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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
Explain briefly the mechanism of secondary growth of dicot stem |
| Answer» In botany,\xa0secondary growth\xa0is the\xa0growth\xa0that results from cell division in the cambia or lateral meristems and that causes the\xa0stems\xa0and roots to thicken, while primary\xa0growth\xa0is\xa0growth\xa0that occurs as a result of cell division at the tips of\xa0stems\xa0and roots, causing them to elongate, and gives rise to primary tissue. Secondary growth\xa0is the formation of\xa0secondary\xa0tissues from lateral meristems. It increases the diameter of the\xa0stem. In woody plants,\xa0secondary\xa0tissues constitute the bulk of the plant. They take part in providing protection, support and conduction of water and nutrients. | |
| 352. |
What does linn. Refers to in mangifera indica linn. |
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Answer» In mangifera indica linn...i.e.mango.....linn used to represent the name of the author...which used to name it...here for ex its carolous linnaeus.....and it always used to demonstrate after the name of species i.e. indica Linn represents the name of the author i,e., carolous Linnaeus who first coined the term Mangifera indicaMangifera indica Linn is the scientific name for mango. The Linn is the abbreviation which is used for the scientist who named it, Carolus Linnaeus, whenever such abbreviation is used after the scientific name then it always show the name of the scientist who named it. Mangifera represents the genus and indicia represent the species.\xa0 |
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| 353. |
Ligament kya h |
| Answer» Jo ek bone ko dusre bone se jodhta hai | |
| 354. |
State the role of (1) FSH in female(2)insulin |
| Answer» FSH regulates the development,\xa0growth, pubertal maturation and reproductive processes of the human body. In both males and females, FSH stimulates the maturation of primordial germ cells.\xa0Follicle stimulating\xa0hormone is one of the hormones essential to pubertal development and the\xa0function\xa0of women\'s ovaries and men\'s testes. In women, this hormone stimulates the growth of ovarian follicles in the ovary before the release of an egg from one follicle at ovulation. It also increases oestradiol production.Insulin\xa0helps control blood glucose levels by signaling the liver and muscle and fat cells to take in glucose from the blood.\xa0Insulin\xa0therefore helps cells to take in glucose to be used for energy. If the body has sufficient energy,\xa0insulin\xa0signals the liver to take up glucose and store it as glycogen. | |
| 355. |
What do you mean by photoperiodism and vernalisation? |
| Answer» Photoperiodism . It is the response of plants to periods of day/night. The flowering in some plants depends not only on a combination of light and dark exposures but also their relative durations. The plants that need a longer duration for a period exceeding a well defined critical duration, while the short day plants must be exposed to light for a period less than this critical duration before the flowering is initiated in them.Vernalisation refers specially to the promotion of flowering by a period of low temperature. Significance Vernalisation prevents precocious reproductive development late in the growing season. This enables the plant to have sufficient time to reach maturity. | |
| 356. |
Explain briefly the type of vascular bundles found in stem and root easily |
| Answer» There are mainly three types of vascular bundles:(i) Radial: Those in which the xylem and the phloem lie radically side-by-side (for example, in roots of seed plants). This is the most primitive type.(ii) Conjoint: Those in which the two types of tissues are separated from one another. Here xylem and phloem together form a bundle. The two sub-types are collateral and bicollateral.(a) Collateral: The xylem and phloem lie together on the same radius in such a position that xylem lies inwards and the phloem outwards. Here the phloem occurs on one side of the xylem strand. In the dicotyledonous stem, the cambium is found to be present in between xylem and phloem, such bundles are called open (for example, in\xa0Helianthus) and when the cambium is absent, it is called closed (for example, in monocotyledonous stems).(b) Bicollateral: In such bundles, the phloem is found to be present on both sides of xylem. Simultaneously two cambium strips also occur. Various elements are arranged in the following sequence-outer phloem, outer cambium, xylem, inner cambium and inner phloem. Such bundles are commonly found in the members of Cucurbitaceae. Such bundles are always open.(iii) Concentric: Those in which one type of tissue surrounds or ensheaths the other. The concentric bundles may be of two subtypes, amphivasal bundle as found in Dracaena., Yucca and other monocots and some dicots. If the phloem surrounds the xylem, it is amphicribal as found in many ferns. Such bundles are always closed. | |
| 357. |
Explain (a) actinomorphic(b)epipetallous |
| Answer» Actinomorphic : Actinomorphic flowers can be divided into two radial halves by any radial plane passing through its centre. Examples of these flowers include chilly and mustard.Epipetalous Stamen : Epipetalous stamens are stamens attached to the petals. They are found in brinjal.\xa0 | |
| 358. |
Name the mouth parts of cockroach |
| Answer» Cockroach has biting and chewing type of mouth parts.It consists oflabrum-upper lipa pair of mandiblesa pair of maxillaelabium-lower lip. | |
| 359. |
State the function of gizzard and crop in cockroach |
| Answer» Gizzard is for grinding of food. Crop is for storage of food . | |
| 360. |
Which phyllum has water vascular system? |
| Answer» Water vascular system is present in Echinodermata phylum. | |
| 361. |
What is nutrient? |
| Answer» Nutrients are elements in foods that a living being uses to endure and grow. They are various factors that nutrients are influenced that may be a factor of age, activities, and stage of growth.Types of NutrientsIn general, they are divided into two categories.\tMacronutrients\tMicronutrients | |
| 362. |
Here...the 11 aspirations...whom had taken bio...now after passing 10th |
| Answer» I have taken bio | |
| 363. |
How breast feeding occurs |
| Answer» Prolactin tells the\xa0milk-making glands in your\xa0breast\xa0to make\xa0breast milk. Oxytocin signals the let-down reflex to release the\xa0milk. 2\ufeff It causes the alveoli to contract and squeeze the\xa0breast milk\xa0out into the\xa0milk\xa0ducts. Prolactin causes your alveoli to take nutrients (proteins, sugars) from your blood supply and turn them into\xa0breast milk. Oxytocin causes the cells around the alveoli to contract and eject your\xa0milk\xa0down the\xa0milk\xa0ducts. This passing of the\xa0milk\xa0down the ducts is called the “let-down” (milk\xa0ejection) reflex. | |
| 364. |
What is metagenesis |
| Answer» The alternation of generation between the sexual and asexual phase within the same species is called as metagenesis .It generally shown by cnidarians which exhibits both forms – polyps and medusae .Polyps produce medusae asexually , and medusae forms polyps sexually . example – obellia . | |
| 365. |
Explain why GA³ is applied to juvenile conifers |
| Answer» The prospects for enhancing flowering, for the purposes of breeding and seed supply, appear good, particularly for members of the Pinaceae. The most successful techniques involve the application of the gibberellin A4 and A7 mixture combined with cultural treatments such as drought, root pruning or girdling. There is scope for these techniques to be used in outdoor seed orchards but more particularly with container-grown plants in polythene houses. Less research has been published on enhancing flowering in broadleaves (angiosperms) though there has been considerable attention to factors affecting blossom and fruit development. Techniques that encourage rapid vegetative growth so that plants quickly reach a certain minimum size may be the most promising to promote flowering of broadleaves. Avenues for further research are considered. | |
| 366. |
What is meant by metabolism of organisms? |
| Answer» The sum total of all the chemical reactions occurring inside the living organism is called metabolism. All the activities like growth, reproduction, movements, responsiveness, development, etc., are due to metabolism.Metabolism includes two stages, i.e., anabolism and catabolism. Anabolism includes all the building up reactions, e.g., Photosyntesis and catabolism constitutes breakdown reactions, e.g., Respiration. | |
| 367. |
What is Rhizobium? |
| Answer» Rhizobium (plural: Rhizobia) is the nitrogen fixing bacteria present mainly in the soil. The Rhizobia chemically convert the nitrogen from the air to make it available for the plant.These bacteria live in symbiotic relationship with leguminous plants. The Rhizobia live in nodules in the roots of the plant. These bacteria convert atmospheric nitrogen to nitrates and nitrites which can be used by the plants directly. Nitrogen fertilizers are not required. | |
| 368. |
Briefly describe the structure of chloroplast. State the cheif functions of chloroplast |
| Answer» The chloroplast is bounded by a double membrane layer. There are two distinct regions present inside the chloroplasts. One is grana while the other is stroma. Grana is made up of stacks of disc-shaped structures known as thylakoids. These contain the molecule chlorophyll and are the functional units of chloroplasts. Stroma is the matrix which contains grana and is similar to the cytoplasm in cells in which all the organelles are embedded. Stroma also contains various enzymes, DNA, ribosomes, and other substances. Stroma lamellae connect the stacks of thylakoid sacs. There are two types of reactions by which photosynthesis occur, light reaction and dark reaction. Light reaction occurs in grana while dark reaction takes place in the stroma of chloroplasts.Functions of Plastids\tChloroplasts have a structure called chlorophyll which trap solar energy and this is utilized to manufacture food for the plant.\tThe flowers have different colors because of the pigments called chromoplast. These colors attract insects for pollination.\tLeucoplasts are the colorless plastids which store food in the form of carbohydrates, fats, and proteins. | |
| 369. |
Six classes of enzymes along with their function |
| Answer» \tOxidoreductases: These enzymes bring about oxidation and reduction reactions and hence are called oxidoreductases.\xa0In these reactions, electrons in the form of hydride ions or hydrogen atoms are transferred. When a substrate is being oxidized, these enzymes act as the hydrogen donor. These enzymes are called dehydrogenases or reductases. When the oxygen atom is the acceptor, these enzymes are called oxidases.\tTransferases: These enzymes are responsible for transferring\xa0functional groups from one molecule to another. Example: alanine aminotransferase which shuffles the alpha‐amino group between alanine and aspartate etc. Some transferases also transfer phosphate groups between ATP and other compounds, sugar residues to form disaccharides such as hexokinase in glycolysis.\tHydrolases: These enzymes catalyze reactions that involve the process of hydrolysis.They break single bonds by adding water. Some hydrolases function as digestive enzymes because they break the peptide bonds in proteins. Hydrolases can also be a type of transferases as they transfer the water molecule from one compound to another. Example: Glucose-6-phosphatase that removes the phosphate group from glucose-6-phosphate, leaving glucose and H3PO4.\tLyases: These enzymes catalyze reactions where functional groups are added to break double bonds in molecules or where double bonds are formed by the removal of functional groups. Example: Pyruvate decarboxylase is a lyase that removes CO2\xa0from pyruvate. Other examples include deaminases and dehydratases.\tIsomerases: These enzymes catalyze the reactions where a functional group is moved to another position within the same molecule such that the resulting molecule is actually an isomer of the earlier molecule. Example: triosephosphate isomerase and phosphoglucose isomerase for converting glucose 6-phosphate to fructose 6-phosphate.\tLigases: These enzymes perform a function that is opposite to that of the hydrolases. Where hydrolases break bonds by adding water, ligases form bonds by removal of the water component. There are different subclasses of ligases which involve the synthesis of ATP. | |
| 370. |
What is mastoid process? |
| Answer» Please answer | |
| 371. |
class 11 me kitna % |
| Answer» Depending on your school | |
| 372. |
represent schematically the formation of atp through chemiosmosis in a chloroplast |
| Answer» | |
| 373. |
Sir/ ma\'am please Give advice for 11th |
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Answer» what aasta Have confidence Please,. Gungun,chetna,puja,gauri,amira, , anurag,yashu, anup anyone Please |
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| 374. |
What is pace nacked |
| Answer» | |
| 375. |
Tell about cockroach |
| Answer» Cockroach is nocturnal and omnivores organism. In India some species of cockroach are found like peripleneta americana, blatta orientelies, blatala germenica . They are seen mostly at night time in store-room, kitchen, godawn, etc. The cockroach body is divided in three parts head, thorax and abdomen. | |
| 376. |
What is melanin |
| Answer» Melanin is a black pigment secret by menocyte cells. | |
| 377. |
Difference between prokaryote and eukaryote |
| Answer» \t\xa0ProkaryotesEukaryotesCell and cell sizeAlways unicellular and the size lies in between 0.2- 2.0 micrometers in diameterMostly multi-cellular and the size lies in between 10 – 100 mm in diameterCell wallUsually present; chemically complex in natureWhen present, chemically simple in natureNucleus\xa0Is absent\xa0Is presentRibosomesThese cells consist of ribosomes which are smaller in size and circular in shape when compared to the cells of eukaryotes.The ribosomes of eukaryotes are larger in size and are linear in shape.DNA arrangementCircular in shapeLinear in shapeMitochondriaIs absent\xa0Is presentCytoplasmThe cytoplasm in prokaryotes does not contain the endoplasmic reticulumIn this, the cytoplasm has the endoplasmic reticulumPlasmidsPresent in prokaryotesVery rarely found in eukaryotesRibosomesmall ribosomes.\xa0large ribosomes.\t | |
| 378. |
How important is the presence of air bladder in Pisces |
| Answer» Air bladder in Pisces regulates buoyancy and helps in floating in the water. It prevents them from sinking,(ii) Air bladder is present in members of the class Osteichthyes.(iii) Animals of the class Chondrichthyes do not have air bladder and in the absence of air bladder, the animals have to,swim constantly to avoid sinking. | |
| 379. |
Complete structure of chloroplast in detail |
| Answer» The\xa0chloroplast\xa0has an inner and outer membrane with an empty intermediate space in between. Inside the\xa0chloroplast\xa0are stacks of thylakoids, called grana, as well as stroma, the dense fluid inside of the\xa0chloroplast. These thylakoids contain the\xa0chlorophyll\xa0that is necessary for the plant to go through photosynthesis.\xa0Two membranes contain and protect the inner parts of the chloroplast. They are appropriately named the outer and inner membranes. The\xa0inner membrane\xa0surrounds the stroma and the grana (stacks of thylakoids). One thylakoid\xa0stack\xa0is called a granum. | |
| 380. |
What are mesosomes, write their four function performed in prokaryote |
| Answer» The importance of plasma membrane of bacteria. They help in cell wall secretion ,ATP production ,DNA replication and cell division. | |
| 381. |
Can hormone be called as catalyst? Why or why not |
| Answer» Hormones are not catalyst. They simply initiate biochemical reactions | |
| 382. |
How are nodules formed in leguminous plants |
| Answer» Leguminous plants have root nodules\xa0which provide shelter to a bacteria called Rhizobium. It is very important bacteria for the\xa0plant\xa0as it converts atmospheric nitrogen into usable form called nitrates so that\xa0plants\xa0will be able to make proteins for their growth.\xa0These\xa0plants\xa0have a symbiotic association with the soil\xa0bacteria\xa0called the Rhizobium, that live in their\xa0roots, forming\xa0root nodules\xa0and fix atmospheric nitrogen into the nitrates and nitrites for the\xa0plants\xa0and in turn, the\xa0plants\xa0provide the nutrition to the\xa0bacteria.\xa0 | |
| 383. |
what is sarcomere |
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Answer» Sarcomere is the portion of the myofibril between two successive ‘Z’ lines and is considered to be the functional unit of contraction. difference between two z line |
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| 384. |
Give three properties of essentiality |
| Answer» | |
| 385. |
Why enzyme is called as organic catalyst |
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Answer» Because it speed up the metabolic reactions A catalyst regulates speed of a reaction. Since enzymes are released by living things(hence organic) and it helps in increasing or decreasing the rate of progress, by virtue of its concentration. |
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| 386. |
What is the weightage for human and plant physology |
| Answer» | |
| 387. |
Meaning of Morcological |
| Answer» | |
| 388. |
Why enzymes need more energy at the starting of activity |
| Answer» Energy\xa0is also released during the reaction. The\xa0enzyme\xa0speeds up the reaction by\xa0lowering the activation energy\xa0needed for the reaction to start. Compare the\xa0activation energy\xa0with and without the\xa0enzyme.\xa0Enzymes\xa0generally\xa0lower activation energy\xa0by reducing the\xa0energy\xa0needed for reactants to come together and react.\xa0Enzymes\xa0are biological catalysts. Catalysts\xa0lower the activation energy\xa0for reactions. The\xa0lower the activation energy\xa0for a reaction, the faster the rate. Thus\xa0enzymes\xa0speed up reactions by\xa0lowering activation energy. | |
| 389. |
Does estrogen and progestrone control libido of women |
| Answer» Yes as androgens control of males | |
| 390. |
A small animal easily climb to mountaian bcoz ? |
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Answer» Wrong,see neet 2014 paper Since that animal\'s mass is low so it would expend less energy as compared to an animal of bigger size to climb mountains. |
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| 391. |
What is bolt of rosett |
| Answer» Group of leaves in same node or when nodes get condensed eg. cabbage | |
| 392. |
Why O2 is not a limiting fxtr |
| Answer» Bcoz our atmosphere in present time is oxidizing not reducing, so we have a lot of O2 to respire | |
| 393. |
What is polytene |
| Answer» Polytene chromosomes are large chromosomes which have thousands of DNA strands. They provide a high level of function in certain tissues such as salivary glands. They are produced when repeated rounds of DNA replication without cell division forms a giant chromosome. Thus polytene chromosomes form when multiple rounds of replication produce many sister chromatids which stay fused together. | |
| 394. |
Degeneration of polar body |
| Answer» A\xa0polar body\xa0is a small haploid cell that is formed concomitantly as an egg cell during\xa0oogenesis, but generally does not have the ability to be fertilized. When certain diploid cells in animals undergo cytokinesis\xa0after\xa0meiosis to produce egg cells, they sometimes divide unevenly.\xa0Polar bodies\xa0form because the egg cell (oocyte)\xa0does\xa0not divide evenly. This\xa0is\xa0the type of cell division that results in haploid cells. The cell with more cytoplasm becomes a mature ovum while the\xa0polar body\xa0usually dissolves. The primary\xa0polar body\xa0also undergoes meiosis 2 and makes two secondary\xa0polar bodies. | |
| 395. |
Formation of megasporophyll |
| Answer» Megasporophyll is a leaflike structure that bears the megasporangia. In angiosperms and gymnosperms it is represented by the carpel and ovuliferous scale respectively. Microsporophyll is a modified leaf that bears the microsporangia. In angiosperms and gymnosperms it is represented by the stamens and male scales respectively. | |
| 396. |
Fxn of prostate gland |
| Answer» The\xa0prostate is\xa0a walnut-sized\xa0gland\xa0located between the bladder\xa0and\xa0the *****. The\xa0prostate is\xa0just in front of the rectum. The urethra runs through the center of the\xa0prostate, from the bladder to the *****, letting urine flow out of the body. The\xa0prostate\xa0secretes fluid that nourishes\xa0and\xa0protects sperm.\xa0The main\xa0function\xa0of the\xa0prostate gland\xa0is to secrete an alkaline fluid that comprises approximately 70% of the seminal volume. The secretions produce lubrication and nutrition for the sperm. | |
| 397. |
Is NADH2 ia equivalent to FADH2 |
| Answer» | |
| 398. |
How is eukaryotic ribosomes differ from prokaryotic ribosomes |
| Answer» Ribosomes in the cytoplasm of prokaryotic and eukaryotic cells slightly differ. However, prokaryotes have 70S ribosomes, each consisting of a (small) 30S and a (large) 50S subunit whereas ,eukaryotes have 80S ribosomes, each consisting of (small) 40S and a bound (large) 60S submit.Both prokaryotic and eukaryotic ribosomes are composed of ribosomal RNA and ribosomal proteins. Their basic functioning is protein synthesis. | |
| 399. |
Define erythroblastosis foetalis. |
| Answer» Erythroblastosis fetalis\xa0is hemolytic anemia in the fetus (or neonate, as\xa0erythroblastosis\xa0neonatorum) 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. Erythroblastosis\xa0fetalis an anaemic blood disease of a fetus or newborn child, characterized by erythroblasts in the circulating blood: caused by a blood incompatibility between mother and fetus. | |
| 400. |
Where is goblet cell present? |
| Answer» They are found in epithelial lining of the organs | |