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Significance of respiration:

Respiration plays a significant role in the life of plants. The important ones are given below:

(i) It releases energy, which is consumed in various metabolic processes necessary for life of plant.

(ii) Energy produced can be regulated according to requirement of all activities.

(iii) It converts in soluble foods into soluble form.

(iv) Intermediate products of cell respiration can be used in different metabolic pathways

2. is the right answer

Darwin's theoryconsisted oftwo main points; 1) diverse groups of animals evolve from one or a few common ancestors; 2) the mechanism by which thisevolutiontakes place isnatural selection.

Option (4) is correct.

the correct option is 2

Natural selectionis a centralconceptofevolution. The English biologistCharles DarwinandAlfred Russel Wallace, and is sometimes called thesurvival of the fittest.Darwin chose the name as ananalogywithartificial selection(selective breeding).

Natural selection is the process whereorganismswith favorabletraitsare more likely to reproduce. In doing so, they pass on these traits to the nextgeneration. Over time this process allows organisms toadaptto theirenvironment. This is because thefrequencyofgenesfor favourable traits increases in the population.

Key points:

Charles Darwin was a British naturalist who proposed the theory of biological evolution by natural selection.

Darwin definedevolutionas "descent with modification," the idea that species change over time, give rise to new species, and share a common ancestor.

The mechanism that Darwin proposed for evolution isnatural selection. Because resources are limited in nature, organisms with heritable traits that favor survival and reproduction will tend to leave more offspring than their peers, causing the traits to increase in frequency over generations.

Natural selection causes populations to becomeadapted, or increasingly well-suited, to their environments over time. Natural selection depends on the environment and requires existing heritable variation in a group.

Ans :- Evolution should not be equated with progress. In fact, there is no real 'progress' in the idea of evolution. Evolution is simply the generation of diversity and the shaping of the diversity by environmental factors. The only progressive trend in evolution seems to be that more and more complex body designs have emerged over time. However, again it is not as if older designs are inefficient! So many of the older and simpler designs still survive [..] In other words, human beings are not the pinnacle of evolution, but simply yet another species in the teeming spectrum of life.

Evolutionary process is compared to a tree instead of a ladder.

Phylogeny is a tree diagram which has its own stages and branches evolve from these stages. Phylogenetic tree exhibits lot of information about evolutionary relationships. Classification of organisms is based on hierarchical system, a step wise system. Hence phylogenetic system is used for classifying organisms. Phylogeny is represented in the form of a tree as single step may give rise to many forms which evolve as branches arising from single place. Evolutionary process is not compared to a ladder. Involving ladder for showing evolutionary process is not apt as it is not a sequential process one above the other. It is a branched process.

Darwin's TheoryofEvolutionbyNatural Selection. More individuals are produced each generation that can survive. Phenotypic variation exists among individuals and the variation is heritable. Those individuals with heritable traits better suited to the environment will survive.

Darwin's Theory of Evolution by Natural Selection

More individuals are produced each generation that can survive.

Phenotypic variation exists among individuals and the variation is heritable.

Those individuals with heritable traits better suited to the environment will survive.

When reproductive isolation occurs new species will form.

These are the basic tenets of evolution by natural selection as defined by Darwin.

Darwin's Theory ofEvolutionbyNatural Selection. More individuals are produced each generation that can survive. Phenotypic variation exists among individuals and the variation is heritable. Those individuals with heritable traits better suited to the environment will survive.

This is because they are the main organ responsible for photosynthesis, through which the plant produces its energy a. k. a. it's food

Aleafis actuallycalled'thekitchenof theplant'. This is because they are the main organ responsible for photosynthesis, through which theplantproduces its energy a.k.a. it's food. They obtain their green colour due to the presence of chlorophyll.

Please Like my answer and then I will also like your answer.

It's because they contain chromo plasts in plastids which helps in photosynthesis..... That's allThx

chorophyll is present in leaves so it make food their own

Mango and coconutare drupe fruits. They develop from monocarpellary superior ovariesand are one seeded. It is differentiated into outer thin epicarp, middle fleshy mesocarp and inner stony endocarp. Theedible partofcoconut(Cocosnucifera) is endosperm.hence option b

but b option is mesocarp (for coconut)

???

Hybridization is the process of interbreeding between individuals of different species (interspecific hybridization) or genetically divergent individuals from the same species (intraspecific hybridization). Offspring produced by hybridization may be fertile, partially fertile, or sterile.

Edible mushrooms are the fleshy and edible fruit bodies of several species of macrofungi (fungi which bear fruiting structures that are large enough to be seen with the naked eye). They can appear either below ground (hypogeous) or above ground (epigeous) where they may be picked by hand.

a)Oxytocin, most of which is released from the paraventricular nucleus in the hypothalamus. Oxytocin is one of the few hormones that create a positive feedback loop.

b)Antidiuretic hormone (ADH, also known as vasopressin), the majority of which is released from the supraoptic nucleus in the hypothalamus. ADH acts on the collecting ducts of the kidney to facilitate the reabsorption of water into the blood.

Robert Hooke discovered the cells with the help of cork

Robert Hooke in 1665 discovered the cell . In examined the thin slices of cork under a self designed primitive microscope and saw that cork resembled the structure of honeycomb . The latter consisted of many tiny compartment . He called them cellulose as termed as cell . Cellulose is a lattin word which means a little room.

Robert Hooke discovered the cells help of slice of cork on 1665

The cell was first discovered byRobert Hookein 1665 using a microscope.

The cell was discovered by Robert Hooke

In 1665 Botanist Robert Hooke discover cell. When He has observed a piece of Cork under his self designed microscope. He observed structure like honey comb and name it as cell. 'cell' means a compartment

Tachycardia is considered aheart rateof greater than 100beatsper minute. If you are exercising, or performing any kind of activity, yourheartwill normally beat faster. This allows yourheartto pump blood through out your body, to provide oxygen to the tissues.

Tachycardia is considered a heart rate of grater than 100 beats per minute. If you are exercising, or performing any kind of activity, your heart will normally beat faster.

when oxygen is less in our body

Robert hooke discovered the cell

Robert hooke discovered the cell

something something s

somethings something

something somethings

Bones have many functions. They support the body structurally, protect our vital organs, and allow us to move. Also, they provide an environment for bone marrow, where the blood cells are created, and they act as a storage area for minerals, particularlycalcium. At birth, we have around 270 soft bones.

providing places for muscles to attach themselves to bones. Without muscles connected to bones, people would not be able to move or support theirbody. 4. manufacturing blood cells and storing "mineralssuch ascalciumand phosphorus."

Basic Bone Structure.Bonesare organs composed of hard living tissue providingstructuralsupport to the body – it's scaffolding. It is a hard matrix of calcium salts deposited around protein fibers. Minerals makebonerigid and proteins (collagen) provide strength and elasticity

purkinje discovered the protoplasm

purkinje discovered the protoplasm

Dujardin (1835) – discovered the protoplasm and named as “sarcode”.

J.E. Purkinje (1839) – first introduced the term ‘Protoplasm’.

A sudden increase in the nitrogen and other soil compounds in the pond will lead to an increase in the population of algae and phytoplanktons (bloom of algae or bloom of phytoplanktons) as they nitrify very quickly and multiply. This will, eventually, alter the population of other organisms present in the pond.

this is the internal structure of a heart

that is the internal structure of a heart

A food chain starts from the lowest organism to the highest animal that eats each of the subsequent ones.

Banana Plant ----> Grasshopper ----> Kite ----> Snake

Arthropod, any member of the phylum Arthropoda, the largest phylum in the animal kingdom, which includes such familiar forms as lobsters, crabs, spiders, mites, insects,centipedes, andmillipedes. About 84 percent of all known species of animals are members of this phylum.

The first largest phylum is Phyllum arthroproda and the second is phyllum mollusca

Second largest phylum is molliska

sorry .......Mollusca

I m confused that somebody said that phylum annelida is the second largest phyllum

pls clear my doubt

Arthopoda is an invertebrate animal which have an exoskeleton, a segmented body, and paired and jointed appendages.

There are three major classes of phylum arthropoda which are classified as- insects, ex.- cockroaches, ants, flies, bees, beetles and butterflies; crustaceans ex.- crabs, lobsters, shrimp and barnacles; arachnids ex.- scorpions, spiders and mites

The list of phylum echinodermata are:- 1.Larvae of Asteroidea. 2.Larvae of Holothuroidea. 3.Larvae of Echinoidea. 4.Larvae of Ophiroidea. 5.Larvae of Crinoidea Plzz mark as best answer plzzz

Echinodermis the common name given to any member of thephylumEchinodermata(fromAncient Greek, ἐχῖνος,echinos– "hedgehog" and δέρμα,derma– "skin")[2]ofmarineanimals. The adults are recognizable by their (usually five-point)radial symmetry, and include such well-known animals asstarfish,sea urchins,sand dollars, andsea cucumbers, as well as thesea liliesor "stone lilies".[3]Echinoderms are found at every ocean depth, from theintertidal zoneto theabyssal zone. The phylum contains about 7000 livingspecies,[4]making it the second-largest grouping ofdeuterostomes(a superphylum), after thechordates(which include thevertebrates, such asbirds,fishes,mammals, andreptiles). Echinoderms are also the largest phylum that has no freshwater or terrestrial (land-based) representatives.

The body cavityof acockroachis known as haemocoel and is filled with blood

haemocoel and is filled with blood

is knows as haemoceal

it becomes weak is the best answer

Thetestis are located outside the abdominal cavityin the scrotum because sperm production by thetestisrequires a lower temperature than the normal body temperature

correct answer . Thank you.

In genetics, a test cross, first introduced by Gregor Mendel, involves the breeding of an individual with a phenotypically recessive individual, in order to determine the zygosity of the former by analyzing proportions of offspring phenotypes. Zygosity can either be heterozygous or homozygous. Those that are heterozygous have one dominant and one recessive allele. Individuals that are homozygous dominant have two dominant alleles, and those that are homozygous recessive have two recessive alleles.[1]

The genotype that an offspring has for each of its genes is determined by the alleles inherited from its parents. The combination of alleles is a result of the maternal and paternal chromosomes contributed from each gamete at fertilization of that offspring. During meiosis in gametes, homologous chromosomes experience genetic recombination and segregate randomly into haploid daughter cells, each with a unique combination of maternally and paternally coded genes.[2] Dominant alleles will override the expression of recessive alleles.

Test crosses are used to test an individual's genotype by crossing it with an individual of a known genotype. Individuals that show the recessive phenotype are known to have a homozygous recessive genotype. Individuals that show the dominant phenotype, however, may either be homozygous dominant or heterozygous. The phenotypically dominant organism is the individual in question in a test cross. The purpose of a test cross is to determine if this individual is homozygous dominant or heterozygous.[1]

pachan tantra kise kahente hai

A test cross is a cross between an individual with the dominant phenotype but of unknown genotype with the homozygous recessive individual.

Ans :- Large carbon molecules are built from smaller, simpler molecules called monomers.

thank you

A phenotype is the composite of an organism's observable characteristics or traits, such as its morphology, development, biochemical or physiological properties, behavior, and products of behavior.

The genotype is the part of the genetic makeup of a cell, and therefore of any individual, which determines one of its characteristics. The term was coined by the Danish botanist, plant physiologist and geneticist Wilhelm Johannsen in 1903.

Ans :- Thegenotypic ratiodescribes the number of times agenotypewould appear in the offspring after a test cross. For example, a test cross between two organisms with samegenotype, Rr, for a heterozygous dominant trait will result in offspring with genotypes: RR, Rr, and rr.

Phenotypic ratiopertains to the relative number of offspring manifesting a particular trait or combination of traits. It can be determined by doing a test cross and identifying the frequency of a trait or trait combinations that will be expressed based on the genotypes of the offspring. genotypic ratio.

Thegenotypeis the set of genes in our DNA which is responsible for a particular trait.

Thephenotypeis the physical expression, or characteristics, of that trait.

For example, two organisms that have even the minutest difference in their genes are said to have differentgenotypes.

Carbon forms the backbone of biology for all life on Earth. Complex molecules are made up of carbon, bonded with other elements, especially oxygen, hydrogen and nitrogen. It is these elements that living organisms need, among others, and carbon is able to bond with all of these because of its four valence electrons.

All the important molecules of living organisms, which help to sustain its life, are carbon based. These include proteins, nucleic acids, carbohydrates, fats and enzymes.

In the resultingF2 generation, 3/4 showed the dominantphenotype, and 1/4 showed the recessivephenotype. For example, when a round seed line was crossedtoa wrinkled seed line, the F1generationwas all round, and theF2 generationshowed aphenotypic ratioof 3 round : 1 wrinkled.

9*10=908*9=727*8=566*7=423*6=18

Answer is 18 this question

the answer to this question is 3*4=12

18 simple follow the pattern that is x*10x-1*10-1 and so on

the right answer is 3*4=12

as rules 3=12. That's right

9*10=908*9=727*8=566*7=423*4=12

9×9+9=90

8×8+8=727×7+7=566×6+6=42so,3×3+3=12

b)Veins have halves to prevent backflow

Parthenogenesisis a type ofasexual reproductionin which a female gamete or egg cell develops into an individual without fertilization.

Animals including most kinds of wasps, bees, and ants that have nosex chromosomesreproduce by this process. Somereptilesand fish are also capable of reproducing in this manner. Many plants are also capable of reproducing by parthenogenesis.

Penicillin was discovered by Dr.Alexander Fleming

Bacteria (staphylococcus)

IN COMPUTER WHAT KIND OF APPLICATIONS IS INSTALLED

option b Bacteria ( staphylococcus )