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Answer: c) CommensalismExplanation:Commensalism is a interaction where one organism benefits and the other is neither harmed nor helped.

Dobereiner'sLaw ofTriads.Dobereiner, in 1817 suggested a relationship between the properties of elements and their atomic weights. According toDobereiner, the atomic weight of the middle element is nearly the same as average of the atomic weights of other two elements

Law ofoctaves. Law ofoctaves, in chemistry, the generalization made by the English chemist J.A.R.Newlandsin 1865 that, if the chemical elements are arranged according to increasing atomic weight, those with similar physical and chemical properties occur after each interval of seven elements.

Give two examples for herbivores

Spermatogenesis is the process of the production of sperms from the immature germ cells in males. It takes place in seminiferous tubules present inside the testes. During spermatogenesis, a diploid spermatogonium (male germ cell) increases its size to form a diploid primary spermatocyte. This diploid primary spermatocyte undergoes first meiotic division (meiosis I), which is a reductional division to form two equal haploid secondary spermatocytes. Each secondary spermatocyte then undergoes second meiotic division (meiosis II) to form two equal haploid spermatids. Hence, a diploid spermatogonium produces four haploid spermatids. These spermatids are transformed into spermatozoa (sperm) by the process called spermiogenesis.

Population density is a measurement of population per unit area, or exceptionally unit volume; it is a quantity of type number density. It is frequently applied to living organisms, and most of the time to humans. It is a key geographical term

AIDS is caused by virus called as HIV (Human Immunodeficiency Virus) which kills the immune cells of our body (Helper T Cells). These helper T cells are responsible for production of antibodies from B cells (Antibody producing cells) to fight different infections and pathogens. So when person is infected with HIV, his immunity to fight against different pathogens is much lowered as a result different types of viral and bacterial pathogens can invade his body and different types of diseases and infections, affecting different body parts and organs can be developed. So AIDS is not a single disease but a group of disease.That’s why it is called as syndrome.

Noncommunicable - or chronic - diseases are diseases of long duration and generally slow progression. The four main types of noncommunicable diseases are cardiovascular diseases (like heart attacks and stroke), cancer, chronic respiratory diseases (such as chronic obstructed pulmonary disease and asthma) and diabetes.

Non communicable or chronic diseases are diseases of long duration and generally

A virus is a small infectious agent that replicates only inside the living cells of other organisms. Viruses can infect all types of life forms, from animals and plants to microorganisms, including bacteria and archaea.

There are a variety of diseases that can be carried by animals and insects and then transmitted to humans, includingRabies,West Nile virus,Rocky Mountain Spotted FeverandPlague.Many of these diseases are caused by bacteria, viruses, parasites and fungi that are carried by animals and insects. People get these diseases by being bittenby animal or insect or through other close contact.

Microorganismsarethesmallest organisms on Earth. In fact,thetermmicroorganismliterallymeans"microscopic organism."Microorganismsmay be composed of prokaryotic or eukaryotic cells, and they may be single-celled or multicellular. Examples ofmicroorganismsinclude algae,fungi, protozoa,bacteriaand viruses.

Prokaryotic Microorganisms

Prokaryotes arguably represent the earliest forms of life on Earth. They are broken up into two categories: bacteria and archaea. A prokaryotic cell lacks a nucleus to hold the cell's DNA and lacks any sort of organized packaging or housing to hold the rest of the cell's machinery. Because prokaryotic cells lack this extra material, they are almost always smaller than other cell types; all prokaryotes are microorganisms, and they are almost always single-celled.

Eukaryotic Microorganisms

Eurkaryotic cells are larger and more complex than prokaryotic cells. The DNA of a eukaryotic cell is neatly packaged within its nucleus, and there are several different structures that house the cellular machinery that can make eukaryotic microorganisms self-sufficient. The structures located in eukaryotic cells may include the endoplasmic reticulum, golgi apparatus, mitochondria, and ribosomes, as well as chloroplasts in photosynthetic cells. Examples of eukaryotic microorganisms include fungi, algae, protozoa and various microscopic parasitic worms.

Meiosis is a process of reductional division in which the amount of genetic material is reduced. Gametogenesis is the process of the formation of gametes. Gametes produced by organisms are haploids (containing only one set of chromosomes), while the body of an organism is diploid. Therefore, for producing haploid gametes (gametogenesis), the germ cells of an organism undergo meiosis. During the process, the meiocytes of an organism undergo two successive nuclear and cell divisions with a single cycle of DNA replication to form the haploid gametes.

capsicum is not a genetically modified crop

Chilgoza seeds are obtained from pine trees which are gymnosperms.

Bacteria reproduce mainly by fission. Sometimes, under unfavourable conditions, they produce spores.

Proteins and nucleic acids (DNA and RNA) arethe two biologicallyimportantcompoundsthatcontain both oxygen and nitrogen.

1) Addison disease in which autoantibodies attack the adrenal cortex, and myasthenia gravis, in which they attack neuromuscular cells.

2) Proteins and nucleic acids (DNA and RNA) are the two biologically important compounds that contain both oxygen and nitrogen.

Nucleic acids and proteins are two biologically important compounds that contain both oxygen & nitrogen.

Nucleic acids and proteins are two biologically important compounds that contain both oxygen & nitrogen.

Reaction-NH3+HCl→NH4Cl

B part (semi permeable

complete permeability

b) semi permeability

semi permeability is correct answer

semi permeability is correct answer

semi permeable is the correct answer

Semi permeability is the correct answer of the following

semi permeability is the answer

semi permeable is the function of cell wall

option b(semi permeablity)

b . semi permeability

A cell wall shows Semi permeability the cell wall of the bacterial cell or plant cell is a semi permeable as it allows some proteins and minerals to pass through it

b. semi permeability

semi permeability is the right answer

b answer(semi permeability)

cell walls show the semi permeability nature

semi permeability is right answer

Semi permeability is the correct answer

b) semi permeability is the correct answer

(b) semi impermeability right answer

b is the right answer (semi permeability)

SEMI PERMEABILITY IS THE CORRECT ANSWER

cell wall shows semi permeability

semipermeability is right answwr

The answer is - Cell wall shows semi permeability. It allows only small molecules And water to enter in the plant cells.Thus it shows the semi permeability.

semi permeability is the correct answer

b is the correct answer because a cell wall of the bacterial cell or plant cell is a semi permeable as it allows some proteins and minerals to pass through it . and it didn't allows another material

Answer-A cell wall is a tough and flexible structural layer that surrounds cell membrane in plants, algae and most prokaryotes.

Unlike cell membrane, the cell wall of most plant cells is completely permeable to small proteins (size- 30-60 kilodaltons), water and other molecules etc.

An important factor that governs the transportation of molecules through cell walls is the pH.

So, the correct answer is 'Complete permeability'.

How

complete permeablity

Semi permeability ...is the right answer

Semi permeability, is correct answer.

semipermeable option but

Types of Treatment for ADA-SCID

Three types of therapy are available for thetreatmentof ADA-SCID:

Bone marrow transplant (BMT): replaces defective immune cells with healthy immune cells from a donor

Enzyme replacement therapy (ERT): replaces the missing ADA enzyme and allows the immune system to function properly

Gene therapy:experimentaltherapy that replaces defective genes with genetically modified ones, restoring or increasing levels of ADA

Gene therapy is the introduction of normal genes into cells in place of missing or defective ones in order to correct genetic disorders..

thanks

adenosine deaminase (ADA).

Assertion is rightly explained and reason is also rightso Both are right

Answer: ampR geneExplanation:The cloning sites are actually the specific unique recognition sequence for a particular restriction enzyme, so as to link the foreign DNA with the vector DNA to create a recombinant DNA molecules, (l) These sites are important for joining of DNA fragments of vector and alien DNA. And also multiple recognition sequences for a particular restriction enzyme within a DNA or vector will complicate the process of gene cloning.The two cloning sites in pBR322 are Bam HI of tetracycline resistant gene and Pvu I of ampicillin resistant genes

Metaphase is the third phase of mitosis, the process that separates duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. During metaphase, the cell's chromosomes align themselves in the middle of the cell through a type of cellular "tug of war." The chromosomes, which have been replicated and remain joined at a central point called the centromere, are called sister chromatids.

The Sea Sponge is a renewable natural resource. While harvesting, divers are careful to ensure that the base of the sponge remains intact. This puts into motion its natural reproduction. The sponge then will re-grow within a few years, often bigger and healthier than its original state. Studies show that areas harvested actually increase the population density of sponges. Additionally, the sponges have amazing regenerative powers as the natural process of the tide and currents will pick up sponges and they will re-grow in new locations.

Area 1= 40 *2.5= 100area 2'= 80*2.5=200but there is also overlap of two path so we have to subtract one timeso 2.5*2.5=6.25so total area = 100+200-6.25=293.75 m^2

80*2.5=200 m^240*2.5=100 m^2total road area= (200+100)-(2.5*2.5)=293.75 m^2

area of rectangular garden=80*40=3200 m^2

so, unshaded portion's area= 3200-293.75=2906.25 m^2

"There are two special parts of neurons; dendrites and axons.

Dendrites carry information to the cell whereas axons carry away the information from the cell.

Axons and dendrites do not touch each other even though axon of one neuron is very closely placed to the dendrite of another neuron.

This connection between dendrite and axon is called synapse, which carries neural impulse from one neuron to another.

External fertilizationis characterized by the release of both sperm and eggs into an external environment; sperm will fertilize the egg outside of the organism, as seen in spawning.Internal fertilizationis characterized by sperm fertilizing the egg within the female; the three methods include: oviparity (egg laid outside female body), ovoviparity (egg held within female), and viviparity (development within female followed by live birth).Internal fertilization protects the fertilized egg or embryo from predation and harsh environments, which results in higher survival rates than can occur with external fertilization.Ovoviparityis characterized by an organism retaining a fertilized egg inside the body where development occurs and nourishment is received from the yolk.Viparityis characterized by an organism which has its young develop within the female and nourishment is received directly from the mother via a placenta.

Ans :- External fertilizationusuallyoccursin aquatic environments where both eggs and sperm are released into the water.

The trigger for egg and sperm release (spawning) causes the egg and sperm to be placed in a small area, enhancing the possibility offertilization.

Fertilisation or fertilization, also known as generative fertilisation, insemination, pollination, fecundation, syngamy and impregnation, is the fusion of gametes to initiate the development of a new individual organism. The cycle of fertilisation and development of new individuals is called sexual reproduction.

Carbohydrates Protien

The process of combining the male gamete, or sperm, with the female gamete, or ovum. The product of fertilization is a cell called a zygote.

5. a. Once the egg is fertilised, it becomes a multicellular object called a zygote. This implants itself in the uterus lining, because it is able to survive now 6. c .snakes

2 An algal bloom or marine bloom or water bloom is a rapid increase in the population of algae in an aquatic system. Algal blooms may occur in freshwater as well as marine environments. Typically only one or a few phytoplankton species are involved and some blooms may be recognized by discolouration of the water resulting from the high density of pigmented cells.

which question do you wanna ask??click the properly please....

first we eat underground stem plant is ginger ,we eat it's stem which grow in soil.and as it is potato grow and we eat also.

these are called tuberous roots

Gametes are mature haploid cells whichfuses with another gameteto produce a diploid cell called a zygote, which further develops into fetus.

Thezygoteis the first cell of the embryo and carries all the maternal and paternal genetic makeup which helps in the formation of a new organism.

Pneumonia is an infection of the lungs that can cause mild to severe illness in people of all ages. ... Pneumonia and influenza together are ranked as the eighth leading cause of death in the U.S. ... Pneumonia is a serious lung infection with a number of possible causes.

2 types bacterial pneumonia and viral pneumonia