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Zolol [24]
3 years ago
5

Hi. Please answer these questions :

Biology
2 answers:
polet [3.4K]3 years ago
4 0
<h2>Answer:</h2><h2>Barbados flowers</h2>

<em><u>Caesalpinia pulcherrima is a species of flowering plant in the pea family Fabaceae, native to the tropics and subtropics of the Americas. It could be native to the West Indies, but its exact origin is unknown due to widespread cultivation. </u></em>

<em><u>Scientific name: Caesalpinia pulcherrima</u></em>

<em><u>Scientific name: Caesalpinia pulcherrimaFamily: Fabaceae</u></em>

<em><u>Scientific name: Caesalpinia pulcherrimaFamily: FabaceaeKingdom: Plantae</u></em>

<em><u>Scientific name: Caesalpinia pulcherrimaFamily: FabaceaeKingdom: PlantaeHigher classification: Caesalpinia</u></em>

<em><u>Scientific name: Caesalpinia pulcherrimaFamily: FabaceaeKingdom: PlantaeHigher classification: CaesalpiniaOrder: Fabales</u></em>

<em><u>Scientific name: Caesalpinia pulcherrimaFamily: FabaceaeKingdom: PlantaeHigher classification: CaesalpiniaOrder: FabalesRank: Species</u></em>

musickatia [10]3 years ago
3 0
<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.

<h2>_____________________________________</h2>

\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.

<h2>_____________________________________</h2>

\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 />
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It is estimated that every year more than 15 million babies are born too early. The lungs of these premature infants are often i
Triss [41]

Answer:

The development of artificial placentas can be a solution that would allow the survival of premature babies, favoring the complete development of the organs -such as the lungs- that would allow their viability.

Explanation:

The main problem facing a premature newborn - before 30 weeks of gestation - is his inability to breathe, due to an immature respiratory system.

During pregnancy, the mother provides nutrients and oxygen to the fetus through the placenta and the umbilical cord, which in turn receives carbon dioxide and waste products that eliminates the future baby. At birth, the baby should be able to breathe and nourish itself.

Some circumstances can cause premature birth, with the consequences of a fragile baby who may not be able to breathe due to the immaturity of his lungs.

<h3>Question 1: State how an artificial placenta would be of benefit to the lungs of premature infants. </h3>

In the case of a newborn whose lungs are not suitable for breathing, an artificial placenta provides conditions similar to the maternal uterus that allow the complete development of the respiratory system, that is, the formation of the bronchial tubes, bronchioles, pulmonary alveoli, as well as the production of surfactant, a substance that prevents alveolar collapse during breathing.

Knowing that a premature baby cannot return to the mother's womb, it is proposed to extend the period of development by introducing the newborn in a device that simulates the conditions of the uterus and the placenta.

<h3>Question 2: Explain why the lambs’ blood must be filtered as it circulates through the artificial placenta. </h3>

In the artificial placenta, also called biobag, the umbilical cord of the lambs is connected to a gas exchange machine - similar to that of extracorporeal circulation - capable of providing blood, nutrients and oxygen, in addition to eliminating waste products and dioxide carbon

The liquid contained in the biobag has a composition similar to that of the amniotic fluid and provides nutrients to the lamb. External monitors connected to the lamb provide all the necessary information about the vital signs of the developing animal.

<h3>Question 3: State one reason why premature lambs were likely used as model organisms in this study rather than mice.</h3>

Lambs have been chosen as a model to perform studies of artificial placenta because their fetal development is very similar to that of humans although their maximum gestation time is shorter.

In lambs, full gestation lasts up to 22 weeks, and lung development occurs between weeks 15 and 17, while in the human fetus it occurs between weeks 21 and 26. However, the stages of development are quite similar.

Since so far only the use of artificial placentas has been achieved for a maximum of 30 days, the relative rapidity with which lung development occurs in lamb fetuses allows its study, and the results of tests in lambs can be extrapolated to the fetus Human in the future.

Learn more:

Authorization for animal research brainly.com/question/8226295

8 0
4 years ago
What organelle is Excretory please help ASAP only if you know the answer
GenaCL600 [577]

Answer:

Vacuole

Explanation:

Good for you, I just got done with the cell in science so congrats!

;)

5 0
3 years ago
Read 2 more answers
Sharks have internal fertilization. true or false.
OLga [1]
It is true they do have internal fertilization. This is also one of the reason why it is easy to differentiate between a male or a female shark on birth due ot internal fertilization. <span />
4 0
4 years ago
Select all of the following statements that are true about lymph nodes.
Oksanka [162]
1 and 4 possibly 5 too
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3 years ago
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What type of digestion is used to break down large food particles by chewing or grinding?
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Your teeth brake down down large food particles by chewing or grinding.
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