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tion:bacteria may be NON photosynthetic but CYNOBACTERIA is always photosynthetic. bacteria do not have chlorophyll but cynobacteria have

✔Definition of promeristem. : the portion of a primary meristem that contains actively DIVIDING, UNDIFFERENTIATED, isodiametric thin-walled cells and their most recent derivatives — compare dermatogen, GROUND meristem, procambium.

tion:Reduction division: The first cell division in MEIOSIS, the process by which GERM cells are formed. In reduction division, the CHROMOSOME NUMBER is reduced from DIPLOID (46 chromosomes) to haploid (23 chromosomes). Also known as first meiotic division and first meiosis.

trol and coordination in animals is done by the help of endocrine system and the nervous system.Nervous system :The nervous system in animals consists of spinal cord, brain and nerves.There are other subcomponents which help in nervous system and they are :ReceptorsEffectorsSensory nervesMotor nervesSpinal Cord :Thespinal cord starts from the brain and extends to the vertebral column.It has 31 pairs of spinal nerves.There are 8 pairs of cervical nerves, 12 pairs of thoracic nerves, five pairs of lambar nerves, five pairs of sacral nerves and a pair of coccygeal nerves.MEDULLA oblangate is the upper part of the spinal cord.It receives messages to and from the brain.It also controls reflex actions.Brain :It is the main coordinating centre of the human body.It is protected by cranium.There are three membranes call meninges filled with cerebrospinal fluid which helps in the protection of brain from shocks.The brain has three main parts.The first one is fore brain which consists of cerebrum and olfactory LOBES. This part of the brain is the thinking part and helps in the voluntary actions.The second part is the mid brain which controls reflex actions and involuntary actions.The last and the third part is the hind brain. The cerebellum controls the body movements, posture and balance. The pons control respiration and the medulla helps in the controlling of actions like coughing, vomiting, sneezing, BP, etc.Neurons :The nerve cell is the structural and functional unit of a nervous system.It consists of a cell body known as cyton containing nucleus and cytoplasm.It has several branched structures called dendrites.It has a LONG nerve fibre called axon which is covered by protective covering known as mylene sheath.The junction between two neurones is called synapse.The message passed through the nerve cell in the form of chemical and electrical signals are called nerve impulses.The dendrites receive the information and starts a chemical reaction which produces electrical impulses which passes through the Axon.The neurotransmitters are the biochemical substances which are found at this synaptic junctions and helps in translating nerve impulse to the dendrites of one nerve to the other.Other subcomponents which help in the functioning of nervous system :The receptors are sense organs which receive stimuli and pass the message to the brain and spinal cord. Example : PHOTORECEPTORS, phono receptors, olfactory receptors, gustatory receptors, and tangoreceptors.The effectors are the muscles and glands which respond to the information received from the brain and the spinal cord through the motor nerves.The sensory nerves are the nerves which carry information from the receptors to the brain and spinal cord.The motor nerves are the nerves which carry information from the brain and spinal cord to the effectors.The Nervous System :There are three types of nervous system in our body.The central nervous system which includes the brain and the spinal cord.The peripheral nervous system which include the spinal nerves and the cranial nerves.The Autonomous nervous systemincludes either sympathetic or parasympathetic type. Both of them have opposite action to each other. It controls the organs in our body and involuntary actions.The central nervous system and peripheral nervous system controls voluntary actions.The 4 types of nerves which help in the good functioning of nervous system are :The cranial nerves : It goes from the brain to the other parts of your head.The autonomic nerves : It goes from the spinal cord to the lungs, heart or we can say the autonomous body organs.The Central nerves : It is found in your brain and spinal cord.The peripheral nerves : It goes from spinal cord to our arms, hands, legs and feet.Endocrine system :The endocrine system includes many glands which produces hormones and hormones are directly mixed with blood.There is pituitary gland which produces growth hormone which helps in the stimulation of growth in all the organs.The thyroid gland produces thyroxine which helps in the regulation of metabolism of body growth.The insulin is produced by pancreas which helps in the regulation of blood sugar level.The testosterone is produced by testis which help in the development of male sex organs.The oestrogen is produced by ovaries which helps in the development of female sex organs and regulates MENSTRUAL cycleThe adrenaline is produced by adrenal glands which helps us to decide whether to fight or flight.The hypothalamus releases releasing hormoneswhich stimulates pituitary gland to release hormone.There all other also other glands which help in the proper functioning of the body in an endocrine system.Examples are pineal gland, parathyroid gland, thymus thymus gland, etc.

tion:Risk can be defined as the likelihood or probability of a given hazard of a given level causing a PARTICULAR level of LOSS of DAMAGE. The elements of risk are POPULATIONS, communities, the built environment, the natural environment, economic activities and SERVICES which are under threat of disaster in a given area.

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Yep ... it is right one YAARR... BECOZ ELEPHANT is big

e here is your answer.No BRIGHT colors, special odors, or nectar.Small.Most have no petals.Stamens and stigmas exposed to air currents.Large amount of pollen.Pollen SMOOTH, light, easily airborne.Stigma feathery to CATCH pollen from wind.May have staminate and pistillate flowers, may be monoecious or dioecious.thank you.plzzzzzzzzzz MARK my answer as brainliest.plzzzzzzzzzz follow me.

they are FORMED by interlinking of FOOD CHAIN .they maintain the ECOSYSTEM. Explanation:HOPE this helps u

Your answer was not clear to me still I am answering by my own understandingSandwitch model of Davison and DANIELLI was replaced by fluid MOSAIC model because sandwitch model FAILS to explain the selective permeability of plasmalemma.Explanation:

Paramecium:- 1. It belongs from kingdom protista.2. It comes under phylum protozoa. 3. As protozoan are classified in four types based on locomotory organs so it comes in class Ciliata.4. It is a slipper ANIMALCULE animal.5. CELL mouth which is KNOWN as CYTOSTOME is found in them.6. Cell anus is present in them that is called as cytophge.7. For the purpose of offence and defence in them trichocyst is present.

With respect to the traditional seasons annual plants are generally CATEGORIZED into summer annuals and winter annuals. ... MANY desert annuals are therophytes, because their seed-to-seed LIFE cycle is only WEEKS and they spend most of the year as SEEDS to survive dry conditions.

Such PLANTS undergo CAM photosynthesis as they OPEN up their stomata during night and TAKE in CO2.Stomata remains CLOSE during the day TIME to prevent the loss of water by transpiration. They store the CO2 in their cells until the sun comes out and they can carry on with photosynthesis during the day time.

c) MANGROVES will be able to GROW only in moist and shady REGIONS

to BALANCE the ECOSYSTEM

phanerogams are Flowering plantsExplanation:HOWEVER fern BELONGS to pteridophyte it can be consider as VASCULAR cryptogam

lants have the potentiality to ABSORB water through their entire surface right from root, stem, leaves, flowers, etc. However, as water is available mostly in the soil, only the underground root system is specialized to absorb water. Roots are often extensive and grow rapidly in the soil.   ADVERTISEMENTS: In roots, the most efficient REGION of water absorption is the root hair zone. Each root hair zone has thousands of root hairs. Root hairs are specialized for water absorption. They are tubular outgrowths of 50-1500 μm (0.05-1.5 mm) length and 10 nm in breadth.  Each root hair has a central vacuole filled with osmotically active cell sap and a peripheral cytoplasm. The wall is thin and permeable with pectic SUBSTANCES in the outer layer and cellulose on the inner layer. Root hairs pass into capillary micropores, get cemented to soil particles by pectic compounds and absorb capillary water.  Pathways of Water Movements in Roots:  There are two pathways of water passage from root hairs to xylem inside the root, apoplast and symplast.    (i) Apoplast Pathway: Here water passes from root hair to xylem through the walls of intervening cells without crossing any membrane or cytoplasm. The pathway provides the least RESISTANCE to movement of water. However, it is interrupted by the presence of impermeable lignosuberin casparian strips in the walls of endodermal cells.  (ii) Symplast Pathway: Water passes from cell to cell through their protoplasm. It does not enter cell vacuoles. The cytoplasms of the adjacent cells are connected through bridges called plasmodesmata. For entering into symplast, water has to pass through plasmalemma (cell membrane) at least at one place. It is also called transmembrane pathway. Symplastic movement is aided by cytoplasmic streaming of individual cells. It is, however, slower than apoplastic movements.  Both the pathways are involved in the movement ACROSS the root. Water flows via apoplast in the cortex. It enters the symplast pathway in the endodermis where walls are impervious to flow of water due to the presence of casparian strips.  Here, only plasmodesmata are helpful to allow passage of water into pericycle from where it enters the xylem. Mineral nutrients also have the same pathway as that of water. However, their absorption and passage into symplast mostly occurs through active absorption. Once inside the xylem, the movement is purely along the pressure gradient. Explanation:

Pour some distilled water into a watch glass.Peel off a leaf from half a piece of onion and using the forceps, pull out a piece of transparent onion peel (epidermis) from the leaf.Put the epidermis in the watch glass containing distilled water.Take a few drops of safranin solution in a dropper and transfer this into another watch glass.Using a brush, transfer the peel into the watch glass containing the safranin solution.Let this REMAIN in the Safranin solution for 30 SECONDS, so that the peel is stained.Take the peel from the Safranin solution using the brush and place it in the watch glass containing the distilled water.Take a few drops of glycerine in a dropper and pour 2-3 drops at the center of a dry glass slide.Using the brush, place the peel onto the slide containing glycerine.Take a cover slip and place it gently on the peel with the aid of a needle.Remove the extra glycerine using a piece of blotting paper.Place this glass side on the stage of the compound microscope and view it.ObservationsThere are a large NUMBER of regularly shaped cells lying side by side and each cell has a distinct cell wall.A distinct nucleus is present on the periphery of each cell.Lightly stained cytoplasm is observed in each cell.A large vacuole is present at the centre of each cell, and is SURROUNDED by the cytoplasm.ConclusionAs cell walls and large vacuoles are CLEARLY observed in all the cells, the cells placed for observation are plant cells.PrecautionsUse a brush to transfer the peel from one apparatus to another.Staining of peel should neither be too dark, nor too light.Extra glycerine stain should be removed using blotting paper.hope it helps..!!

full FORM of nadh2 is nicotinamide adenine DINUCLEOTIDE

sin is present in its active form all the time (i.e. EVEN in the absence of food in the GI TRACT) the enzyme can digest the PROTEIN of the smooth MUSCLE cells, thus DISTORTING its structure and function. Therefore, it is necessary for the enzyme to be present in its inactive form.

When EDIBLE OIL is stored for a long time it UNDERGOES oxidation and become s rancid . Fats in the oil have carbon -carbon DOUBLE BOND in their structure .These bonds r broken by oxygen that's why edible oil becomes rancid.Explanation:

tion:Euthanizing. Specimens should be euthanized in a WAY that will leave them undamaged and relaxed.Injection and slitting. Liquid preservatives must be introduced into the body cavity, limbs and tail, either by hypodermic injection or through slits.Fixing. While the specimens are still relaxed, they should be arranged in trays so that they will harden in the proper position.Labeling. Each specimen should be accompanied by CERTAIN data, either attached directly or entered in a NOTEBOOK with a number corresponding to a numbered tag tied to the specimen.Storage. After specimens have been fixed in the proper position, they should be stored in liquid preservative for at least several days, after which they may be allowed to remain in the liquid, or TRANSFERRED to plastic BAGS for temporary storage.

What do you WANT to ASK?

i THINK OPTION ( C ) - BACTERIAL DNA

E HERE IS UR ANSWER ❤. Naming an ORGANISM with two words for genus , SPECIES , and subspecies is called BINOMIAL NOMENCLATURE HOPE THIS WILL HELP U @ RUDEDOLL❤❤❤

hagorean triple CONSISTS of three POSITIVE integers a, b, and c, such that a2 + b2 = c2. Such a triple is commonly WRITTEN (a, b, c), and a well-known example is (3, 4, 5).SWER:Explanation:

Techniques used in recombinant DNA    Fig. 39.1. A gel with electrophoresed DNA in several lanes. Separation of DNA fragments using agarose or poiyacrylamide gel electrophoresis. When genomie DNA, EXTRACTED from any tissue of a plant or animal species, is digested with a restriction enzyme, it is cleaved into segments. The, segments of different sizes can be separated through gel electrophoresis before a molecular probe is used to detect the segments which have sequences similar to those in the probe (for molecular probes, SEE later in this section). Gel electrophoresis involves movement of fragments or molecules under a WELL created on one edge of the gel. The gel may be a cylinder or a SLAB (usually a slab for cloning expt.), about 10 cm long and 0.5 cm thick. The rate of movement of fragments is inversely correlated with the size of fragments or molecules, so that heavier fragments will remain closer to the site of loading and the lighter fragments will move away (Fig. 39.1). Fragments of different sizes will appear as bands on the gel and can be examined or isolated for further study. More OFTEN agarose gels are used, but for separation of fragments differing by few base pairs, polyacrylamide gels are used. Polyacrylamide gels are more commonly used for DNA sequencing experimentsExplanation:

Transient Global Amnesia (TGA) is a syndrome of temporary disruption of short-term MEMORY accompanied by repetitive questioning that resolves itself in usually less than 24 hours.  2. While the etiology (the cause, set of causes, or manner of causation of a disease or condition) remains unknown, TGA most commonly presents in 60 to 65-YEAR-old FEMALES and males at a close to 50-50 SPLIT.  3. The incidence rate has been estimated at 23.5 to 32 per 100,000 per year.  4. The annual recurrence rate is approximately 2.5 to just over 5.0%  5. The clinical symptoms of TGA imply that the site of neurologic involvement would be the medial temporal lobe and hippocampus. This area of the brain is involvExplanation:

somato tropin.......................

Green algae are symbiotic which means they can produce lichen symbiotically (LIVING in harmony) with fungi. They are a SOURCE of food for the aquatic microorganisms whereas the cyanobacteria prove can be helpful or harmful BASED on the sub-species. ... Cyanobacteria are blue green bacteria and cannot PERFORM photosynthesis the way green algae can.Explanation:

1 true 2 true 3 false 4 true 5 false 6 false

The BLOOD PRESSURE is MAXIMUM during SYSTOLIC pressure

The TASKS of modernisation and structural change in agriculture were even more difficult and discouraging at the start of the planning era. The outmoded land tenure system, the primitive technology of cultivation and lack of an infrastructure for raising productivity proved formidable barriers to agricultural advance. The fact that these barriers have been overcome to an extent is one of the major successes of our planning effort. Zamindari and other intermediary tenures have been almost eliminated. The technology of cultivation has changed substantially with the spread of high-yielding varieties and the extension of irrigation, a change which was facilitated by the elaborate network of agricultural research and extension set up during the planning era. One further change of consequence is the establishment of a system of support prices, procurement and public distribution. Significant progress has been made not only in the production of major foodgrains but also in horticultural crops like apples and animal products like EGGS, milk and FISH. ADVERTISEMENTS: Some data on the indicators of modernisation in agriculture are presented in the growth in irrigation is a common feature which runs through the plans THOUGH the pace of expansion in recent years is far higher than before. The use of the new technology based on high yielding varieties and fertilisers spread rapidly only after 1965.1 This difference is reflected in the larger contribution of productivity gain to production growth in the PERIOD after 1964-65. Several changes have taken place in agricultural credit and marketing. The system of cooperative credit has spread, lessening the dependence of the cultivator on exploitative money-lending and trading practices. Institutional term finance for agriculture has growth with the reorientation of the banking system and the establishment of Land Development Banks, Regional Rural Banks and apex institutions like the Agriculture Refinance and Development Corporation. In agricultural marketing, the dominant role of the Food Corporation of India in foodgrain trade and the growth of marketing and processing cooperatives have helped both farmers and consumers. In the case of milk, cooperatives and urban milk supply schemes have captured, a substantial part of the market. These and other’ changes in the field of credit and marketing have altered the very unequal relationship between the farmer and the trader and, by doing so, have stimulated agricultural progress,Explanation:

This is RIGHT ANSWER OK.

Answer: 'Andaman' authorities do not ALLOW tourists to COLLECT 'shells from BEACHES' in order to protect their biodiversity and ecosystem. ... Andaman is an island which CONSISTS of a wide variety of forests and is very rich in 'flora and fauna'. In addition it also contains a 'large number' of coral RESERVES.