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. It is meiotic formation of haploid microspores from DIPLOID MICROSPORE mother CELL.1. It is meiotic formation of haploid megaspores from diploid MEGASPORE mother cell

In a symbiotic relationship the ORGANISMS are mutually BENEFITED. No organisms are HURT. Example algae and fungi. In parasitic MODE one ORGANISM is harmed from the other organism.⏬Hope it helps u❤Pls mark my answer as brainleist❤❤⏫

tion:Food COMPONENT = Carbohydrates, ProteinFunction = Carbohydrates - These are digested and broken down into GLUCOSE and PROVIDE energy to the body.Protein - help in metabolism act as ENZYMES and hormones

te....... GERMINATION is the process by which an organism grows from a seed or SIMILAR structure. The most common example ofgermination is the sprouting of a SEEDLING from a seed of an ANGIOSPERM or gymnosperm.Hope this will help you...... #AD

the MAIN difference between SEXUAL and asexual reproduction.• Sexual reproduction just MEANS combining genetic material from two parents. • Asexual reproduction PRODUCES offspring genetically IDENTICAL to the one parent.

Ahars STRUCTURES in Bihar and KATTAS structure in Karnataka are EXAMPLES of water harvesting. These types of AGE old structures can be USED for water harvesting.I hope it helps you.....plzzz mark it as brainaliest......

Root PRESSURE'. It is the transverse osmotic pressure within the cells of a root SYSTEM that CAUSES sap to rise through a plant STEM to the LEAVESPLZ mark as brainlist answer

Biomagnification is DEFINED as the accumulation of a particular substance in the body of the organisms at different trophic levels of a FOOD chain. One EXAMPLE of biomagnification is the accumulation of insecticide DDT which gets ACCUMULATED in zooplanktons. SMALL fishes consume these zooplanktons.

Meristematic TISSUES are the plant tissues which are made up of actively dividing cells. These tissues actively divide and lead to the growth of the plant body. They are FOUND at the growth points of the plant LIKE tips of root, stem and branches etc. Cells are small with thin cell walls.I HOPE THIS MAY HELP YOU..MARK AS BRAINLIST..✌✌#gundi..

Lacks membrane-bound organelles.if my ANSWER HELPED you then PLEASE mark my answer as the BRAINLIEST answer.

Ribonucleic Acid (RNA) is FOUND MAINLY in the cytoplasm of the cell. and i THINK single stranded RNA is also thereExplanation:if you KNOW the answer then mark me as brainliest

Erythroblastosis fetalis is hemolytic anemia in the fetus (or neonate, as erythroblastosis neonatorum) caused by transplacental transmission of MATERNAL ANTIBODIES to FETAL RED blood cells. The disorder usually results from incompatibility between maternal and fetal blood GROUPS, often Rho(D) antigens.

ingle STRANDED DNA can be found in many viruses.Example - Parvoviridae                                         - They infect mammalian cells.They are unstable.They fold up into different shapesStudies show that single-stranded DNA is mainly found during the period of DNA synthesis.NOTEDNA usually exists as a PAIR of STRANDS that are held tightly together. These two LONG strands coil around each other, in the shape of a double helix.

A biosphere reserve is a ecosystem with plants and animals of unusual scientific and natural INTEREST. It is a label GIVEN by UNESCO to help protect the sites. The plan is to PROMOTE management, research and education in ecosystem conservation. This includes the 'sustainable use of natural resources'.I HOPE THIS MAY HELP YOU..MARK AS BRAINLIST..✌✌#gundi..

Non-reducing sugars do not have an OH group attached to the anomeric carbon so they cannot REDUCE other COMPOUNDS. This is your ANSWERMARK me as brainlist

tion:if FEMALE oocyte is penetrated by SPERM then fertilization occurs . hoped that it HELPS....

Androecium is the 'male stamens' of the FLOWER. ... Both these PARTS are present in some FLOWERS while some flowers have only ONE part. The gynoecium is located in the 'innermost whorl' of the pistils and is surrounded by the stamens. Stamens are pollen-producing parts of a flower.

functions: it PROTECTS against water LOSS, regulates gas exchange, secretes metabolic compounds, and (ESPECIALLY in ROOTS) absorbs water and mineral NUTRIENTS.

The RH BLOOD group system is one of 36 known HUMAN blood group systems. It is the second most important blood group system, after the ABO blood group system. The Rh blood group system consists of 49 DEFINED blood group antigens, among which the FIVE antigens D, C, c, E, and e are the most important.

Mutualism is a symbiotic RELATIONSHIP in which both SPECIES benefit. COMMENSALISM is a symbiotic relationship in which one species benefits while the other is not AFFECTED. Parasitism is a symbiotic relationship in which the parasitic species benefits while the host species is HARMED.

Following are the functions of BLOOD :-•Blood maintains the body TEMPERATURE. •Blood fights with any foreign material entering body. •Blood helps in carrying cellular respiration. •Blood takes haemoglobin carrying oxygen to tissues. •Blood carries hormones to body parts. •Blood carries nutrients to body parts. •Blood coagolate the wound. _______________________Following are the functions of lymph:-•The removal of EXCESS fluids from body tissues. ...•Absorption of fatty acids and subsequent transport of fat, chyle, to the CIRCULATORY system.•Production of immune cells (such as lymphocytes, monocytes, and antibody producing cells CALLED plasma cells).------------×-------×-----------×--------

We do not clean ponds or LAKES , but an aquarium needs to be cleaned. ... In the Aquarium the uneaten FOOD as well as the waste generated by the FISHES MIXES with the water and is left untreated due to the lack of decomposers. The waste MATERIALS thus accumulate in the water making it toxic.Explanation:PLEASE MARK ME AS THE BRAINLIEST IF IT IS HELPFUL...

bioluminescent flowers can't REPRODUCE itself , it can reproduce by the in VITRO system LIKE as, tissue CULTURE.

a bisexual FLOWER is CALLED as a complete flower which has both MALE and female PARTS

THE EXISTENCE OF MICROSCOPIC ORGANISMS WAS DISCOVERED DURING THE PERIOD 1665-1683 BY TWO FELLOWS OF THE ROYAL SOCIETY, ROBERT HOOKE AND ANTONI VAN LEEUWENHOEK.THE SCIENTIFIC STUDY OF MICROORGANISMS BEGAN WITH THEIR OBSERVATIONS UNDER THE MICROSCOPE IN THE 1670s BY ANTONI VAN LEEUWENHOEK. IN THE 1850s LOUIS PASTEUR FOUND THAT MICROORGANISMS CAUSES FOOD SPOILAGE , DEBUNKING THE THEORY OF SPONTANEOUS GENERATIONS.HOPE, IT IS HELPFUL TO YOU!!!MARK AS BRAINLIEST...

TrueExplanation:Muscle repair depends on the AVAILABILITY of amino acids, which are the building blocks of protein. When you eat protein, your body breaks it down into its components, amino acids. These amino acids are rearranged and built into new proteins that make muscle tissue larger.or,When we eat protein, our body breaks these LARGE molecules down into smaller units called amino acids. These building blocks are USED for MANY important functions in the body, including GROWTH and repair of muscle, connective tissue and skin.

Direct contactAn easy way to catch most infectious diseases is by coming in contact with a person or animal who has the infection. Three ways infectious diseases can be spread through direct contact are:· Person to person. A common way for infectious diseases to spread is through the direct transfer of bacteria, viruses or other germs from one person to another. This can occur when an individual with the bacterium or VIRUS touches, kisses, or coughs or sneezes on SOMEONE who isn't infected.These germs can also spread through the exchange of body fluids from sexual contact. The person who passes the germ may have no symptoms of the DISEASE, but may simply be a carrier.· Animal to person. Being bitten or scratched by an infected animal — even a pet — can make you sick and, in extreme circumstances, can be fatal. Handling animal waste can be hazardous, too. For example, you can acquire a toxoplasmosis infection by scooping your cat's litter box.· Mother to unborn child. A pregnant woman may pass germs that cause infectious diseases to her unborn baby. Some germs can pass through the placenta. Germs in the vagina can be transmitted to the baby during birth. Indirect contactDisease-causing organisms also can be passed by indirect contact. Many germs can linger on an inanimate object, such as a tabletop, doorknob or faucet handle.When you touch a doorknob handled by someone ill with the flu or a cold, for example, you can pick up the germs he or she left behind. If you then touch your eyes, mouth or nose before WASHING your hands, you may become infected.Insect bitesSome germs rely on insect carriers — such as mosquitoes, fleas, lice or ticks — to move from host to host. These carriers are known as vectors. Mosquitoes can carry the malaria parasite or West Nile virus, and deer ticks may carry the bacterium that causes Lyme disease.Food ContaminationAnother way disease-causing germs can infect you is through contaminated food and water. This mechanism of transmission allows germs to be spread to many PEOPLE through a single source. E. coli, for example, is a bacterium present in or on certain foods — such as undercooked hamburger or unpasteurized fruit juice

tion: A CELL is a the smallest UNIT if life.they are also called building BLOCKS of life.the study of cell is called cytology. Cell was discovered by ROBERT Hooke

................................. (HEMOGLOBIN)

Cell organelles can be DIVIDED into:Membrane-bound organelles (which are found in eukaryotic cells only), andNon-membrane-bound organelles (INCLUDING ribosomes and some of the structures that form the cell's cytoskeleton)Membrane-bound organelles include:NucleusRough Endoplasmic Reticulum (RER)Smooth Endoplasmic Reticulum (SER)MitochondriaChloroplasts (plant cells only)Golgi ApparatusLysosomesPeroxisomes(also called "microbodies" - smaller than lysosomes and contain specific enzymes)Secretory vesicles(sometimes called simply "vesicles")VACUOLE (plant cells only)Non-membrane-bound organelle structures include:Ribosomesand the following structure that form part of the cell's cytoskeleton:Microfilaments (formed from actin)MICROTUBULES (formed from tubulin)Intermediate Filaments (formed from intermediate filament proteins, e.g. keratin)JunctionsCentrosomesCiliaFlagella (of spermatozoa DIFFER from prokaryotic flagella)

seed drill is a funnel-shaped bowl, connected to a SERIES of long tubes which have narrow HOLES. The drill is connected to a PLOUGH and releases the SEEDS gradually, as the plough furrows the land. The seeds get covered by soil AUTOMATICALLY.

minous or non-albuminous MEANS seeds which don't RETAIN the endosperm when it matureseg: PEA, groundnut, beansI hope you have understood FAM

1. Both lays EGGS 2. They both can be found in WATER HOPE it helps..... Pls mark it as brainliest...... # FOLLOW me........

entific names, of course, difficult to learn, have a number of advantages over the common names----1-All hitherto known animals, PLANTS and microorganism, irrespective of their utility, have been provided with scientific names. This has helped in classification. An animal, a plant or a microorganism without a name cannot be classified.2-A newly discovered animal, plant or bacterium can be described or named.3-Each kind of animal, plant or bacterium is given a single scientific name. This not only minimises the number of names one is required to learn in BIOLOGY, but ALSO eliminates the likely confusion of multiple naming.4-An incorrect or inappropriate name can be easily set right.5-The scientific names are universal, being used all over the world irrespective of the language of the people. A Russian student of biology knows what exactly Oryctolagus cuniculus stands for, and so does a Japanese or a German.6-The scientific names indicate relationship of the species with other placed in the same genus.7-The scientific names are often descriptive, indicating some important characteristic of the organism.8-The scientific names are DERIVED from Latin or Greek. Both of these are dead languages. Hence, there is less possibility of change in the meaning of their words.They have a lot of advantages as they are used as universal and doesn't create a difficulty to other people in DIFFERENT countries

Cells come in different shapes—round, flat, long, star-like, CUBED, and even shapeless. Most cells are colorless and see-through. The SIZE of a cell also varies. Some of the SMALLEST are one-celled bacteria, which are too SMALL to see with the naked eye, at 1-millionth of a meter (micrometer) across.

Blood-type in the ABO system is determined by three ALLELES  (IA , IB , IO) at the Isoagglutinin locus on Chromosome 9. The IAand IB alleles determine ANTIGENIC proteins on the surface of red blood cells, which in turn cause the immune system to develop antibodies against the antigen not present. An individual who is IAIB has both antigens, and therefore does not generate antibodies to either: alleles IA and IB are thus co-dominant. Individuals who are IAIA or IAIO have the same blood type and generate anti-B antibodies: IAis thus dominant to IO.  The same principles apply to IBIB and IBIO, such that IB is dominant to IO. An individual who is IOIO has no antigens, and generates antibodies to both.    TESTS for ABO blood type involve mixing purified A' (anti-A) and B' (anti-B) antibodies with the blood to be typed. Type A blood coagulates in the PRESENCE of A' antibody, type B reacts with B' antigen, type AB with neither, and type O with both. The same reaction would occur in vivo, which necessitates typing of blood prior to transfusion. Persons with an IA or IB allele cannot receive blood from a person with either an IB or an IA allele, respectively. That is, type A persons cannot receive Type B or AB blood, and vice versa.    In TV medical shows, the frequent request for "O negative" blood reflects the fact that Type O blood is compatible with any ABO blood type: Type O is thus described as the 'universal donor'. Type AB is a 'universal recipient' due to the lack of antibody production, which is fortunate because the AB type is the RAREST.    "Negative" refers to the second major blood-type locus, the Rh (Rhesus ) factor, with two alleles Rh+ and Rh-, where the first is a simple dominant to the second and produces an antigen absent in the second. Following the same principles as in ABO,  Rh- blood can be safely transfused to any recipient. Note that Rh- persons constitute only  ~15% of the North American population.HOPEthis helps you please make myanswer as brainlist and follow me...plzzz

aquapaqus is the ANSWERS

The raw materials required for photosynthesis are CARBON DIOXIDE and WATER. Photosynthesis : Preparation of FOOD by the GREEN Leaves of a PLANT from carbon dioxide and water in the presence of Sunlight and chlorophyll is CALLED photosynthesis

tion:Nitrogen is an essential nutrient for plant growth. But farmers who cultivate pulse crops like GREEN gram, bengal gram, black gram, etc. do not APPLY nitrogenous fertilisers during CULTIVATION. It is because some AMOUNT of nitrogen is also present in the soil that help the plants grow.