Answer:
When a seed, taken from a fruit, is planted and watered under the correct temperature, it breaks dormancy, and the embryo germinates; first, the root grows covered by root hairs, then the cotyledons appear, and finally, the plumule elongates to reach the light.
Explanation:
Fruit: It forms by the mature ovary of the flowers. This structure contains and protects the seeds in its interior. Its principal function is to transport seeds to a distant area away from the parental plant and let the new plant emerge under the correct environmental conditions. The fruit develops different strategies to accomplish its function. Seed: Refers to the fecundated and mature ovule. This structure is the typical dissemination and dispersion unit of spermatophyte plants. Seeds are formed of three tissues. An embryo. A seminal tegument that covers and encloses the latent embryo. And the endosperm -a nutritious tissue-. Seeds develop and grow under the protection of the fruit body. Embryo: It is formed after fecundation. It composes of growing cotyledons, an epicotyl, and a hypocotyl. The tegument and endosperm of the seed protect the embryo from dehydration and denutrition. Once the seed is in the correct place, the embryo grows and emerges. Cotyledon: The two first leaves of the embryo. They have reserve nutritive tissues to help the embryo grow. It also performs photosynthesis. The embryo usually develops one or two cotyledons and one radicule or root hair. Plumule: First shoot of the young emerging plant. When the embryo is growing, it elongates to reach more sunlight. Root hairs: Extention of the roots´ cells that look like hairs and whose principal function is to absorb nutrients and water from the ground. They can be found in the maturation area of the root. Germination: Process of development and the emergence of the embryo. These are a series of steps that must occur in the seed from the moment the embryo begins to develop until a newly emerged plantule is formed. For germination to occur, there must be the appropriate environmental conditions. Dormancy: Period in which an alive seed can not germinate because there is a condition inside the seed that does not allow germination to occur yet. The seed is in dormancy, but it keeps viability.Which part of the illustration depicts osmosis
Answer:
A ● I is the right answer
Explanation:
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Write a hypothesis showing the effect of nutrients in the soil on the growth rate of the tomato plant
Hypothesis:
As the tomato plant grows, nitrogen levels in the soil will decrease
A hypothesis showing the effect of nutrients in the soil on the growth rate of the tomato plant is As the tomato plant grows, nitrogen levels in the soil will decrease.
What is soil ?The soil is a mixture of different components which comprises minerals, organic matter, and living organisms, it is a loose sediment, Moreover, there are different types of soil like Clay Soil, Sandy soil, Loamy Soil, Silt Soil
soil it is One of the most crucial components of the biosphere, this particle is composed of 45% minerals, 50% spaces and 5% organic matter, the soil involve in many important functions such as Providing a growth medium for the plants, Acts a modifier of the earth’s atmosphere
The formation of soil involve in different process , it can be formed by weathering of rocks and the weathering of Solid rock occur in three way like Mechanical Weathering, Chemical Weathering, Biological Weathering
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Which best describes the process of ocean acidification?
Question 8 options:
The ocean absorbs more human-produced CO2, causing the acidity to increase
The ocean releases more human-produced CO2, causing the acidity to decrease
The ocean absorbs more natural CO2, causing the acidity to decrease
The ocean receives more polluted runoff, causing the acidity to increase
functions of ribosomes and lysosomes
Answer:
Ribosomes are responsible for making proteins
Lysosomes are responsible for removing wastes, as well as destroying a cell after it dies
Answer:
functions of ribosomes and lysosomes :-
ribosomes -
- they are many in number.
-they are not membrane bound.
-they are responsible for protein synthesis. the more the amount of protein synthesised, more the number of ribosomes.
- they are either attached to endoplasmic reticulum or they will be freely present inside the cytoplasm.
lysosomes -
- they contain digestive enzymes that break down waste materials, foreign material and cellular debris. they are capable of digesting fats,proteins, etc. along with them lysosomes also digest or damage their own cells by their own enzymes, which lead to death of the cells. this process is called as autolysis. hence, tysosomes are also called suicidal bags.
What are some
drawbacks of hydroelectric
plants?
Answer:
hydropower has the ability to generate electricity without emitting greenhouse gases. however it can also cause environmental and social threats such as damaged wildlife habitat, harmful water quality, obstructed fish migration and diminished recreational benefits of rivers.
This is the chemical equation for photosynthesis: 6CO2 + 6H2O → C6H12O6 + 6O2 True False
Answer:
False
Explanation:
The equation is 6CO2 + 6H2O → C6H12O6 + 6O2.
Hope this helps!
Do mutations in body cells contribute to genetic variation?(1 point)
A) No, the causes of body cell mutations are outside the body and cannot alter DNA.
B) Yes, the mutations can be passed on to offspring and contribute to variation in the population.
C) Yes, these body cell mutations lead to mutations in the gametes.
D) No, the mutations cannot be passed to offspring and only affect the individual.
A mutation is the alteration of the genetic sequence of an organism, which can either be inherited or cannot be inherited. The mutation when transmitted to the offspring leads to genetic variation.
The correct answer is:
Option B. Yes, the mutations can be passed on to offspring and contribute to variation in the population.
Mutation is the change in the genetic sequence of the organism, which can be caused due to environmental factors and can be inherited.
The mutations can lead to genetic disorders, chromosomal disorders, or any other conditions. The mutations like a disease or adaptation that can be passed onto the offspring can result in genetic variation.
The mutation leads to genetic diversity, as the mutation is also the first step towards evolution. The organisms better suited to the environment will survive more and adapt more. These changes in the organisms will be inherited by the offspring leading to genetic variation.
Therefore Option B is correct.
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Gold, quartz, and talc are minerals. Copper and iron are types of ore. What is the difference between minerals and ores?
A. A mineral is a non-living, solid substance that can be extracted from the ground. Ore is a type of mineral made up of metals.
B. An ore is non-living and solid with little value unless it occurs in large amounts, in which case it is a mineral.
C. A mineral is a valuable form of ore that can be extracted from the ground.
D. A mineral is a non-living, solid substance made of elements. Ore is a large deposit of one or more valuable minerals in the ground.
Answer:
A
Explanation:
All ores are minerals. Minerals are naturally occuring compound. they are more valuable than ore while ores are those minerals from which metal are extracted conveniently and profitably
En las plantas de guisante la forma lisa de la vaina (cubierta) es dominante sobre la forma rugosa. Se cruzan plantas de vaina lisa con plantas de vaina rugosa, ambas homocigotas. Determine fenotipo y genotipo de F1 y F2.Resultante
Answer:
F1)
Genotipo: 100% Heterocigota, LlFenotipo: 100% Frutos de vaina lisaF2)
Genotipo: 25% Homocigota dominante, LL50% Heterocigota, Ll
25% Homocigota recesivo, ll
Fenotipo: 75% Frutos de vaina lisa (LL + Ll)25% frutos de vaina rugosa (ll)
Explanation:
Datos disponibles:
Vaina lisa es la característica dominanteVaina rugosa es la característica recesivaEl gen que codifica la textura de la vaina es dialélicoLlamemos L al alelo dominante que expresa vaina lisa, y l al alelo recesivo que expresa vaina rugosa1er Cruza: planta de vaina lisa homocigota x planta de vaina rugosa homocigota
Parentales) LL x ll
Fenotipo) Lisa Rugosa
Gametos) L L l l
Cuadro de Punnett) L L
l Ll Ll
l Ll Ll
F1) 4/4 = 100% de la progenie será heterocigota, Ll, para la textura de vaina, pero expresarán vainas lisas.
2da Cruza: Dos plantas provenientes de la F1
Parentales) Ll x Ll
Fenotipo) Liso Liso
Gametos) L l L l
Cuadro de Punnett) L l
L LL Ll
l Ll ll
F2) 1/4 = 25% de la progenie será homocigota dominante, LL
2/4 = 50% de la progenie será heterocigota, Ll
1/4 = 25% de la progenie será homocigota recesiva, ll
3/4 = 75% de la progenie tendrá vainas lisas
1/4 = 25% de la progenie tendrá vainas rugosas.
Which of the following is an example of a glacial formation?
glacial horn
mesa
stack
alcove
Answer:
i think glacial horn is an example of a glacial formation?
Glacial Horn is a pointed peak like feature which are bounded on at least three sides by glaciers. Thus, glacial horn is a best example of glacial formation. Hence, option A is correct.
What is Glacier?
Glacier is a slow moving mass of ice observed in the high mountain valleys and colder Polar Regions.
Every mass of ice are not glacier, it must be at least six hundreds of a square mile in size and the thickness will be more than 164 feet.
The principal components for the formation of glacier is snow.
Hence it is observed during winter in the regions where a lot of snow fall occurs and less snow will melt in summer.
Glacial horn are specifically have flat faces which show a pyramidal shape and sharp distinct edges like a pointed peak structure.
Hence, option A is correct.
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Which of the following MOST influenced scientists to conclude that the fossils found in the Philippines were from a new human
species?
(A)
the tools that were found near the fossils
(B)
the unique shape and size of the fossils
(C)
the location where the fossils were discovered
(D)
the age of the fossils that were tested
Answer:
c
Explanation:
next me my question ☺️⁉️
A fence lizard is shown in the image below.
The main defense of a fence lizard is camouflage, which only works as long as the lizard stays still. Unfortunately, fire ants, which kill fence lizards, are not fooled by camouflage. When attacked by fire ants, some fence lizards hold perfectly still. Other fence lizards twitch to free themselves from the ants, and then they run away.
Use the above information to complete the following sentences.
Twitching when attacked
increases
a lizard's chances of surviving fire ants. Twitching
decreases
a lizard's chances of hiding from other predators.
Answer:
a lizards chance of hiding from other predators if twitching decrees if not twitching increes
Explanation:
Answer:Twitching when attacked
increases
a lizard's chances of surviving fire ants. Twitching
decreases
a lizard's chances of hiding from other predators.
Explanation:
What is the function of the labeled structures? A: В С В: С: A
Answer:
what are the answers
Explanation:
Which of the following
organelles holds a lot of water to keep its rigidity?
A nucleus
B, cell membrane
C, cytoplasm
D, Vacuoles
h e l p
Multiple Answer
Which of these is evidence for evolution?
a caterpillar changing into a butterfly
a tadpole changing into a frog
horse teeth becoming flatter over time in the fossil record
mutations in DNA
a chicken egg hatching
c. vestigial rear leg bones in whales
different shapes on Galapagos tortoises from different islands
a tailbone in humans
similar bone structure in whale flipper and human hand
Observe: Increase the Sim. speed by two levels. Click Play, and wait for a while. What occurs as time goes by?
Answer:
more insects become green
Explanation:
Instructions: Write 2/3-1 page of notes on the video.
https://youtu.be/8yvEDqrc3XE
You can just write the sentences down... please and thank you!
I always give a brainliest ;)
Answer:
ok i will lookk
PLZ HELP
A deletion mutation causes three consecutive nucleotides to be removed from the
DNA code.
Which option describes the possible effect of this mutation?
Select one:
Three amino acids may not be present. The rest of the amino acids would be in the protein
in the correct order.
Five amino acids may not be present. The rest of the amino acids would be in the protein
in the correct order.
Two amino acids may not be present. The rest of the amino acids would be in the protein
in the correct order.
One amino acid may not be present. The rest of the amino acids would be in the protein in
the correct order.
The deletion mutation will cause one amino acid to be absent while coding for other protein in the correct order. Therefore, option (D) is correct.
What is deletion mutation?By eliminating at least one nucleotide from a gene, a deletion modifies the DNA sequence. Larger deletions can eliminate a whole gene or a number of nearby genes, while smaller deletions just delete one or a few nucleotides from a gene. The function of the affected protein or proteins may change as a result of the deleted DNA.
An insertion or deletion, often known as a frameshift mutation, can alter every codon in a certain genetic sequence by upending the three by three codon structure as a whole. As an illustration, consider the following code, which stands for the amino acids aspartate, aspartate, serine, alanine, and arginine: GAU GAC UCC GCU AGG.
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How was life today similar and different to the Silurian period? ( animals, plants , organisms)
Answer:
The creatures developed in silurian period have evolved to live in sea bottoms.
Explanation:
Silurian life that is marine benthic which are bottom lying organisms belongs to the community of ecological zones that express themselves. As the gradients of temperature, pressure, and salinity. Consists of a community that is adapted to live in a darker region, used to lie in quieter environments that are in deep offshore water. These are much like the reef communities today as they do not tolerate excessive sediments. Prefer wave water that is shallow than 30 meters. These platforms are very gentle and are found over a hundred km gradients. Most of the fish represent the Silurian age and are widely distributed in marine environments. Examples of jawless fish, terrestrial fungi etc.Which of the following are sites where waste products are released from the body but not where they are produced
O skin and anus
O large intestine and small intestine
O liver and kidney
O tubules and ureters
Answer:
Its A skin and anus
(just did test)
Explanation:
The skin and the Anus are sites where waste products are released from the body but not where they are produced.
Which process of the human body eliminates the waste products?Excretion is the biological process through which any unwanted or waste products are eliminated from the body.
Large and small intestines produce waste products that are not completely digested by the stomach. The liver and kidney are also the sites of waste products like the removal of carbon dioxide and synthesis of urine respectively.
Therefore, the skin and the Anus are sites where waste products are released from the body but not where they are produced.
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why is taking action for global warming important? please help
Answer: Global warming will cause significant harm to the health of persons and their communities by compromising food and water supplies; increasing risks of morbidity and mortality from infectious diseases and heat stress; changing social determinants of health resulting from extreme weather events, rising sea levels,
what is the possible liminations of using hair as evidence in crime investgation s\
Answer:
A limitation of using hair as evidence from a crime scene is that hair can not be directly linked to a suspect. It is impossible to say that a hair sample came from only one specific person.
Answer:
How it got there. Anyone's hair can be carried and blown from anywhere, if so you'd have to go through every persons dna that had contact with a victim and contact with the contactie and so on and so on.
Need help on this question ?
Answer and Explanation:
Rectum
The answer is the Rectum.
This is where everything is stored after all the processes.
#teamtrees #PAW (Plant And Water)
Which invertebrate from the picture did you choose from Figure 1? HINT: There is only 1 on there to choose.
Explain how body plan and anatomy enables your chosen invertebrate to perform the essential functions it needs to survive.
Answer:
Octopus (Behind the octopus's head, directly opposite the arms, is its mantle. The mantle is a highly muscled structure that houses all of the animal's organs. Its gills, hearts, digestive system and reproductive glands are all crammed into this one space)
Explanation:
What determines the
carrying capacity in an
ecosystem?
A. The number of different species in
the ecosystem
B. Limiting factors
C. Only biotic factors
D. Only abiotic factors
Answer:
B
Explanation:
The limiting factors tell you what chances you have to survive in the ecosystem. In fact, it is the primary basis which you will have to plan on because I you don't, it's disadvantages will take you unawares.
What are the two parts that describe the measure of force? (your own answer)
Answer:
Force can be measured by the amount of mass in the object and how fast that object is accelerating.
It can also be measured by the change in momentum and the time taken.
9. Who benefits from herd immunity?
Answer:
Everyone since the virus or disease won’t be able to infect them. The left infected the less the spread.
Explanation:
Answer:
Herd immunity protects the most vulnerable members of our population.
Briefly describe the role of the ribosome and tRNA in translating the mRNA sequence into an
amino acid chain.
Answer:
Explanation:
Messenger RNA (mRNA) is translated into protein by the joint action of transfer RNA (tRNA) and the ribosome, which is composed of numerous proteins and two major ribosomal RNA (rRNA) molecules. ... Transfer RNA (tRNA) is the key to deciphering the code words in mRNA. The ribosome brings together the mRNA to be translated and a set of molecules called transfer RNAs, or tRNAs, which are floating in the cell. ... Each tRNA is designed to carry a specific amino acid that it can add to a polypeptide chain. tRNAs bring their amino acids to the mRNA in a specific order.
1. Typically large organisms
Large organisms include...
Mammals (Mammalia)
Stem-mammals (Synapsida)
Reptiles (Reptilia)
Dinosaurs (Dinosauria)
) ¿Qué nombre recibe cada una de las unidades (monómeros) que constituyen el polímero conocido por las siglas ADN?
Answer and Explanation:
El ADN (ácido desoxiribonucleico) es un ácido nucleico que participa en la codificación y transferencia de la información genética en los seres vivos. Es un polímero cuyas unidades monoméricas son pequeñas moléculas llamadas nucleótidos. En el ADN, hay 4 tipos de nucleótidos que conforman la secuencia:
- Adenina (A)
- Citosina (C)
- Guanina (G)
- Timina (T)