Answer:

The given statement is true

Explanation:

Ultimately, it is the environment which influences natural selection and thus the evolution of populations. Is it true or false

Solution

It is true that environment influences the natural selection which is mainly governed by the presence of useful resources that can support an individual. Natural selection leads to emergence of useful trait that can help an individual in adopting traits that can make him/her fit thereby causing evolution of species.

Hence, the given statement is true

5 0

3 years ago

PLEASE ANSWER, YOU GET 10 POINTS BC I SELECTED 15!

siniylev [52]

Answer that does not describe the structure of an atom: The electron clod is a small and compacted space around the nucleus.

Bye and thx ;)

3 0

3 years ago

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