Đặc điểm cấu tạo cơ quan sinh sản ở thực vật

Answers

Answer 1

Là bộ phận sinh sản của thực vật, hoa có chứa nhị (phần hoa đực) hoặc nhụy (phần hoa cái), hoặc cả hai, cộng với các bộ phận phụ như lá đài, cánh hoa và tuyến mật. ... Nó bao gồm một túi phấn (bao phấn) và một sợi dài hỗ trợ. (Tôi hy vọng điều này có ý nghĩa !!!)


Related Questions

How has farming had an impact on the environment.​

Answers

Answer:

Pollution

Explanation:

Constantly rebuilding and damaging the earth

Answer:

Pollution

Explanation:

Constantly rebuilding and damaging the earth

Explanation:

plssssssssssssssssssssssssssssshelpppppppppppppppppp

Answers

Answer:

10

Explanation:

the water rose by 10 ml so it must be 10 g/ml

How does biologist define life, and what were the origins of life?

Answers

Answer: A few theroies include:

Explanation:

Started with one tiny rock (aka Earth) then other rocks ran into each other till carbon, hydrogen, built up preasure to make algea and other crustation.   Started with a cell and the magnetic pull brought lava together then dirt then mold the grass.

Life can be defined as any system which is capable of performing the functions such as eating, metabolizing, excreting, and responding to external stimuli.

What is Life?

Life is co-eternal with the matter and it has no beginning. Life arrived on the Earth at the time of the Earth's origin or are shortly thereafter in life. Life arose on the early Earth by a series of the progressive chemical reactions. Such type of reactions may have been likely or may have also required one or more highly improbable chemical events in nature.

Life is also defined as any system which is capable of performing functions such as eating, metabolizing, excreting, breathing, moving, growing, reproducing, and also responding to the external stimuli.

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Which form of electromagnetic radiation effects us most

Answers

Answer:

I guess it's wrong if it is, sorry

Explanation:

The Electromagnetic Spectrum. The most common form of radiation we are all familiar with is visible light

what is a risky behavior​

Answers

Answer:

Risky behavior refers to engaging in activities that can endanger someone's life

Which of the following describe ecosystem services?

I. Farmland
II. Pollution
III. Seed disbursement

I only
II only
I and III
II and III

Answers

Answer:

III) Seed Disbursement and I) Farmland

Explanation:

Answer:

C

Explanation:

Which sugar is called fiber in humans?

1: Starch

2: glycogen

3:cellulose

Answers

Answer:

Starch is the answer . . .

Answer:

starch is the answer.....................................

The process by which plants produce food is known as photosynthesis. This process requires sunlight, carbon dioxide, chlorophyll and ……………..

A) Sodium B) Potassium C) Water D) Oxygen

Answers

I think the answer is water

Answer:

Option C. Water is the correct choice here.

Explanation:

Photosynthesis is the change of water and CO2 to glucose in the presence of chlorophyll and sunlight.

Select the correct answer from each drop-down menu. are , which contain the information for building .

Answers

Answer:

Building information modeling is a process supported by various tools, technologies and contracts involving the generation and management of digital representations of physical and functional characteristics of places

Explanation:

copy and paste

What is photosynthesis​

Answers

Photosynthesis is a process used by plants .In this process plants use Carbon Dioxide,Water and sunlight and produces Carbohydrates(Glucose) and OxygenIt happens in chloroplasts of leaves

[tex]\boxed{\sf CO_2+H_2O+Sunlight\longrightarrow C_6H_{12}O_6+O_2}[/tex]

photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.[tex]\pmb{ }[/tex]

Emita su opinion sobre: Si existe o no existe relación entre la anatomía y fisiología humana.​

Answers

Answer:

La hay porque si bien la anatomía humana se basa simplemente en los humanos, la fisiología tiene que ver con todas las criaturas vivientes con diferentes tipos de partes del cuerpo.

Explanation:

At what speed is a 0.5 kg ball hit by Tom if he applies 300 J of kinetic energy to the bat?

Answers

Ggedvjku hedge gjejdigr djtnelckvnr w w tienen ten

5.- Circule el par de bases nitrogenadas
incorrectas: A-T, T-C, C-G, A-C, T-A

Answers

circule incorrectas: T-C, A-C

bases nitrogenadas correctas: A-T, C-G, T-A

The higher the temperature of water, the faster an egg will cook.

Answers

The answer is True. When higher is the temperature of water, the faster an egg will cook.

explain briefly the 3 stages of theory development​

Answers

The law of three stages is an idea developed by Auguste Comte in his work The Course in Positive Philosophy. It states that society as a whole, and each particular science, develops through three mentally conceived stages: (1) the theological stage, (2) the metaphysical stage, and (3) the positive stage.

Space starts at _____________miles above Earth.

Answers

Space starts at 12 miles above earth

Ricky recently moved from a quiet rural area into a more chaotic urban location for work. He has been struggling to sleep due to the loud noise of police sirens at night, but has noticed that the sirens have been disturbing his sleep less as he gets used to the noise. Which of the following terms best describes what Ricky is experiencing?
a. Sensitization
b. Habituation
c. Operant conditioning
d. Extinction

Answers

Answer:

吧b

Explanation:

Ricky has been struggling to sleep due to the loud noise of police sirens at night, but has noticed that the sirens have been disturbing his sleep less as he gets used to the noise. Ricky is experiencing habituation.

What is habituation?

habituation is a type of response where complete elimination of a particular response or  zero frequency of occurrence occur.

If the stimulus continues  for an additional number of trials, although no changes occur but  the response will exhibit lower levels of recovery.

Habituation is a non-associative learning in which an automatic decrease in the intensity of a response occur which is repetitive, weak stimulus, without serious consequences, for example, ignoring stimuli

Habituation defines as  the fading of the response over the course of monotonous stimulation, and sensitization refers to processes of increased response.

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Which approach is most directly concerned with assessing the relative contributions of heredity and experience to personality development?
a. biological
b. cognitive
c. biopsychosocial
d. psychodynamic

Answers

The biopsychosocial approach is most directly concerned with assessing the relative contributions of heredity and experience to personality development (Option C)

The Biopsychosocial Approach is an interdisciplinary model which was first developed by George Engel and Jon Romano (1977).

The biopsychosocial approach is a type of model that recognizes biological (inheritance), psychological, and social (environmental) factors as well as the interactions among these factors to understand the health and illness state of an individual.

Social factors include economical, environmental, and cultural factors (e.g. work concerns and family issues).

Biological factors include both genetic and biochemical factors.

According to this approach, both mind and body determine the health of the subject.

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What is unusual about the peptide bond compared to the other covalent bonds that form the polypeptide backbone?

A) The side chains only face internally, excluding them from interacting with water.

B) The single bonds on either side of the peptide bond cannot rotate, making the peptide backbone very rigid.

C) There is an amino group on one end of the backbone and an aldehyde group on the other.

D) Peptide bonds behave like double bonds in terms of stability and lack of movement of atoms around the bond.

Answers

Answer:

D

Explanation:

A peptide bond is also known as amide bond which is formed between two amino acid molecules. An amino acid contains two functional groups; a carboxylic acid group and an amino group. ... The resulting linkage between two amino acid molecules is called a covalent bond.

The unusual about peptide bond  is ( D );  Peptide bonds behave like double bonds in terms of stability and lack of movement of atoms around the bond

The polypeptide is the Non-R group of amino acids polymers that consists of

N-C-C-N-C-C-N , and the polypeptide backbone allows for the backbone to backbone hydrogen bonding and it acts as a contributor to the secondary structure of the protein.  

also the linkage between amino acid molecules is called a covalent bond.

Hence the unusual about the peptide bond when compared to other covalent bonds that form the polypeptide backbone is  Peptide bonds behave like double bonds in terms of stability and lack of movement of atoms around the bond

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What makes a scientific experiment reliable?

Answers

If experimental results contrary to a theory’s predictions are observed, scientist first evaluate whether the experimental design was sound, and If so they confirm the results by independent replication

name the parts of the diagram of a kidney ​

Answers

Explanation:

Each kidney consists of an outer renal cortex, an inner renal medulla, and a renal pelvis.

Answer:

Internally, the kidney has three regions: an outer cortex, a medulla in the middle, and the renal pelvis in the region called the hilum of the kidney. The hilum is the concave part of the bean-shape where blood vessels and nerves enter and exit the kidney; it is also the point of exit for the ureters.

10.9) Are humans ectotherms?
If not, what are they?

Answers

Answer:

no they arent

Explanation:

they are endotherms

What is the temperature of each thermometer. I already got the first one. I just don’t know the difference between Celsius and Fahrenheit.

Answers

Answer:

hope it helps

Explanation:

b: 51.6 degrees

c: 22.5 degrees

d: 14 degrees

e: -11.5 degrees

f: 66 degrees

what are the 6 kingdoms of species?

Answers

Answer: Plants, Animals, Protists, Fungi, Archaebacteria, Eubacteria.

:)

Rocks , soil trees water air and life .How do all the parts affect each other? Give some
examples

Answers

Answer:

Water, air, soil, trees are all element which makes the living on Earth possible.

Explanation:

Water is one of the most important natural resources flowing from forests.

Soil provides nutrients, water, oxygen and heat to natural land areas.

Air is a third critical resource for humans, plants, animals and all other organisms within a natural area. 

write any four uses of water agriculture • Answers​

Answers

Water is essential for our lives as 70%of our body contains water.Water is used for agriculture without which we can't exist.Water is also used for cooking. Water is used for infrastructure.

Answer:

water is use as follow:

Explanation:

To cook

To wash dishes

To drink

without water plants cannot survive

Which event is occurring because of increasing carbon dioxide levels in the atmosphere?
A an increase in the greenhouse effect
В.
a decrease in oxygen levels in the atmosphere
o
C. a decrease in the thickness and size of the ozone layer
о
D
an increase in the amount of sunlight that reaches Earth's surface

Answers

Answer:

A. an increase in the greenhouse effect

Explanation:

Carbon dioxide controls the amount of water vapor in the atmosphere and thus the size of the greenhouse effect.

Effect occurs when two drugs are taken together and the combined results is less the the effect of each drug taken separAtely

Answers

Answer:

true

Explanation:

this should be the answer

Question 10

If you see caribou, lynx, bears, and conifers, you are probably in

Answers

Answer:

great danger

beacause lynx and bears can eat you alive

If you see reindeer, lynx, bear, and conifers, you're probably in a biome taiga.

What is taiga?

The Taiga or boreal forest is a biome formed mainly by conifer-type plants, so it is also called the Coniferous Forest.

The climate in this region is subarctic, characterized by a very cold, long and dry winter with temperatures reaching -50º C. Summer is short and humid, days are longer and temperatures can reach 20º C.

With this information, we can conclude that if you see reindeer, lynx, bear, and conifers, you are probably in a taiga.

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Enzymes are a type of protein. Like other proteins, they are made of small building blocks (MONOMERS!) called

Answers

Answer:

perdón yo no hablo inglés

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