composition on photosynthesis​

Answers

Answer 1

Answer:

The effects on pigment composition and photosynthesis of low temperature during growth were examined in the third leaf of three chilling-tolerant and three chilling-sensitive genotypes of Zea mays L. The plants were grown under a controlled environment at 24 or 14 °C at a photon flux density (PFD) of 200 or 600 μmol m–2 s–1. At 24 °C, the two classes of genotypes showed little differences in their photosynthetic activity and their composition of pigments. At 14 °C, photosynthetic activity was considerably reduced but the chilling-tolerant genotypes displayed higher photosynthetic rates than the chilling-sensitive ones. Plants grown at 14 °C showed a reduced chlorophyll (Chl) a + b content and a reduced Chl a/b ratio but an increased ratio of total carotenoids to Chl a + b. These changes in pigment composition in plants grown at low temperature were generally more pronounced in the chilling-sensitive genotypes than in the tolerant ones, particularly at high PFD. Furthermore, at 14 °C, all the genotypes showed increased ratios of lutein, neoxanthin and xanthophyll-cycle carotenoids to Chl a + b but a reduced ratio of β-carotene to Chl a + b, especially at high PFD. At 14 °C, the chilling-tolerant genotypes, when compared with the sensitive ones, were characterized by higher contents of β-carotene and neoxanthin, a lower content of xanthophyll-cycle carotenoids, a lower ratio of xanthophylls to β-carotene, and less of their xanthophyll-cycle carotenoid pool in the form of zeaxanthin. These differences between the two classes of genotypes were more pronounced at high PFD than at low PFD. The results are discussed in terms of the relationship that may exist in maize between pigment composition and the capacity to form an efficient photosynthetic apparatus at low growth temperature.

Explanation:

Hope it help you.


Related Questions

How do we teach internal motivation?

Answers

Encouraging intrinsic motivation in students is a challenge, but it's possible. Kids have to convince themselves that they really want to do a particular activity.Rethink Reward. Science has proven that for simple, mechanistic tasks, reward incentivizes students to perform well, but for tasks that require thinking outside the box, reward leads to poor performance. Atlassian Autonomy. The Australian software company Atlassian holds “FedEx Days” where engineers are expected to work on anything they want for 24 hours, then report back to the group. Many of their most lucrative ideas are born in these “overnight deliveries” of creativity. Try something like this with your students. Make Mastery Cool. As Ashton Kutcher revealed to us all in a recent Teen Choice Awards speech, “The sexiest thing in the world is being smart.” A Higher Purpose. Students who feel that they are working towards the greater good, or something larger than themselves, may have an easier time staying motivated. Make students feel like education is a choice, not a requirement. You know the bunch of non-engaged students. As simple as it sounds, remind them that they are making the right choice by showing up and working hard. Don’t use fear of punishment as a motivator. Despite what you read in The Prince, fear is not always the best motivator, especially for learners. The fear of failing a subject certainly has its place but should not be used as a substitute for intrinsic motivation. For learning management, expect self-direction, not compliance. It happens – classes get out of hand. Even online ones. But motivating students to follow the rules by threatening or goading won’t help your students in the long run. Help them become more self-directed, so that they end up complying as a result of their own genuine efforts. Visualize and Conquer. Have your students visualize a moment in their lives when they felt very proud of themselves for an accomplishment. Then let them loose on a task. Make every student feel capable. This may be a simple point, but it’s surely one of the most important. Some students feel incapable of completing a task before they even try it. The power of “You can do it” has perhaps been diluted over the years. Try “You’re capable,” which speaks not only to the task at hand but to the student’s sense of self-worth. Cooperation and Competition: Intrinsic motivation can be increased in situations where students gain satisfaction from helping their peers and also in cases where they are able to compare their own performance favorably to that of others. Help students trust themselves to succeed. When students trust themselves to succeed at a task, they are more likely to challenge themselves in other situations. Be sure to recognize student achievement in terms of personal worth and not just success on a particular assignment; this will encourage the student to carry that confidence into other learning situations. Make the attainment of goals probable but uncertain. Everyone is motivated to complete easy, reward-based tasks. It’s the more difficult ones, often accompanied by delayed gratification, that make us want to give up before we begin. On a day to day basis, aim for goals that are achievable but require just enough work to keep students engaged. It’s a fine line between interest and disengagement, but it’s this tension that keeps us all motivated. Give accurate and authentic performance feedback. A large part of continued motivation is feedback, but be careful not to make it personal. They should change their behavior, not their self-worth, as a result of constructive criticism.  

What was Napoleon’s title when he presented France with the Napoleonic Codes?

Emperor
General
First Consul
Prime Minister

Answers

Answer:

he was called the first consul

Explanation:

when he presented France in 21 March, 1804 he was called the first consul

Napoleon was  titled as  "First Consul", when he presented France with the Napoleonic Codes. Hence, Option C is correct.

Who was Napoleon?

Napoleon was born in the year 1769, also known as Napoleon Bonaparte, and later known by his regnal name, Napoleon I. He died in the year 1821. In the early 19th century, he was a French military leader and emperor who conquered much of Europe.

He was one of those political leaders who rose to prominence during the French Revolution and led several successful campaigns during the Revolutionary Wars. He was also famous for his brilliant skills as a strategist and leader of men into battle.

Thus, Option C is correct.

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Which invention made factory environments in Florida more pleasant?
A: Air conditioning
B. Central heating
C: Spinning Mule
D;Two-speed bicycle

Answers

Answer- A: Air conditioning

Explanation-
Florida is usually very muggy, hot, and humid in the summer, this causes buildings to increasingly get warmer minute by minute because they didn’t have air conditioning. Also factories themself are warm due to the machines and all the people inside. But, once the air conditioning came around, this caused an easier environment to work in.

True or false? Congress has FORMALLY amended the constitution many times over the years by passing thousands of statutes

Answers

Answer:

true

Explanation:

Although I enjoy chocolate ice cream, strawberry is my favorite flavor

Answers

Answer:

Chocolate is the best

Explanation:

Becuase it is

You can master the cello if you practice daily

Answers

True if you practice for 6 year and for 5 hours a day yes

If the authorized sources do not provide sufficient guidance, you should
(Select the best answer)
A) Rely on your memory
B) Ask the OCA
C) Ask your Quality Assurance Manager
D) Ask your Security Manager or Facility Security Officer (FSO)

Answers

In a situation where the authorized sources do not provide sufficient guidance, the best thing is D. Ask your Security Manager or Facility Security Officer (FSO).

This question here relates to classified information. It should be noted that security classification guides are the main sources for the derivative classification.

When the authorized sources do not provide sufficient guidance, one should ask their Security Manager or Facility Security Officer (FSO).

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According to Bandura, your self-efficacy is: A. the tendency to make attributions such that you perceive yourself favorably. B. the perception that you control your own fate. C. the set of cognitive processes with which you observe, evaluate, and regulate your behavior. D. your judgment of how well you can deal with particular situations.

Answers

According to Bandura, your self-efficacy is: B. the perception that you control your own fate.

The Psychologist, Albert Bandura proposed that Self-efficacy is people's belief in their ability to control the events that happen in their lives. They have the power and do not attribute this to any other forces.

People with the sense of self-efficacy are confident people who motivate themselves to achieve great things. They also have higher chances of realizing their pursuits.

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Which of the following is a form of government
in which laws are made and administered by
lords who inherit their lands and titles?
A. monarchy
B. direct democracy
C. representative democracy
D. aristocracy

Answers

A. Monarchy

A monarchy is handed down by royalty/relation

Exclusive governing party systems
A. allow for dissent.
B. control all policymaking.
C. are always conflictual.
D. are found in democratic states.

Answers

Answer:

B. Control all policy making.

Explanation:

I cause acid rain ______.
A) water pollution B) air pollution
C) land pollution. D) noise pollution​

Answers

Answer:

B

Explanation:

Answer: B) air pollution

Brainliest pls if correct!

What was the purpose of the writing that was developed on oracle bones in ancient China?

Answers

Answer:The Shang people used oracle bones to communicate with ancestors and deities, who were believed to have the power to bestow fortune, disasters and guidance on the living world. At the royal court, the oracle bones divination was carried out by trusted 'diviners' or by the king and other members of the royal family.

Facts about oracle bones: Oracle bones are pieces of ox scapula and turtle plastron, which were used for pyromancy – a form of divination – in ancient China, mainly during the late Shang dynasty. Scapulimancy is the correct term if ox scapulae were used for the divination, plastromancy if turtle plastrons were used.

Facts about china: China, officially the People's Republic of China, is a country in East Asia. It is the world's most populous country, with a population of more than 1.4 billion. China spans five geographical time zones and borders 14 different countries, the second most of any country in the world after Russia.

Hi, I hope this helps you if not please feel free to make it sound better and more professional, bye I have great day/night

What are the three requirements for being in the House of Representatives?

Answers

Answer:

You have to be 25 year or older, and you have to be a U.S citizen for at least 7 years, and have inhabitant of the state he or she represents.

Explanation:

illustrate the role of the people in Nepal's unification campaign in brief?​

Answers

Bise Nagarche suggested King Prithivi Narayan Shah to collect fund to buy weapons from 12000 roofs of Gorkha State. The youths between 16 to 30 participated in the war. Citizens of Dahachok supported Prithivi Narayan Shah to attack Nuwakot. ...

definir racismo, sin palabras raras

Answers

Answer:

El racismo es la creencia de que grupos de humanos poseen diferentes rasgos de comportamiento correspondientes a atributos heredados y pueden dividirse en función de la superioridad de una raza sobre otra.

how was communism emerged in russia​

Answers

Answer:

im not sure if this is right but its modern form, communism grew out of the socialist movement in 19th-century Europe. As the Industrial Revolution advanced, socialist critics blamed capitalism for the misery of the proletariat—a new class of urban factory workers who labored under often-hazardous conditions.

what will you say to convince the people who go to exorcist for treatment ?​

Answers

An ounce of protection is worth a pound of cure, is especially true in the spiritual realm. The exorcism and deliverance ministry usually addresses problems arising from a lack of spiritual protection or someone purposely opening the door to evil

What i will do to convince the people who go to exorcist for treatment is that he should try personal healing.

Basically, the art of exorcism and deliverance ministry are used to addresses problems arising from a lack of spiritual protection or someone purposely opening the door to evil.

However, the person affected can engage is personal spiritual practice to expel the evil spirit out of he or herself.

In conclusion, what i will do to convince the people who go to exorcist for treatment is that he should try personal healing.

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2. Describe the connection between classroom management strategies and collaboration with students and colleagues in creating a safe, inclusive learning environment and preventing disruptive behavior in the inclusion classroom.

Answers

There is direct and significant relationship between classroom management strategies and collaboration with the students and colleagues.

There is direct connection between classroom management strategies and collaboration with students and colleagues in creating a safe learning environment and preventing disruptive behavior in the inclusion classroom because classroom management strategies is a tool used for making the class environment good for learning.

If there is no management in the classroom then the students are unable to learn the knowledge for which they are attend the class so we can conclude that there is direct and significant relationship between classroom management strategies and collaboration with the students and colleagues.

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the measures to raise positive attitudes towards the Cooperatives of Nepal. in 4 points​

Answers

Answer:

The government of Nepal has embraced cooperatives as one of the three pillars of the economy, cognizant of their power and evolving prospects to contribute to poverty reduction, service delivery, gender equality and good governance.

Across the world today, cooperatives are increasingly seen as key players at the grassroots level, effectively organizing farmers and small businesses, providing much-needed financial support, and empowering the poor by creating jobs and income-generating activities. It is therefore not surprising that the government of Nepal has embraced cooperatives as one of the three main pillars of the economy, alongside the public and private sectors.

Cooperatives are present across diverse sectors including agricultural, financial and savings, consumer, multipurpose, electricity and health, among others.

Nepal has a long tradition of informal community-based groups engaged in savings and credit, grain savings and labour exchanges. Since their formalization in the mid 1950s, cooperatives have grown significantly, are found in diverse sectors and play an important part in the development of the Nepalese economy by integrating people from different ethnic, social and marginalized backgrounds. In the current times, the cooperative movement is focused on poverty alleviation while promoting women’s participation in cooperatives in membership and leadership roles.

Explanation:

Is it possible to bring positive change in North Korea? If so, how? If not, why not? Should the United States help? Explain.

Answers

Answer:

ang ganda q

Explanation:

because I'm pretty

4. If at 120°west, a person might be eating breakfast, then
another person at 120° east might be eating dinner

Answers

Answer:

sorry i don't undstand the question

In the past two years, the situation in the United States has been turbulent, with C O V I D-19's reasons, and the reasons for the previous presidential election. Some of them have begun to become independent. In Texas, the headquarters of the Republican Party, many local republican government members believe that the election results are fraudulent, so they are very dissatisfied with Biden and the Democratic Party. Later, they violated Biden's administrative instructions for many times. Up to now, even local U.S. congressmen openly support independence and claim that after independence, they will take all the space agency, oil and the army away. However, local people said that if Texas was really independent, Biden would send troops immediately.

Answers

Answer:

biden sucks

Explanation:

worst american president. has everyone following him like a bunch of sheeps. he tells everyone to get the vaccine when him, and most of the government  have never stepped foot by a vaccine

how old is the world

Answers

Answer:

the world is 4.543 billion years

Explanation:

Answer:

4 and a half billion years old

Explanation:

What is being illustrated in the map regarding U.S. imperialism (30 POINTS)

A) non-interventionism
B) moral diplomacy
C) Chinese Exclusion Act
D) sphere of influence

Answers

Answer:

c c will be the answer ,---

which one do u think it is on the question on the picture

Answers

Answer:

G

Explanation:

The method of sociological research best suited to identify cause and effect relationships is the
O Survey method
O Group method
O Participant observation method
O Experimental method

Answers

D. Experimental Method

Why is it necessary to follow social rules ? write briefly.​

Answers

Answer:

Human beings need norms to guide and direct their behavior, to provide order and predictability in social relationships and to make sense of and understanding of each other's actions. 

Their behavior, their attitudes, their actions

Make a list of the functions of legislative and explain any three of them briefy​

Answers

Answer:

passing laws, establishing the government's budget, confirming executive appointments, ratifying treaties

Explanation:

paki follow lng po sa akin

After graduating from high school, Sue chose to attend college rather than join the work force. The opportunity cost of her decision is the money she would
have made if she had chosen a job over school.
Which statement represents a direct causal relationship?

ОА. Sue's need for social interaction made her willing to bear the opportunity cost of going to college.

ОВ. Sue's desire for a higher education made her willing to bear the opportunity cost of going to college.

OC. Because Sue had superior technical skills, she was willing to bear the opportunity cost of going to college.

OD Because Sue had a superior grade-point average, she was willing to bear the opportunity cost of going to college.

Answers

Considering the available options, the statement that represents a direct causal relationship is that "Sue's desire for higher education made her willing to bear the opportunity cost of going to college."

What does the opportunity cost?

Opportunity cost is the loss of one choice when another alternative is taken as the choice.

Therefore, given that Sue chose to attend college rather than join the workforce, the direct causal relationship here is that Sue's desire for higher education made her willing to bear the opportunity cost of going to college.

Hence, in this case, it is concluded that the correct answer is option B.

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what steps will you take to prevent land pollution. write any three points.​

Answers

Answer:

reduce, reuse, recycle

Explanation:

Reduce mean to cut back on the amount of trash we generate. Reuse means to find new ways to use things that otherwise would have been thrown out. Recycle means to turn something old and useless (like plastic milk jugs) into something new and useful (like picnic benches, playground equipment and recycling bins).

Answer:

prevents are

1.donot use the more harmful chemical

2.don't open factories any where it may convert the land into desert

3.planting trees

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