what is not a trend evident to plant evolution

Answers

Answer 1

Answer:

b. spores of two types to spores of one type

Explanation:

Spores of two types to spores of one type is not the trend to plant evolution because first the spores of one type is present in living organisms but with the passage of time evolution occurs that will leads to formation of  spores of two types happen in living organisms. There are types of spores present in plants such as microspores, which produces male gametophytes, and megaspores, which produce female gametophytes while on the other hand, spores of one type is present in plants having asexual reproduction.


Related Questions

Which of the following mutations could lead to constitutive expression of the genes of the lac operon? View Available Hint(s) Which of the following mutations could lead to constitutive expression of the genes of the lac operon? A mutation in the lac-Z gene A mutation in the lac-Y gene A mutation in the operator sequence A super repressor mutation Submit Part B Which of the following best describes the biological role of the lac operon? View Available Hint(s) Which of the following best describes the biological role of the lac operon? It ensures that bacterial cells produce lactose only when no other food sources are available. It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment. It ensures that a cell produces enzymes involved in lactose metabolism in a constitutive manner. It prevents other sugars from being metabolized until all available lactose has been used. Submit Part C The placement of the operator sequence between the promotor and the structural genes is critical to the proper function of the lac operon. View Available Hint(s) The placement of the operator sequence between the promotor and the structural genes is critical to the proper function of the lac operon. True False

Answers

Options for part A are as follows:

A) A mutation in the operator sequence

B) A mutation in the lac-Z gene

C) A mutation in the lac-Y gene

D) A super repressor mutation

Answer:

The correct answer:

Part a - A mutation in the operator sequence

Part b - It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment

Part C. true.

Explanation:

part a:

If there is a mutation in the operator sequence leads to prevent binding of the repressor which leads to allowing constitutive expression of the genes various conditions.

part b:

The biological role of the lac operon makes sure that the cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment

Part c:

RNA polymerase cannot transcribe the structural genes due to the repressor binds to the lac operator, therefore, the proper function of the lac operon is possible when the placement of the operator sequence between the promotor and the structural genes.

Hello who’s good at biology guys I need someone to help me with the test

Answers

I Dont Even Know If Am Good In Biology Or Not

But Some Chums Might Give You A Hand

Water is carried from the roots upward to every part of a vascular plant by
cells walls.
O cuticle.
phloem.
xylem
Use the concept map below to answer the following question.

Answers

The answer is cell walls

1. Based on the examples in the table, how do opinions differ from facts?

2. How do facts differ from theories?


3. Although they're different, what relationship exists between facts and theories?


4. What do all the theories in the table have in common?

5. How do laws differ from theories?

6. If someone told you that plate tectonics is just a theory and that it hasn't been accepted as a law yet, how would this
information conflict with what you understand about theories and laws?

Answers

1. Opinions are not always right; facts are.

2. Theories are sometimes right, but sometimes they are either wrong or a little off; facts are on point and with the exact answer.

3.  A theory is a scientific explanation of a fact.

4. They all have a good amount of information; also they say approximately to let you know it's not the exact answer.

5. A law is more like a prediction of what will happen if the situation is given and it's shown by the mathematical equation; Theory describes what happens. (Happened).

6. This would try to go against my understanding but it won't happen because I know that theories don't become laws or vice-versa; theories remain theories and law remain laws.

I need help please help

Answers

Answer:

its d cause

Explanation:

Correlative Conjunctions are pairs of words used to connect two parts of a sentence with equal value.

What adaptation helps the pine tree reduce water loss?

leaves
thorns
Seeds in cones
Woody stems

Answers

Answer:

leaves

Explanation:

The needles of pines, like those of other conifers, are well-adapted for growth in dry environments. In particular, the outer surface of pine needles has a thick waxy layer, called a cuticle, which reduces evaporative water loss.

Answer: Option (A) leaves

Explanation:

Pine trees thankfully have needles, which are thin, waxy leaves that enable them to make food year-round. The waxiness of the needles helps evergreens not lose water to evaporation.

Hope it helps! Good luck!!!

According to the passage, which of the following topics of study was the most crucial to his final analysis?
The study of statistics and probabilities

The study of plant varieties

The study of agriculture

His study of the experimental method

Answers

Answer: The study of plant varieties.

Explanation:

This question relates to the studies that Gregor Mendel, founder of modern genetics, performed at the University of Vienna.

Experimenting on pea plants, Gregor Mendel was able to establish a lot of the rules of heredity that we know today even though his research was not fully appreciated or understood during his own life.

He credited the study of plant varieties to have been most crucial to his final analysis because farmers had been crossbreeding varieties for millennia to bring about better traits in plants.

Which of the following is a density-dependent factor?
(a)habitat size
(b)volcanic eruptions
(c)cold weather
(d)food availability

Answers

Answer:

A

Explanation:

Answer: (D) food availability

Explanation: its the only one that is density dependent, all the others are density independent.

Which of the following best describes an environmental advantage of urbanization?
А
Individuals living in cities have more varied employment opportunities than individuals living in rural areas.
B
Individuals living in cities have greater access to health care than individuals living in rural areas.
с
Individuals living in cities usually have greater access to fresh, local agricultural products than individuals living in rural areas.
D
Individuals living in cities usually have a lower transportation carbon footprint than individuals living in rural areas.

Answers

D
Answer: A I am sure of Ik
Wallahi it will be so cool

Individuals living in cities have more varied employment opportunities than

individuals living in rural areas is an environmental advantage of

urbanization.

Urbanization involves the increase in the industrialization thereby leading

to the increase in population to the area. Cities usually have a higher

degree of urbanization due to presence of various industries and access to

the best facilities.

The increase in industries during urbanization makes varied employment

opportunities present and an advantage over the rural areas.

Read more on https://brainly.com/question/2277541

4. How does a sound wave vibrate?

Answers

When sound waves move through the air, each air molecule vibrates back and forth, hitting the air molecule next to it, which then also vibrates back and forth. The individual air molecules do not "travel" with the wave. They just vibrate back and forth.

How are spring tides different from Neap Tides. Give at least 2 reasons _______

Answers

Answer:

Seven days after a spring tide, the sun and moon are at right angles to each other. This produces moderate tides known as neap tides, meaning that high tides are a little lower and low tides are a little higher than average. Neap tides occur during the first and third quarter moon, when the moon appears "half full.

Signal Sequences: 1)A signal sequence is made of: a.Nucleotides b.Amino acids c.Lipids d.Carbohydrates 2)All protein synthesis starts on ribosomes that are located in the _________________. 3)If a molecule lacks a signal sequence it will end up in the ______________ 4)Proteins with a nuclear localization sequence (NLS) are generated on ribosomes located in the ___________________. 5)Proteins with a mitochondrial signal sequence are generated in ribosomes located in the _________________.

Answers

Answer:

1. Option B

2. cytoplasm

3. cytosol

4.  nucleus

5. mitochondria

Explanation:

1. Option B

A signal sequence consists of hydrophobic  amino acids .

2. cytoplasm in prokaryotes

3. cytosol

4.  nucleus

5. mitochondria

How much has the greenhouse gas carbon dioxide increased in the air just in the last few years? ITS DUE IN A FEW HOURS PLEASE HELP!

Answers

Answer:

approximately 2.3 parts per million (ppm) per year

Explanation:

In 2019, the global amount of atmospheric carbon dioxide (CO2) has been estimated at approximately 410 parts per million (ppm). These levels are higher than at any time in the last 800,000 years, and it has been estimated that in 2025 the CO2 levels will be higher than at any time in the last 3.3 million years. In 2018, there has been an increase of approx. 2.5 ppm, the same increase observed between 2017 and 2018. Moreover, the average increase of the CO2 levels in the atmosphere between 2009 and 2018 was 2.3 ppm each year.

In the year 2000, more than 225 million acres of forests were burned throughout the
world. A forest fire can have a dramatic effect on the plants and animals that live in a
forest.
• Describe one negative and one positive effect of a forest fire.
One way of controlling how severe a forest fire becomes is to deliberately set small
fires in what is known as a "controlled burn."
• Describe two ways that a controlled burn can benefit a forest.
Name the type of ecological succession that would occur after after a forest fire.

Answers

Answer:

In 1960, the U.S. Forest Service started keeping detailed records of damage caused by wildfires. ... Between 2000 and 2013, nearly 161 million acres were consumed by wildfires -- more in 13 years than in the previous 40 years, combined. ... they would have been had fuel sources been able to burn off naturally over time.

Missing: 225 ‎| Must include: 225

Explanation:

Mutations that change the bases in a base pair are ____________.

Answers

Answer:

A point mutation is when a single base pair is altered. Point mutations can have one of three effects. First, the base substitution can be a silent mutation where the altered codon corresponds to the same amino acid.

Explanation:

mark brainliest

Question 10 of 10
Why do fungi need to live in moist areas?
A. Their large surface areas make them dry out easily.
B. They can only reproduce sexually.
C. They are unable to photosynthesize.
D. Their filaments make it difficult to absorb nutrients.

Answers

Answer:

A. Their large surface areas make them dry out easily.

Explanation:

(A.P.E.X)

What does the field of proteomics study? The structure and function of cellular lipids and how they interact to contribute to traits. The structure of carbohydrates and how they are converted into a useable form of energy for the body. The interaction between cellular proteins and how they make up the bulk of the cell membrane. The structure and function of cellular proteins and how they interact to contribute to traits. The structure of prions and how they can lead to various diseases within the body.

Answers

Answer:

The structure and function of cellular proteins and how they interact to contribute to traits.

Explanation:

Proteomics is a research area that studies proteomes and their interactions with other cellular components (e.g., transcription factors involved in DNA-protein interactions, ribonucleoprotein complexes involved in RNA-protein interactions, etc). A proteome can be defined as the entire set of proteins synthesized by an organism. The proteomics field allowed us to identify common protein functions (structural and enzymatic functions), as well as understand how protein expression (which is regulated by genetic and environmental factors) influences cellular metabolic activities (e.g., iron uptake).

Which energy source produces less negative
environmental impacts

A)Renewable Energy Sources
B)Fossil Fuels

Answers

Renewable energy sources:)

Answer:

renewable energy sources !

Explanation:

fossil fuels are bad for our enviroment :)

Which animal in a pond food chain would be on the same trophic level as a snake in a grassland ecosystem?
(A) Algae
(B) mosquito larva
(C) fish
(D) racoon

Answers

I think a raccoon because both are predators

In a pond food chain ecosystem, a fish feed on mosquito, a producer. The fish may get eaten by a racoon, which in turn is consumed by a snake. In a pond, algae is autotroph. So the correct option is D (racoon).

What is trophic level in ecosystem?

Trophic level is defined as the ranking of an organism in the food chain and which differ from a value of 1 for primary producers to 5 for marine  humans or mammals.

Racoon is mammal and omnivorous whereas the snake is carnivorous animal.  In a pond ecosystems, the biomass pyramid is inverted.

For more details regarding pond ecosystem visit:

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What year did the first "Earth Day" occur?
Please help

Answers

Answer:

April 22, 1970 was the 1st earth day

Answer:

in spring 1970

Explanation:

because of this one person named Gaylord Nelson

What effect does planting trees and bushes on a steep hill have?



A- It makes the hill a good habitat for animals.

B- It provides oxygen to the soil.

C- Over time, it will help the hill grow taller.

D- It helps stop erosion.

Answers

Answer:

D- It helps stop erosion.

Explanation:

Erosion can be defined as a geological process which typically involves the wearing out of earthen (soil) materials and the transportation of these materials by natural forces like water, wind, etc. Soil erosion is greatest when the soil is steep.

The steepness of a body such as river or stream refers to the downward slope or gradient of the body of water.

Generally, the steepness of a body affects the rate at which other materials would flow or move around. Thus, the steeper a river or stream, the greater would be its rate of erosion. Other factors that affect the rate of erosion in an area include the following; farm management, rainfall, climate, soil type, soil cover, landscape, type of wave, crops, rock strength and position of coast.

In order to mitigate or stop the rate of erosion in an environment, trees and bushes should be planted on a steep hill because they will obstruct the free flow of water, as well as absorbing it.

which two places is aggregate generally found?

floodplains and alluvial fans
alluvial fans and mines
mines and beneath the topsoil
beneath the topsoil and above the topsoil

Answers

Answer: Floodplains and Alluvial Fans

Explanation: Took the quiz and got it right. Hope this helps!

Answer:person above is right

Explanation:

answer A

the cytoplasmic extensions that, together with the cell body, provide the main receptive surfaces for neurons are the:

a: axons
b: soma
c: dendrites
d: synapses

Answers

I’m pretty sure it’s dendrites
:)

What is a frog's habitat?
R. the flies that it eats
S. the green skin coloration
T. a forest pond
V. the total number of frogs in the area​

Answers

The answer is T
Expiation

Help me please!!!!!!!!!!!!!!!!!?

Answers

Answer:

points .,.

thx .,. Explanation:

hy please make some questions from this passage please i want to ask my students thank you​

Answers

Explanation:

1) Write the balanced chemical equation of photosynthesis.

2) What is the role of chlorophyll in the process of photosynthesis?

3) What happens to the light energy that is absorbed by the chlorophyll?

why is night blindness regarded as a non infectious disease​

Answers

Answer:

Explanation:

stay away from the dark frfr sh1 creepy dog

What are are used to build enzymes

Answers

Answer:

they are made from amino acids

Enzymes are made from amino acids, and they are proteins. When an enzyme is formed, it is made by stringing together between 100 and 1,000 amino acids in a very specific and unique order. The chain of amino acids then folds into a unique shape.

What do memory B and T cells do when they encounter a pathogen for the second time?​

Answers

Answer: When B cells and T cells are first activated by a pathogen, memory B-cells and T- cells develop.

Throughout the lifetime of an animal these memory cells will “remember” each specific pathogen encountered, and are able to mount a strong response if the pathogen is detected again. This type of immunity is both active and adaptive.

Active immunity often involves both the cell-mediated and humoral aspects of immunity as well as input from the innate immune system.

Explanation: Hope it Helps

When b cells and T cells are first activated by a pathogen ,memory b cells and T cells develop

3. When the mRNA is translated, the order of its codons determines the order of amino acids in the resulting polypeptide O a. True O b. False​

Answers

Answer:

True

Explanation:

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Hint: In the long run, firms produce where ATC is at a minimum. c) What is the long-run equilibrium price charged in the market for binders? d) What is the long-run equilibrium output of the binder industry?(Hint: Assume that the firms will meet the demand at the long run price.) e) Approximately how many binder sellers will there be in the long-run equilibrium (round your answer to the nearest whole number)? : Which type of lymphocyte produces and secretes antibodies?1) Memory B-lymphocyte 2) Memory T-lymphocyte 3) Natural killer cell 4) Plasma cell 5) Cytotoxic T-lymphocyte Which factor affects the size and shape of the barrier island? a. Littoral drift b. Human alterations c. Ocean waves d. Erosion e. All of the above are correct Determine the Taylor series for the function f(x) around the point Xo by calculating the derivatives of the function at xo. 4.. f(x)=- x = 0; 4 4+x' Solucin: (-1)*(*)*, |x| Let A and B be two matrices of size 4 X 4 such that det(A) = 1. 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This information allows you to calculate exactly how high the required t annual return on this company's stock should be that would correctly compensate the investors for the amount of systematic risk that they would be facing when buying this f a stock. Your calculated required annual return for the company's stock equals ----percent Put the answer in percent, rather than in decimals. Do NOT use "%" in your answer. Jarett & Sons's common stock currently trades at $38.00 a share. It is expected to pay an annual dividend of $1.00 a share at the end of the year (D1 = $1.00), and the constant growth rate is 5% a year.What is the company's cost of common equity if all of its equity comes from retained earnings? Do not round intermediate calculations. Round your answer to two decimal places.%If the company issued new stock, it would incur a 14% flotation cost. What would be the cost of equity from new stock? Do not round intermediate calculations. 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