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When it comes to our health, prevention is much better than cure. Several diseases and injuries are preventable, and can be managed much better if identified earlier on.

It is common for people only to go to the doctor when they are feeling unwell. A regular check-up with your doctor helps them to assess your overall health and to identify your risk factors for disease. By knowing what's normal for you early on, you'll be able to detect any serious changes later.

There are three limitations of this approach to dealing with infectious diseases are (I) The first is that there body functions are damaged and may never recover completely.(ii) The second once someone has a disease is likely to be bed ridden for some time if we can give proper treatment.(iii) The third is that once someone has a infectious disease can serve as the source from where the infection may spread to other people.

An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows.

It is rare to find a beach in the world that doesn’t have litter. Humans produce about 300 million tons of plastic each year. More than 8 million tons of that plastic are dumped into the oceans, and in 2017, an estimated 5 trillion pieces of plastic littered the seas. The plastic in the oceans has devastating effects on wildlife. In 2017, for example, a beached whale discovered off the coast of Scotland died because of the amount of plastic it had consumed – about nine pounds of plastic bags were found coiled in its digestive tract.

Preventing ocean pollution is vital for the well-being of the sea and marine life.1. Use Less Plastic

2. Organise a Beach Clean-Up

3. Ocean-Friendly Pets

4. Responsible Boating

5. Reduce Your Rubbish

6. Storm Water Drains

7. Care for Your Local Stream

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Coordination is the ability to use different parts of the plant together, smoothly and efficiently. In plants, coordination is due to the result of a chemical system, wherein plant hormones or phytohormones have a major role.Movement in plants

Plants exhibit two types of movements.

1.Growth-dependent movements called the Tropic Movements. ( towards or away from a stimulus)

2.Non-growth dependent movements called the Nastic Movements. ( independent of stimulus)

Tropic movements

These can be classified again into 5 types. They are:

1.Phototropism (light)

2.Geotropism (gravity)

3.Hydrotropism (water )

4.Chemotropism (chemicals)

5.Thigmotropism (touch)

Plants have neither nervous system nor muscles that bring about Movement in animals it. It doesn't mean that plant do not show movement. Plants also show movements. moments that do not involve growth and moment that are due to growth these are the movement in a plant. hormones in plants are called plant hormones or growth regulator this helped in coordination of the plant. incremental triggers such that light water Gravity Chemicals that help in a coordination of the plant. some hormones like growth hormones such that a u x i n gibberellin cytokinin and also inhibitors that help the plant to more growth like abscisic acid.

Plants exhibit some growth changes as well as some movements. This coordination in plants is attributed to the presence of plant hormones. Unlike animals, plants do not have anymuscular system or nervous system. But, they are still able to show movement and also coordination. These movements are always controlled and not haphazard.

Growth-dependent movements called the Tropic Movements. ( towards or away from a stimulus)

Non-growth dependent movements called the Nastic Movements. ( independent of stimulus)

HOPE IT HELPS YOU

Plants have neither nervous system nor muscles that bring about Movement in animals it.

It doesn't mean that plant do not show movement. Plants also show movements.

moments that do not involve growth and moment that are due to growth these are the movement in a plant.

hormones in plants are called plant hormones or growth regulator this helped in coordination of the plant.

incremental triggers such that light water Gravity Chemicals that help in a coordination of the plant.

some hormones like growth hormones such that auxin, gibberellin, cytokinin and also inhibitors that help the plant to more growth like abscisic acid.

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Oparin — Haldane theory of chemical origin of life.Haldane (1929) proposed the 'Theory of chemical evolution of life'. According to this theory, life originated from non-living matter, some three billion years ago, in a primitive atmosphere, through a process of chemical evolution

What is coordination in plants?

Coordination is the ability to use different parts of the plant together, smoothly and efficiently. In plants, coordination is due to the result of a chemical system, wherein plant hormones or phytohormones have a major role.

Movement in plants

Plants exhibit two types of movements.

Growth-dependent movements called the Tropic Movements. ( towards or away from a stimulus)

Non-growth dependent movements called the Nastic Movements. ( independent of stimulus)

Tropic movements

These can be classified again into 5 types. They are:

Phototropism (light)

Geotropism (gravity)

Hydrotropism (water )

Chemotropism (chemicals)

Thigmotropism (touch

Nastic Movements

Nastic movements in plants are not directional movements. They are not dependent on stimulus and are growth independent. For example, the leaves of a touch me not plant (Mimosa pudica), fold up immediately when touched. These kinds of changes occur due to the changes in the amount of water in the leaves. Depending on the quantity, they either swell up or shrink.

Plant hormones or phytohormones

They are responsible for the control and coordination of plants. There are different types of hormones, which affect the growth of a plant. Phytohormones are chemical compounds which are released by stimulated cells. These hormones are diffused around the plant cells. They have a role to play in the cell division, cell enlargement, cell differentiation, fruit growth, falling of leaves, ripening of fruits, ageing of plants etc.

The different types of phytohormones are:

Auxins

Gibberellins

Cytokinins

Abscisic acid

Auxins– They help in the cell growth at the shoot tips. By elongating the cells, they help in the growth process.

Gibberellins– These hormones are responsible for the cell growth in the stem, seed germination and flowering.

Cytokinins– They promote cell division in plants. They also promote the opening of the stomata and delay ageing in leaves.

Abscisic acid– This hormone inhibits the growth of the plant. And therefore, it promotes dormancy in seeds and buds. The detachment of fruits, flowers and falling of leaves etc. are promoted by this hormone.

Coordination is the ability to use different parts of the plant together, smoothly and efficiently. In plants, coordination is due to the result of a chemical system, wherein plant hormones or phytohormones have a major role.

Thnku,ji

In diploid organisms, a pair of chromosomes determines the sex of individual. They are called the sex chromosomes or allosomes or heterosomes. Sex determination is the process by which the fertilised egg develops the characters of either the male or female. This process occurs at the time of fusion of egg and sperm.2 conditions

The female has XX chromosome and male has XY hence during zygote formation the egg has X chromosome and it depends on the sperm which chromosome it is carrying. If it is carrying Y chromosome the zygote will be of XY that is a male.If the sperm is carrying X chromosome then the zygote will be of XX that is female.

Recombinant DNA technology, joining together ofDNAmolecules from two different species that are inserted into a host organism to produce new genetic combinations that are of value to science, medicine, agriculture, and industry.

DNAor deoxyribonucleic acid is a long molecule that contains our unique genetic code. Like a recipe book it holds the instructions for making all the proteins in our bodies. Your genome?is made of a chemical called deoxyribonucleic acid, orDNAfor short.

deoxyribonucleic acid

deoxyribonucleic acid is correct answer

DNA means Deooxyribonucleic acid is a type of nucleic acid present in cell..it stores genetic information..and are responsible for storage and transfer of genetic characters i.e.responsible for heredity.

DNAor deoxyribonucleic acid is a long molecule that contains our unique genetic code. Like a recipe book it holds the instructions for making all the proteins in our bodies. Your genome?is made of a chemical called deoxyribonucleic acid, orDNAfor short

deoxyribonucleic acid, a self-replicating material which is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.

Deoxyribonucleic acid(/diːˈɒksɪˌraɪboʊnjuːˌkliːɪk,-ˌkleɪ-/(listen);[1]DNA) is a molecule composed of two chains that coil around each other to form adouble helixcarryinggeneticinstructions for the development, functioning, growth andreproductionof all knownorganismsand manyviruses. DNA andribonucleic acid(RNA) arenucleic acids; alongsideproteins,lipidsand complex carbohydrates (polysaccharides), nucleic acids are one of the four major types ofmacromoleculesthat are essential for all known forms oflife.

The two DNA strands are also known aspolynucleotidesas they are composed of simplermonomericunits callednucleotides.[2][3]Each nucleotide is composed of one of fournitrogen-containingnucleobases(cytosine[C],guanine[G],adenine[A] orthymine[T]), asugarcalleddeoxyribose, and aphosphate group. The nucleotides are joined to one another in a

DNA or deoxyribonucleic acid is a long molecule that contains our unique genetic code. Like a recipe book it holds the instructions for making all the proteins in our bodies.

Yourgenomeis made of a chemical calleddeoxyribonucleic acid, or DNA for short.

DNA contains four basic building blocks or ‘bases’:adenine (A),cytosine (C),guanine (G) andthymine (T).

The order, or sequence, of these bases form the instructions in the genome.

DNA is a two-stranded molecule.

DNA has a unique ‘double helix’ shape, like a twisted ladder.



An illustration to show the double helix structure of DNA.Image credit: Genome Research Limited

Each strand is composed of long sequences of the four bases, A, C, G and T.

The bases on one strand of the DNA molecule pair together withcomplementary bases on the opposite strand of DNA to form the ‘rungs’ of the DNA ‘ladder’.

The bases always pair together in the same way,A with T, C with G.

Each base pair is joined together byhydrogen bonds

Each strand of DNA has a beginning and an end, called 5’ (five prime) and 3’ (three prime) respectively.

The two strands run in the opposite direction (antiparallel) to each other so that one runs 5’ to3’ and one runs 3’ to5’, they are called the sense strand and the antisense strand, respectively.

The strands are separated duringDNA replication

This double helix structure was first discovered by Francis Crick and James Watson with the help of Rosalind Franklin and Maurice Wilkins.

The human genome is made of 3.2 billion bases of DNA but other organisms have different genome sizes.

DNAor deoxyribonucleic acid is a long molecule that contains our unique genetic code. Like a recipe book it holds the instructions for making all the proteins in our bodies. Your genome?is made of a chemical called deoxyribonucleic acid, orDNAfor short.

DNAor deoxyribonucleic acid is a long molecule that contains our unique genetic code. Like a recipe book it holds the instructions for making all the proteins in our bodies. Your genome?is made of a chemical called deoxyribonucleic acid, orDNAfor short.

DNAor deoxyribonucleic acid is a long molecule that contains our unique genetic code. Like a recipe book it holds the instructions for making all the proteins in our bodies. Your genome?is made of a chemical called deoxyribonucleic acid, orDNAfor short.

DNA means deoxyribonucleic acid .It act as genetic material in our body

Deoxyribonucleic acid, or DNA, is a biologicalmacromoleculethat carries hereditary information in many organisms. DNA is necessary for the production of proteins, the regulation, metabolism, and reproduction of thecell. Large compressed DNA molecules with associated proteins, called chromatin, are mostly present inside the nucleus. Some cytoplasmic organelles like themitochondriaalso contain DNA molecules.

Forest fire" means a fire burning uncontrolled on lands covered wholly or in part by timber, brush, grass, grain, or other flammable vegetation. It is the most common hazard in forests.

Forest fires may be caused due to natural or man made reasons.

When the frequency offorest firesin a given area is high, theconsequencescan be devastating. Forest firesincrease carbon dioxide levels in the atmosphere, contributing to the greenhouseeffectand climate change. In addition, ashes destroy much of the nutrients and erode the soil, causing flooding and landslides.

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Transpirationis the process where plants absorb water through the roots and then give off water vapor through pores in their leaves. An example oftranspirationis when a plant absorbs water in its roots.

I Want answer in short

Transpiration pullor the suction force is the force which aids in drawing the water upward from roots to leaves. In leaves, some amount of water is used for photosynthesis and excess water is released into atmosphere through openings called as stomata.

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Sodium vaporand mercuryvaporlampsemityellow and bright bluelight, respectively

The कलर is light yellow

the colour of the light emmited by sodium vapour lamp is yellowish blue

Low-pressure sodium lamps only givemonochromaticyellow light

This is because most of the light emitted from a sodium vapour lamp is concentrated in theyellowpart of the visible spectrum (around 580-590 nm). On the other hand, a mercury vapour lamp is quite suitable for lighting applications.

Plz accepted as best Plz like my answer Plz

t he colours is light in yellow

Nucleus was discovered by Robert brown.

Robert Hooke discovered the cells for the first time in the slice of cork in 1665.Leeuwnhoek discovered free living cells in pond water using an improved microscope in 1674.Robert brown discovered nucleus in cell in 1831.

Robert Hooke discovered the cells for the first time in the slice of cork on 1665

1. c2. a3. bare the answers

Secondary metabolites (SMs) are generally defined as small organic molecules produced by an organism that are not essential for their growth, development and reproduction.

15+26=41-12-11=-2341-23=18

-12+15 =33+26 =2929-11 = 18answer is 18

18 is the right answer.

18 is the correct answer

-12+15+26-11= -23+41=18

15+26=-12-11=41=-2341-23=18

The component that dissolves the other component is called the solvent.

because it helps in transportation of gases

Arespiratory pigmentis a molecule, such as hemoglobin in humans and other vertebrates, that increases the oxygen-carrying capacity of the blood. ... Any of various colored conjugated proteins, such as hemoglobin, occur in living organisms and function in oxygen transfer in cellularrespiration.

Hemoglobin is therespiratory pigmentpresent in blood.Ithasgreataffinity for oxygen and binds strongly withit, forming oxyhemoglobin.Ithelps to transport oxygen from lungs to tissues.

Hemoglobin is therespiratory pigmentpresent in blood.Ithasgreataffinity for oxygen and binds strongly withit, forming oxyhemoglobin.Ithelps to transport oxygen from lungs to tissues.

Aristotle

Zoology (also known as animal science) is the branch of biology dedicated to the study of animal existence. It covers areas starting from the structure of organisms to the subcellular unit of existence. A few zoologists are interested in the biology of precise agencies of animals. Others are concerned with the structure and characteristic of animal bodies. While others observe how new animals are formed and how their characteristics are passed on from one generation to every other. Zoologists look at the interactions of animals with each other and their environments, in addition to the importance of the behavior of animals

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Nitrosomonas convert ammonia into nitrates bya processcallednitrification.

one angle =45opposite to 45 angle = 180-45=135°let one angle = x 2nd angle = 180-xangle 45° and x lie on same arc so X = 45 similarly 135 and 180- x lie on same arc so both angle will 135°

135°is the correct answer

Small disc-shaped structures at the surface of the centromeres are called kinetochores.

The gas evolved is hydrogen.

A mature cork cell is non-living and has cell walls that are composed of a waxy substance that is highly impermeable to gases and water calledsuberin.

thanks for answering it😀👏🙏

Uses

Scissors : Uses for cutting paper

Tweezers are small tools used for picking up objects, used in first aid.

safety pins : Safety pins are commonly used to fasten pieces of fabric or clothing together.

Soilsustains life by helping plants to grow. It also harbors worms, beetles, fungi and bacteria, providing them with the nutrients they need tolive. ...Soilcontains food, water and air that is needed by plants to grow. The healthier thesoil, the more nutrients a plant can soak up.

answer in short

The main causes ofriver pollutionare: Industrial waste: Industries produces large amount of waste which contains toxic chemicals andpollutantssuch as lead, mercury, sulfur etc.

a. Azolla

The bacteriaazollasupplies natural manure to the paddy fields.

Azollais a glidingpteridophyte, which contains asendosymbiontthenitrogen-settlingcyanobacterium Anabaena azollae(Nostocaceaefamily).

is it right

A vessel element or vessel member (trachea) is one of the celltypesfound inxylem, the water conducting tissue of plants. Vessel elements (tracheae) are typically found in flowering plants (angiosperms) but absent from most gymnosperms such as conifers

Importances of soil in human life are:1.It’s a conduit/medium for plant growth

2.soil absorbs the atmospheric nitrogen and fixes it to the plants hence maintaining the nitrogen cycle.

3.Plays vital role in maintaining phosphorous cycle

.4. It act as a stable medium to construct the buildings, houses ,dams ,powerplants etc.

5. It is one of the major source of almost all the minerals and precious rocks apart from the ocean.

6. Helps rain water to get drain/infiltrate and thus forming a ‘AQUIFER’(source of drinking water apart from lakes) and also helps to recharge underground water

The Amoeba proteus is a large protozoan and belongs to the Phyllum Sarcodina. It has an ever changing shape and is approximately 500-1000µnm long. It can almost be seen with the naked eye.

Laminarin is a polysaccharide of glucose found in brown algae and utilized as a food reserve.

option

c. nitrobacter

Nitrosomonasbacteriafirstconvertnitrogen gas tonitrite(NO2-) and subsequently nitrobacterconvert nitritetonitrate(NO3-), a plant nutrient.

-Volvox is a polyphyletic genus of chlorophyte green algae in the family Volvocaceae. -It forms spherical colonies of up to 50,000 cells. -They live in a variety of freshwater habitats, and were first reported by Antonie van Leeuwenhoek in 1700.

Puffballsarefungi, so named because clouds of brown dust-like spores are emitted when the mature fruitbody bursts or is impacted.

Puffballs are in the divisionBasidiomycotaand encompass several genera, includingCalvatia,CalbovistaandLycoperdon.

thnx pooja and somesh

Welcome :-))

Algae

Fungi

Definition

Algae a very large and diverse group of simple autotrophic organisms.

A fungus is a member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and molds (British English: moulds), as well as the more familiar mushrooms.

Domain

Eukaryota

Eukaryota

Kingdom

Protista

Fungi

Term origin

Latin for ‘seaweed’

Latin for ‘mushroom’

Etymology

Unknown

Greek word ‘Sphongos’ meaning, ‘sponge’

Location

Prominent in water bodies, terrestrial environments and in unusual environments such as snow and ice.

Prominent in moist habitats

Survives on

Light, minerals from water

Nutrients from carbon-based life forms

Uses

Fuel, fertilizer, food, pollution control, dyes and plastics

Food, medicine, drugs, pest control, industrial chemicals, and enzymes

Symbiosis

Some species of algae form symbiotic relationships with other organisms.

Many fungi have important symbiotic relationships with organisms from most if not all Kingdoms.

Reproduction

Asexual as well as complex

Asexual, sexual , spore dispersal

Nature

Non-parasitic

Parasitic

Examples of parasitesare tapeworms, fleas, and barnacles.

Aparasiteis anorganismthat lives on or in a hostorganismand gets its food from or at the expense of its host. There are three main classes ofparasitesthat can cause disease in humans: protozoa, helminths, and ectoparasites.

Aparasiticrelationship is one inwhichoneorganism, theparasite, lives off of anotherorganism, the host, harming it and possibly causing death. Theparasitelives on or in the body of the host. A fewexamplesofparasitesare tapeworms, fleas, and barnacles.

liceजुएँ plasmodium virus in liver cellcuscuttaअमर बेल

protozoa,helminths, andectoparasites, tapeworms, fleas , barnacles, lice etc