22339 + Interview Questions in Biology in Class 11 Page 298 InterviewSolution

14851.	Question : Methanogens can be used for production of (A) LPG (B) CNG (C) Biogas (D) All of these
Answer» LPG CNG BIOGAS All of these ANSWER :C

Discussion

14852.	Question : Methanogens belong to …………………. .
Answer» Dinoflagellates SLIME moulds EUBACTERIA ARCHAEBACTERIA ANSWER :D

Discussion

14853.	Question : Methanobacterium is………….
Answer» CYANOBACTERIA Malobacteria Eubacteria Archaebacteria Answer :D

Discussion

14854.	Question : Metaphase of mitosis and metaphase of meiosis i
Answer» Solution :In MITOTIC metaphase, the CHROMOSOMES are identical to those of the parent and they are arranged on the equatorial plate. Where in meiotic metaphase I, the chromosomes DIFFER in their genetical composition having gone through the process of crossing over and pairs of homologous chromosomes are arranged on equatiorial plate.

Discussion

14855.	Question : Metaphase and anaphase of mitosis
Answer» Solution :During metaphase, chromosomes are arranged in the EQUATORIAL plane, whereas during anaphase, DAUGHTER chromosomes MOVE towards the OPPOSITE poles of the SPINDLE.

Discussion

14856.	Question : Metamerism first evolved in the phylum
Answer» ASCHELMINTHES ARTHROPODS ANNELIDA PLATYHELMINTHES Answer :C

Discussion

14857.	Question : Metameric segmentation is the characteristic of(a) platyhelminthes and Arthropoda(b) echinodermata and Annelida(c) annelida and Arthropoda(d) mollusca and Chordata
Answer» PLATYHELMINTHES and ARTHROPODA ECHINODERMATA and ANNELIDA annelida and Arthropoda mollusca and CHORDATA

Discussion

14858.	Question : Metameric segmentation is main feature of(a) annelida(b) echinodermata(c) porifiera(d) coelenterata
Answer» annelida echinodermata porifiera COELENTERATA

Discussion

14859.	Question : Metameric segmentation is the main feature of
Answer» ANNELIDA ECHINODERMATA ARTHROPODA Coelenterata Solution :Annelida

Discussion

14860.	Question : Metagenesis refers to
Answer» Presence of a SEGMENTED body and parthenogenetic MODE of reproduction Presence of different morphic FORMS Alternation of generation between asexual and sexual phases of an organism Occurrence of DRASTIC change in form during Answer :C

Discussion

14861.	Question : Metagenesis is seen in the life history of
Answer» Hydra Adamsia Obelia Meandrina ANSWER :C

Discussion

14862.	Question : Metaboly occurs in
Answer» Amoebids Foraminiferans Radiolarians EUGLENOIDS ANSWER :D

Discussion

14863.	Question : Metabolites are organic compounds constantly utilized in various metabolic activities in the cells: What are the two types of metabolites in cells?
Answer» SOLUTION :PRIMARY METABOLITES and SECONDARY metabolites

Discussion

14864.	Question : Metabolites are organic compounds constantly utilized in various metabolic activities in the cells: Give an example for each type of metabolites.
Answer» SOLUTION :Primary metabolites-Protein, carbohydrate,lipid, nucleic ACID or their basic units like amino ACIDS, simple sugar, fatty acid, glycerol, pyrimidines. Secondary metabolites - Pigments, alkaloids, Terpenoids, essential oils, toxins, leotins, drugs, POLYMERIC substances or their examples.

Discussion

14865.	Question : Metabolism is a defining feature of all living organisms without exception. Isolated metabolic reaction in vitro are not living things but surely living reactions, comment.
Answer» Solution :The total sum of all LIVING chemical sections. occuring in a living cell or organism is called metabolism. It INVOLVES formation of various molecules and many molecules get broken down. All organisms exhibit metabolism e.g., protozoans, ALGAE, fungi, bacteria etc. METABOLIC reactions can be DEMONSTRATED outside the body in cell free systems which are neither living non-living. Isolated metabolic reactions in vitro are thus, not living things but surely living reactions. All biological reactions are highly specific selective and are enzyme catalyzed

Discussion

14866.	Question : Metabolism is a defining feature of all living organisms without exception. Isolated metabolic reactions in vitro are not living things but surely living reactions. Comment.
Answer» Solution :The sum total of all the chemical reactions occurring in our body is metabolism. No non-LIVING object exhibits metabolism. Metabolic reactions can be DEMONSTRATED OUTSIDE the body in cell-free systems. An isolated metabolic reaction (s) outside the body of an organism, performed in a test tube is neither living nor non-living. HENCE, while metabolism is a defining feature of all living ORGANISMS without exception, isolated metabolic reactions in vitro are not living things but surely living reactions.

Discussion

14867.	Question : Metabolical mechanical tissue is
Answer» CHLORENCHYMA SCLERENCHYMA PARENCHYMA Collenchyma Answer :D

Discussion

14868.	Question : Mesosomes include
Answer» Vesicles Tubules Lamellae All the above Answer :D

Discussion

14869.	Question : Mesovarium and mesorchium are similar because they are made up of
Answer» DOUBLE fold of PERITONEUM single layer of peritoneum triple FOLDED peritoneum ciliated EPITHELIUM Answer :A

Discussion

14870.	Question : Mesosome :
Answer» SOLUTION :Location : A special structure differentiated by cytoplasmic membrane or CELL membrane, seen in prokaryotic cell. Function : They HELP in cell WALL formation, DNA replication and in respiration, SECRETION processes to increase the surface area of the plasma membrane and enzymatic content.

Discussion

14871.	Question : Mesophyll is not differentiated in the leaf of
Answer» NERIUM CUCURBITA HELIANTHUS Triticum Answer :D

Discussion

14872.	Question : Mesophytes grows on…………………………
Answer» sand SOIL with sufficient WATER rocks dry habitats Solution :SOILS with sufficient water

Discussion

14873.	Question :Mesophytes belonging to Liliaceae are
Answer» ASPARAGUS, Ruscus ALLIUM, LILIUM Aloe, Allium Lilium, Ruscus ANSWER :B

Discussion

14874.	Question : Mesophyll chloroplasts of C_(4)plants have high concentration of"_____________"enzyme.
Answer» SOLUTION :PEP CARBOXYLASE

Discussion

14875.	Question : Mesophyll consists of:
Answer» WAXES and cutin PHOTOSYNTHETIC CELLS LIGNIFIED CELL walls cork but not bark Solution :photosynthetic cells

Discussion

14876.	Question : Mesokaryon is the name of
Answer» CHROMATIN BACTERIAL NUCLEOID Plasmid Condensed CHROMOSOME EVEN in interphase Answer :D

Discussion

14877.	Question : Mesophyll cells and Bundle sheath cells
Answer» SOLUTION :

Discussion

14878.	Question : Meselson and Stahl's experiment proved …………………
Answer» Transduction Transformation DNA is the GENETIC MATERIAL Semi-conservative NATURE of DNA replication Answer :d

Discussion

14879.	Question : Meristematic tissue responsible for secondary growth in plants in the cortex region.
Answer» SOLUTION :CORK CAMBIUM

Discussion

14880.	Question : Meristematic cells do not show
Answer» A large conspicuous nucleus Ergastic SUBSTANCES LIKE TANNINS, RESINS etc. Active metabolism Proplastids Answer :B

Discussion

14881.	Question : Meristematic activity is seen maximum in the :
Answer» SHOOT ROOT hair bud LEAF SOLUTION :shoot

Discussion

14882.	Question : Meristematic tissue located in vascular bundle is ….. . (A) Cork (B) Procambium (C) Sub - cork (D) Fascicular cambium
Answer» Cork Procamblum Sub-cork Fascicular cambium Answer :A::B::C

Discussion

14883.	Question : Meristematic activities are best seen in
Answer» FRUIT Root and shoot APICES At LEAF tips ARS All of these Answer :B

Discussion

14884.	Question : Meristem which produces vascular bundles is
Answer» PROCAMBIUM LATERAL MERISTEM SECONDARY meristem MASS mieristem Answer :A

Discussion

14885.	Question : Mention vegetative characters and floral characters of fabaceae family
Answer» Solution :This family was earlier called Papilonoideae , a subfamily of family Leguminosae. Vegetative Characters : Trees, shrubs, herbs, root with root NODULES. Stem : Erect or climber Leaves : Alternate, pinnately compound or simple, leaf base, pulvinate, stipulate, venation reticulate. Floral characters : Inflorescence : Racemose Flower : Bisexual , zygomorphic Calyx : Sepals five , gamosepalous , imbricate aestivation Corolla : Petals five, polypetalous, papilionaceous , consisting of a posterior standard , two lateral wings , two anterior ONES forming a keel (enclosing stamens and pistil), vexillary aestivation Androecium : Ten, diadelphous, anther dithecous Gynoecium : Ovary superior, mono carpellary, UNILOCULAR with many ovules, style single Fruit : Legume, seed: one to many, non-endospermic Floral Formula : Pisum sativum (pea) plant:(a) Flowering twig (b) Flower (C) Petals (d) Reproductive parts (e) L. S. carpel (f) Floral diagram Economic importance : Many plants belonging to this family are sources of pulses gram, arhar, sem, MOONG, soyabean: edible oil (soyabean, groundnut), dye (indigofera), fibres (sunhemp), fodder (Sesbania, Trifolium), ornamentals (lupin, SWEET pea): medicine (muliathi).

Discussion

14886.	Question : Meoisis result in
Answer» PRODUCTION of gametes reduction in the NUMBER of chromosomes Introduction of variation all of the above Answer :D

Discussion

14887.	Question : Mentomeckelian is specially a characteristic bone of
Answer» RANE TIGRINA AQUAS BOS indicus Felis DOMESTICS Answer :A

Discussion

14888.	Question : Mention various types of stem seen in angiosperms.
Answer» Solution :Majority of angiosperm POSSESS UPRIGHT, VERTICALLY growing erect stem. They are (i) Excurrent, (ii) Decurrent, (iii) Caudex and (iv) CULM.

Discussion

14889.	Question : Mention various forms and functions of essential mineral nutrients.
Answer» Solution : Nitrogen : It is absorbed from soil as `NO_3^(-),NO_2^(-),NH_4^(+)`. It is required in all parts of a plant particularly the meristematic tissues and metabolically active cells. It is ONE of the major constituents of proteins, nucleic acids, vitamins and HORMONES Phosphorus : It is absorbed as `H_2PO_4^(2-) or HPO_4` from the soil. Phosphorus is a constituents of cell membranes, certain proteins, all nucleic acids and nucleotides. It Is required for all phosphorylation reactions. Potassium `(K^+)`: It is absorbed as potassium ion `(K^+)` from the soil In plants, this is required in more abundant quantities in the meristematic tissues, buds, leaves and root tips. Potassium helps to maintain an anion-cation balance in cells. It is involved in protein synthesis, opening and closing of stomata It helps in maintenance of the turgidity of cells, Calcium : (`Ca^(+2)`) It is absorbed as `Ca^(+2)` ion from the soiL In plants it is required by meristematic and differentiating tissues During cell division it is used in the synthesis of cell wall. It is required particularly as calcium pectate in the middle lamella, also needed during the formation of mitotic spindle. It accumulates in older leaves. It is involved in the normal functioning of the cell membranes It activates certain enzymes. It plays an important role in regulating metabolic activities. Magnesium : It is absorbed as ion of (`Mg^(+2)`). It activates the enzymes of respiration, photosynthesis. It is involved in the synthesis of DNA and RNA. Magnesium is a constituent of the ring structure of chlorophyll. It helps to maintain the ribosome structure. Sulphur : It is obtained in the form of (`SO_4^(-2)`). It is present in amino acids named as cysteine and methionine. It is the main constituent of several coenzymes, vitamins (thiamine, biotin. Coenzyme A) and ferredoxin. Iron : Plants obtain Iron in the form of ferric IONS (`Fe^(+3)`). It is required in larger amounts in comparison to other micronutrients. It is an important constituent of proteins involved in the transfer of electrons like ferredoxin and cytochromes. It is reversibly oxidised form `Fe^(+2)` to `Fe^(+3)`during electron transfer. It activates catalase enzyme. It is essential for the formation of chlorophyll. Manganese : It is absorbed in the form of manganous lons(`MN^(2+)`). It activates many enzymes involved in photosynthesis, respiration and nitrogen metabolism. The best DEFINED function of manganese is In the splitting of water to liberate oxygen during photosynthesis. It activates various enzymes especially carboxylases. It is also needed in the synthesis of auxin. Copper : It is absorbed as (`Cu^(+2)`) cupric ion. It is essential for the overall metabolism processes In plants. Like iron it is associated with certain enzymes involved in redox reactions It is reversibly oxidised from `Cu^(+)` to `Cu^(+2)`. Boron : absorbs in the form of `BO_3^(-3) or B_4O_7^(-2)` For uptake and utilization of Cita, membrane functioning, pollen germination, cell elongation, cell differentiation and carbohydrate translocation. Molybdenum : Obtained In the form of molybdate ions (`MoO_2^+`). It k a component of several enzymes, including nitrogenase and nitrate reductase both of which participate in nitrogen metabolism. Chlorine : It is absorbed in the form of chloride ion (`Cl^-`). Along with `Na^+,K^+`It helps in detennining the solute concentration and the anion-cation balance In the cells. It is essential for the water-splitting reaction in photosynthesis, a reaction that leads to oxygen evolution.

Discussion

14890.	Question :Mention two ways of absorption of water by root hairs in plants
Answer» SOLUTION : APOPLAST and SYMPLAST PATHWAY.

Discussion

14891.	Question : Mention two steps of glycolysis in which ATP is utilised.
Answer» SOLUTION :(i) PHOSPHORYLATION of GLUCOSE into Glucose -6-phosphate.

Discussion

14892.	Question : Mention two sexually transmitted diseases caused by virus.
Answer» SOLUTION :AIDS and GENITAL HERPES.

Discussion

14893.	Question : Mention two special properties of nervous tissues.
Answer» SOLUTION :EXCITABILITY and CONDUCTIVITY

Discussion

14894.	Question : Mention two similarities between (a) Aves and mammals (b) A frog and crocodile (c) A turtle and pila
Answer» Solution :(a) Aves and mammals : Both of them are warm BLOODED animals and they have four chambered heart. (b) A frog and crocodile : Both of them can live on land as well as in water. Both of them breathe through lungs. (c) A turtle and pila : Their BODY is covered with a HARD SHELL. Both are oviparous animals.

Discussion

14895.	Question : Mention two physiological functions of abscissic acid.
Answer» Solution :(a) It is a powerful GROWTH inhibitor and inhibits the growth by retarding cell DIVISION and cell ELONGATION. (b) It inhibits seed GERMINATION. It induces seed, and dormancy.

Discussion

14896.	Question : Mention two important products obtained from bark .
Answer» SOLUTION :(a) Cinnamon - SPICE got from the bark of the tree. Eg: Cinnamomum. (b) RUBBER - Got from the LATEX VESSELS of the inner bark of Hevea brasiliensis.

Discussion

14897.	Question : Mention two modifications in reptiles required for terrestrial mode of life.
Answer» SOLUTION :Following are the TWO modifications in reptiles required for TERRESTRIAL mode of life. (a) Dry and cornified skin and epidermal SCALES. (b) Internal fertilization.

Discussion

14898.	Question : Mention two measures under negative eugenics.
Answer» Solution :(i) Sexual separation of the defectives. (II) Sterilization of the defectives (iii) Control of immigration and (IV) Regulation of MARRIAGES

Discussion

14899.	Question : Mention two important groups of Eubacteria.
Answer» SOLUTION :(i) CYANOBACTERIA (II) BACTERIA.

Discussion

14900.	Question : Mention two helminth parasites causing disease to man.
Answer» Solution :Taenia solium (TAPEWORM), SCHISTOSOMA (blood FLUKE).

Discussion

Explore topic-wise InterviewSolutions in .

Question : Methanogens can be used for production of (A) LPG (B) CNG (C) Biogas (D) All of these

Question : Methanogens belong to …………………. .

Question : Methanobacterium is………….

Question : Metaphase of mitosis and metaphase of meiosis i

Question : Metaphase and anaphase of mitosis

Question : Metamerism first evolved in the phylum

Question : Metameric segmentation is the characteristic of(a) platyhelminthes and Arthropoda(b) echinodermata and Annelida(c) annelida and Arthropoda(d) mollusca and Chordata

Question : Metameric segmentation is main feature of(a) annelida(b) echinodermata(c) porifiera(d) coelenterata

Question : Metameric segmentation is the main feature of

Question : Metagenesis refers to

Question : Metagenesis is seen in the life history of

Question : Metaboly occurs in

Question : Metabolites are organic compounds constantly utilized in various metabolic activities in the cells: What are the two types of metabolites in cells?

Question : Metabolites are organic compounds constantly utilized in various metabolic activities in the cells: Give an example for each type of metabolites.

Question : Metabolism is a defining feature of all living organisms without exception. Isolated metabolic reaction in vitro are not living things but surely living reactions, comment.

Question : Metabolism is a defining feature of all living organisms without exception. Isolated metabolic reactions in vitro are not living things but surely living reactions. Comment.

Question : Metabolical mechanical tissue is

Question : Mesosomes include

Question : Mesovarium and mesorchium are similar because they are made up of

Question : Mesosome :

Question : Mesophyll is not differentiated in the leaf of

Question : Mesophytes grows on…………………………

Question :Mesophytes belonging to Liliaceae are

Question : Mesophyll chloroplasts of C_(4)plants have high concentration of"_____________"enzyme.

Question : Mesophyll consists of:

Question : Mesokaryon is the name of

Question : Mesophyll cells and Bundle sheath cells

Question : Meselson and Stahl's experiment proved …………………

Question : Meristematic tissue responsible for secondary growth in plants in the cortex region.

Question : Meristematic cells do not show

Question : Meristematic activity is seen maximum in the :

Question : Meristematic tissue located in vascular bundle is ….. . (A) Cork (B) Procambium (C) Sub - cork (D) Fascicular cambium

Question : Meristematic activities are best seen in

Question : Meristem which produces vascular bundles is

Question : Mention vegetative characters and floral characters of fabaceae family

Question : Meoisis result in

Question : Mentomeckelian is specially a characteristic bone of

Question : Mention various types of stem seen in angiosperms.

Question : Mention various forms and functions of essential mineral nutrients.

Question :Mention two ways of absorption of water by root hairs in plants

Question : Mention two steps of glycolysis in which ATP is utilised.

Question : Mention two sexually transmitted diseases caused by virus.

Question : Mention two special properties of nervous tissues.

Question : Mention two similarities between (a) Aves and mammals (b) A frog and crocodile (c) A turtle and pila

Question : Mention two physiological functions of abscissic acid.

Question : Mention two important products obtained from bark .

Question : Mention two modifications in reptiles required for terrestrial mode of life.

Question : Mention two measures under negative eugenics.

Question : Mention two important groups of Eubacteria.

Question : Mention two helminth parasites causing disease to man.