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ANSWER:

The foramen of Magendie (also called median aperture) is one of the FORAMINA in the ventricular system and links the fourth ventricle and the quadrigeminal CISTERN. It is one of the three ways that CSF can leave the fourth ventricle and enter the subarachnoid space. The foramen of Magendie is the main path for the outflow of the cerebrospinal fluid from the ventricle. Occlusion of the foramen of Magendie (e.g., by a PLEXUS ependymal cyst) can cause hydrocephalus.

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ANSWER:

The anther normally CONSISTS of two lobes, each with two elongated microsporangia or pollen sacs. ... The anther first appears as a CYLINDRICAL structure composed of a mass of meristematic CELLS, which consists of three “germ' layers designated as L1, L2 and L3, which gives rise to different anther TISSUES.

Answer:

Diffusion is an effective means of transport of substances HELPS in the translocation of food material. 5. Aroma in the vicinity of flowers is nothing but the diffusion of the volatile AROMATIC compounds. THUS, the diffusion helps to attract insects and other ANIMALS for pollination.

Explanation:

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ANSWER:

A nastic response..

Explanation:

This is a correct answer..

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ANSWER:

DUE to AIR pollution

Explanation:

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SPONGES, the members of the phylum Porifera, are a basal Metazoa clade as a sister of the Diploblasts. They are multicellular organisms that have bodies FULL of PORES and channels allowing water to CIRCULATE through them, consisting of jelly-like mesohyl sandwiched between two thin layers of CELLS.

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the three membranes (the dura mater, ARACHNOID, and pia mater) that line the SKULL and VERTEBRAL canal and enclose the brain and spinal CORD.

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1927 ............llj8

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Abscisic acid (ABA) is a plant hormone which functions mainly as a growth INHIBITOR. Abscisic acid promotes the dormancy in SEEDS and BUDS [ this is the opposite of breaking the dormancy].

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ANSWER:

I THINK, (d) all। of the above

EXPLANATION:

PEAS and other BLACK gram.

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Infertility seems to be a GREATER problem AMONG males than females with SICKLE CELL disease, because such men rarely have fathered CHILDREN, whereas many women with sickle cell disease have had sucessful pregnancies.

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Answer:

Leaf-cutting ants often avoid contact with their waste because it harbors microorganisms that are dangerous to the ants and their symbiotic fungus. Therefore, the use of ant waste (i.e., refuse dumps) has been proposed as a deterrent method against leafcutter attack. We tested experimentally whether the age of the refuse dump (fresh vs. old) affects the herbivory-deterrent effect against the leaf-cutting ant Acromyrmex lobicornis Emery (Hymenoptera: Formicidae). Refuse placed around SEEDLINGS SIGNIFICANTLY delayed the initiation attacks of leaf-cutting ants, and this deterrent effect decreased gradually over a period of 30 days. The INITIAL strength of this decrease was the same for newly-discarded ( ‘new’) refuse and refuse from the bottom of the ants’ waste pile (‘old’ refuse). However, the loss of deterrent effect over time was more rapid for new than old refuse. A further experimental manipulation, replacement of refuse every 3 days, had no effect on the deterrent effect for old refuse, but increased this effect for new refuse, although the amount of this increase gradually WEAKENED over the course of the 30-day experiment. We speculate on the possible causes of these effects, their consequences for the HYGIENIC behavior of leaf-cutting ants, and on the use of ant debris as short-term control method against leaf-cutting ants.

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उपरोक्त सभी all of the above

The CORRECT answer is option (B) Diatoms.

The correct answer is option (B) Diatoms.The term Diatoms mean that the photosynthetic, unicellular matter celled algae TRACED in oceans with a characteristic skeleton made up of the silica COMPRISING a huge amount of fossil deposits.

The correct answer is option (B) Diatoms.The term Diatoms mean that the photosynthetic, unicellular matter celled algae traced in oceans with a characteristic skeleton made up of the silica comprising a huge amount of fossil deposits.This fossilized matter the diatoms are termed as diatomaceous earth or diatomite. This is a kind of siliceous sedimentary ROCK belonging to diatoms are CONVERTED to a powdery mass.

Answer:

The plastid is a membrane-bound organelle FOUND in the cells of plants, algae, and some other eukaryotic ORGANISMS. They are considered endosymbiotic Cyanobacteria, related to the Gloeomargarita. PLASTIDS were discovered and named by Ernst Haeckel, but A. F. W. Schimper was the first to provide a clear definition

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Endoplasmic RETICULUM (ER), in biology, a CONTINUOUS membrane system that forms a series of flattened sacs WITHIN the CYTOPLASM of eukaryotic cells and serves multiple functions, being important particularly in the synthesis, folding, modification, and transport of proteins

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answer is PRESENCE of NUCLEOID

ANSWER:

the MATERIAL that a CELL is made of, EXCEPT for the nucleus

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A cell WALL is a structural layer surrounding some types of cells, just outside the cell membrane. It can be tough, flexible, and sometimes RIGID. It PROVIDES the cell with both structural support and protection, and ALSO acts as a filtering MECHANISM. .....❤✌....

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A cell wall is a structural layer surrounding some types of CELLS, just outside the cell membrane. It can be tough, FLEXIBLE, and sometimes rigid. It provides the cell with both structural SUPPORT and protection, and also acts as a filtering MECHANISM.

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The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it CONTAINS the MAJORITY of the CELL's GENETIC material. This material is organized as DNA MOLECULES, along with a variety of proteins, to form chromosomes

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CELL, in biology, the basic membrane-bound unit that CONTAINS the fundamental molecules of LIFE and of which all living things are composed. ... These cells cooperate with other specialized cells and BECOME the building blocks of LARGE multicellular organisms, such as humans and other animals.

ANSWER:

* Clean your SURROUNDINGS..

* Eat healthy food...

* Keep away of flys and mosquitoes..

* If you are ill consult the doctor IMMEDIATELY and don't neglect.......

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CELL is a BASIC UNIT of LIFE........

ANSWER:

IDENTIFY a b c d and e thread like

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The plasma MEMBRANE, also called the cell membrane, is the membrane found in all cells that separates the interior of the cell from the outside environment. ... The plasma membrane consists of a LIPID bilayer that is semipermeable. The plasma membrane REGULATES the transport of materials entering and EXITING the cell.

Answer:

The DNA FULL form is DEOXYRIBONUCLEIC ACID.

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Biology is the natural science that studies life and LIVING ORGANISMS, including their physical structure, chemical processes, MOLECULAR interactions, PHYSIOLOGICAL mechanisms, development and evolution. Despite the complexity of science, certain unifying concepts consolidate it into a single, coherent field. ..........

There is no true NUCLEUS in Bacteria SINCE Bacteria have Prokaryotes, which BASICALLY do not have any well-defined nucleus. Instead there is a nucleoid region within their cytoplasm and the DNA present is that of a single molecule. There is 70 S types of Ribosomes but all cell ORGANELLES are absent.

ANSWER:

studying of fungi is CALLED mycology

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WATER LOGGING

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Answer:

In politics, the OPPOSITION comprises one or more political PARTIES or other organized groups that are opposed, primarily ideologically, to the government (or, in American English, the ADMINISTRATION), party or group in political CONTROL of a city, region, STATE, country or other political body.

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ANSWER:

DIVERSITY of LIVING ORGANISMS

Explanation:

Electricity always returns to the source of the power supply (a transformer or substation). ... When ELECTRICAL current cannot FLOW through a neutral conductor, due to some type of damage or defect in the CIRCUIT, more current will USE a path through the earth to return to the power supply.

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EXPLANATION:

Carl Linnaeus

In the 18th century, Carl Linnaeus published a system for classifying LIVING THINGS, which has been DEVELOPED into the modern classification system.

Each antibody consists of four polypeptides– two heavy chains and two light chains joined to form a "Y" SHAPED molecule. The amino ACID SEQUENCE in the tips of the "Y" varies greatly AMONG different antibodies. This variable region, composed of 110-130 amino acids, give the antibody its specificity for binding antigen.

Millions of chicken were killed recently due to the outbreak of bird flu.

Explanation:

• As there was an outbreak of the bird flu, the farmers had to kill millions of chicken. This was DONE so that the disease could be STOPPED from spreading more and more.

• The farmers had to FACE a lot of PROBLEMS due to this outbreak as they couldn't understand what they could do in order to prevent the disease.

• Also, many farmers had to SUFFER from financial crisis as there chickens were killed and they had no source of income.

The changes that will take place after viral or any other infection depends on whether it is the first time or not, If it is the first time the virus or pathogen has ENTERED the body, the body will identify the antigen(little protein spikes on TOP of the pathogen) and suitable antibodies for it by B-Lymphocytes and T-Lymphocytes which will cause Antigen-antibody reaction further causing death of the pathogen either by TOXICATION or killing infected cells.

The suitable antibodies are proliferated in the body for the second encounter.

In short, WHENEVER our body INTERACTS with a pathogen, it replicates the suitable antibodies for it.

Explanation:

Pumice

Pumice varies in DENSITY according to the thickness of the SOLID MATERIAL between the bubbles; many SAMPLES float in WATER.

Cytopathic effects are the chemical change in cells (refers to structural changes in host cells ) that are caused by viral infection. The infecting virus CAUSES LYSIS of the host cell or when the cell DIES without lysis due to an inability to reproduce. Both of these effects occur due to CPEs.

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ANSWER:

YES,its a very STABLE COMPOUND.

ANSWER:

cancer

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Answer:

grana of chloroplasts

Explanation:

The light-dependent reactions use light energy to make two MOLECULES NEEDED for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. INPLANTS, the light reactions TAKE place in the thylakoid membranes of organelles CALLED chloroplasts.

ANSWER:

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ANSWER:

Phototropism is a growth RESPONSE to a light stimulus. Positive phototropism causes the stems of PLANTS to grow TOWARDS a light source causing the leaves of the plant to be pointing towards the lgth source. this allows the leaves to absorb more light which maximises photosyntesis.

Explanation:

HaR hAr MAhaDev

ABA known to be an ANTAGONISTIC hormone because of these two opposite NATURE:

1. it inhibits growth
2. it PROMOTES dormancy of seeds

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Explanation:

The Science of How HABITS WORK. The process of building a habit can be divided into FOUR simple steps: cue, craving, response, and reward.

This four-step pattern is the backbone of every habit, and your brain runs through these steps in the same ORDER each time. FIRST, there is the cue.