24277 + Interview Questions in Biology in Class 12 Page 112 InterviewSolution

5551.	Question : The milk secreted by the mammary glands soon after child birth is called
Answer» MUCOUS COLOSTRUM LACTOSE SUCROSE SOLUTION :Colostrum

Discussion

5552.	Question : The milk produced during initial stage of lactation is called____.
Answer» ANSWER :COLOSTRUM

Discussion

5553.	Question : The middle transtion zone of a deep lake is called :
Answer» Epilimnion Thermocline Hypolimnion Aphotic zone Answer :B

Discussion

5554.	Question : The middle man of the body is :-
Answer» Blood Plasma Lymph Serum Answer :C

Discussion

5555.	Question : The microscoppiocl len grains of the past are obtained as fossils. Mention the characteristic of the pollen grains that makes it happen.
Answer» Solution :The Iexine of pollen grains have an outermost HARD layer COMPOSED of a chemical, sporopollenini It is highly RESISTANT to high temperature, STRONG ACIDS and alkali.

Discussion

5556.	Question : The micropyle remains as a small pore in the seed coat. What is its role?
Answer» Solution :Micropyle facilitates the ENTRY of OXYGEN and WATER into the seed during GERMINATION.

Discussion

5557.	Question : The microbial metabolites released or excreted by lysed cell which in very low concentration directy toxic to cells of suscept is defined as:
Answer» SUSCEPTIBILITY PATHOGEN DETOXIFICATION Toxin Answer :D

Discussion

5558.	Question : The microorganism used in the production of acetic acid is …….. .
Answer» ASPERGILLUS niger Rhizopus arrihizus Neurospora gossypi Acetobacter aceti Answer :D

Discussion

5559.	Question : The microbe that produce butyric acid beloges to
Answer» virus mycoplasma bacteria fungi Answer :C

Discussion

5560.	Question : The microbial source of vinegar is _____
Answer» ASPERGILLUS niger Rhizopus arrihizus Acetobacter aceti Streptomyces venezuelae Answer :C

Discussion

5561.	Question :The micro organisms used to produce enzyme pectinase is
Answer» SACCHAROMYCES ASPERGILLUS RHIZOPUS Trichoderma Answer :B

Discussion

5562.	Question : The method which yields the best pictorial form and does not expose the patient to potentially harmful ionizing radiations is
Answer» X-ray radiography Angiography Computed Tomography Magnetic RESONANCE Imaging Answer :D

Discussion

5563.	Question : The micro essential mineral element which has been reported recently is
Answer» Chlorine Nickel Selenium Cobalt Answer :B

Discussion

5564.	Question : The method of producing thousands of plantlets through tissue culture is called ….........
Answer» ANSWER :MICROPROPAGATION

Discussion

5565.	Question : The method of producing thousands of plantlets through tissue culture is called _____A_____ These plantlets genetially identical to each other are called _____B_____
Answer» SOLUTION :(A) MICRO PROPGATION(B) SOMACLONES

Discussion

5566.	Question : The method of obtaining homozygous plants is :
Answer» MASS selection Clonal selection Pure-line selection Hybridization Answer :C

Discussion

5567.	Question :The method of directly injecting a sperm intoovum in Assisted Reproductive Technology is called.(A) GIFT(B) ZIFT(C) ICSI(D) ET
Answer» GIFT ZIFT ICSI ET Solution :(A) GIFT (Gamete INTRA Fallopian Transfer) : In this method, no female can produce an ovum. Ovum received from donor is transferred into her fallopian TUBE but that female has to provide environment for FERTILIZATION and further development. (B) ZIFT (Zygote Intra Fallopian Transfer) : In this method, embryo with 8 blastomere CELLS of initial stage is directly transferred to fallopian tube directly. (C) ICSI : This is a special method. In which ovum that is kept in nutritive medium of laboratory, spermis INJECTED and embryo is formed . (D) ET : In this method, fertilization is done in vitro and prepared zygote, is transferred into uterus of female who cannot be fertilized.

Discussion

5568.	Question : The method, in which recombinant DNA is directly injected into the nucleus of an animal cell is
Answer» micro-injection BIOLISTICS GENE GUN Both (2) and (3) ANSWER :A

Discussion

5569.	Question : The method applied to break the dormancy of seeds due to hard seed coat is:
Answer» Scarification Stratification Modification Variation Answer :A

Discussion

5570.	Question : The metal ion involved in stomatal regulation is :
Answer» Iron Magnesium Zinc Potassium ANSWER :D

Discussion

5571.	Question : The metal in haemocyanin is
Answer» Fe Cu Co Ni Answer :B

Discussion

5572.	Question : The Mesozoic era is also called as
Answer» the GOLDEN AGE of the amphibians the golden age of the reptiles the golden TIME of mammals the golden age of the birds Answer :B

Discussion

5573.	Question : The meristem that occurs in the mature regions of roots and shoots of many plants, particularly those that produce woody axis and appear later than parimary meristem is called the_________
Answer» Apical Secondary Intercalary All Answer :B

Discussion

5574.	Question : The Mendelian experiments cannot be carried out in human beings.
Answer» SOLUTION :The common MENDELIAN experiments are not POSSIBLE in human because generation period is LONG and PROGENY of a couple is small.

Discussion

5575.	Question : The membranous system of grana is responsible for
Answer» trapping LIGHT energy but no ATP and `NADPH_(2)` formation trapping light energy and ALSO for fixation of `CO_(2)` for ATP and `NADPH_(2)` formation but not for light trapping for light capturing and also for `NADPH_(2)` and ATP formation Answer :D

Discussion

5576.	Question : The Mendelian principle which has always stood true is
Answer» The LAW of INDEPENDENT assortment The law of segregation The law of dominance All the above Answer :B

Discussion

5577.	Question : The membranous cover of the ovum at ovulation is
Answer» Corona radiate Zona radiate Zona pellucida CHORION Solution :OVUM internally SURROUNDED by the transparent non cellular zona pellucida and OUTER side by thicker coat calledcorona radiate. At the time fertilization first of all SPERM comes in contact with corona radiata and zona pellucida through that it comes in contact with cytoplasmic membrane of ovum.

Discussion

5578.	Question : The membrane system of chloroplast is not directly involved in :
Answer» Trapping the light energy Synthesis of ATP & NADPH Enzymatic REACTIONS for synthesis of sugar Both (1) and (2) Answer :C

Discussion

5579.	Question : The membranes covering the brain and spinal cord are called pericardium.
Answer» True False Answer :The membranes COVERING the brain and spinal CORD are CALLED meninges.

Discussion

5580.	Question : The membrane of which of the following is devoid of fatty acids?
Answer» MICROSPHERE COACERVATES Prebiotic aggregates Eukaryotes Answer :A

Discussion

5581.	Question : The membrane bone in the appendicular skeleton is
Answer» Clavicle Parietal Scapula Humerus ANSWER :A

Discussion

5582.	Question : The members of which phylum show radial symmetry ?
Answer» Coelenterata Ctenophora Echinodermata All of the above Answer :D

Discussion

5583.	Question : The meiocyte of an onion plant contains 32 chromosomes. Workout the number of chromosomes found in its endosperm.
Answer» Solution :Melocyte has 32 chromosomes (2n). Hence its GAMETE will have 32/2 =16 chromosomes. THEREFORE ENDOSPERM will have `16 xx 3 =48` chromosomes (3r).

Discussion

5584.	Question : The megasporangium of the angiosperms on maturation gives rise to(A) cotyledons(B) seed(C) fruit(D) endosperm
Answer» cotyledons seed fruit endosperm Answer :B

Discussion

5585.	Question : The medullary tube is formed by
Answer» Ectoderm Mesoderm Endoderm None of the above. ANSWER :A

Discussion

5586.	Question : The medial, weight-bearing bone of the leg is
Answer» RADIUS Fibula Ulna TIBIA ANSWER :D

Discussion

5587.	Question : The mechanism that causes a gene to move from one linkage group to another is called
Answer» inversion duplication TRANSLOCATION CROSSING over SOLUTION :translocation

Discussion

5588.	Question : The mechanism of regeneration in Hydra was discovered by
Answer» ANSWER :B

Discussion

5589.	Question : The meaning of protecting tiger means we save Jungle Tiger (higher carnivore of food chain it can not live where trees or herbivores are available. It hunts and in return keeps safe food and water for them.
Answer» SOLUTION :In relation to energy transfer in ecosystem, explain the statement "10kg of deer.s meat is equivalent to 1 kg of lion.s flesh". The FLOW of energy in ecosystem is UNIDIRECTIONAL. From the energy obtained in first trophic level transferred `10 %` energy to second trophic level.

Discussion

5590.	Question : The measure of oxygen required by aerobic decomposers for the bio chemical degradation of organic matter.
Answer» SOLUTION :Biochemcal OXYGEN DEMAND (BOD)

Discussion

5591.	Question : The mean net productivity of two biomes are given. Analyse them and answer the following questions. Tropical rain forest - 450 kg/ sq. kmDesert - 15 kg/sq. kma.Whydoes the productivity of deserts become less than that of tropical rain forest ?b.From the above data analyse the importance of plants in the existence of life.
Answer» Solution :a. In desert the annual rainfall is less than 10 INCHES. The day TEMPERATURE ranges from `100^(@)F` to `135^(@)F`. It is the most driest ecosystem in the environment. So the productivity of desert becomes lesser. b.In tropical RAIN forest the vegetation CONSISTS of luxuriant mass of trees and other plants. Plants are the PRODUCERS of an ecosystem. So the productivity of tropical rain forest is high.

Discussion

5592.	Question : The maximum reabsorption of water without the influence of ADH takes place at
Answer» proximal convoluted TUBULE Henle's LOOP DISTAL convoluted tubule collecting duct Answer :A

Discussion

5593.	Question : The maximum number of chromosomes in a flowering plant is 2n=265 in Poa litorosa. The minumumnumber (Drosophila)is
Answer» 2n=4 2n=14 2n-2 2n=16 Answer :A

Discussion

5594.	Question : the maximum possible rate of increase of population of a given species under ideal condition would depend upon is
Answer» BIOTIC POTENTIAL REALISED natality carrying capacity BIOMASS Answer :A

Discussion

5595.	Question : The maximum growth rate occurs
Answer» STATIONARY PHASE SENESCENT phase LAG phase Exponential phase ANSWER :D

Discussion

5596.	Question : The maximum growth occurs in
Answer» LAG phase exponential phase stationary phase All of these Answer :B

Discussion

5597.	Question : the maximum frequency of a recobinaton of gences at two loci is :
Answer» 0.25 0.5 0.75 1 Answer :B

Discussion

5598.	Question : The maximum diffusion pressure is that of
Answer» MOLAR solution molal solution pure water hyptonic solution Answer :C

Discussion

5599.	Question : The maximum energy in the cell is liberated when
Answer» PYRUVIC acid is converted into ACETYL Co-A Pyruvic acid is converted into`CO_2` And `H_(2)O` Sugar is converted into pyruvic acid Solution :NA

Discussion

5600.	Question : The maximumbiologicalmagnificationof DDTthroughfoodweb is seenin
Answer» BACTERIA ALGAE Man Higher PLANTS ANSWER :C

Discussion

Explore topic-wise InterviewSolutions in .

Question : The milk secreted by the mammary glands soon after child birth is called

Question : The milk produced during initial stage of lactation is called____.

Question : The middle transtion zone of a deep lake is called :

Question : The middle man of the body is :-

Question : The microscoppiocl len grains of the past are obtained as fossils. Mention the characteristic of the pollen grains that makes it happen.

Question : The micropyle remains as a small pore in the seed coat. What is its role?

Question : The microbial metabolites released or excreted by lysed cell which in very low concentration directy toxic to cells of suscept is defined as:

Question : The microorganism used in the production of acetic acid is …….. .

Question : The microbe that produce butyric acid beloges to

Question : The microbial source of vinegar is _____

Question :The micro organisms used to produce enzyme pectinase is

Question : The method which yields the best pictorial form and does not expose the patient to potentially harmful ionizing radiations is

Question : The micro essential mineral element which has been reported recently is

Question : The method of producing thousands of plantlets through tissue culture is called ….........

Question : The method of producing thousands of plantlets through tissue culture is called _____A_____ These plantlets genetially identical to each other are called _____B_____

Question : The method of obtaining homozygous plants is :

Question :The method of directly injecting a sperm intoovum in Assisted Reproductive Technology is called.(A) GIFT(B) ZIFT(C) ICSI(D) ET

Question : The method, in which recombinant DNA is directly injected into the nucleus of an animal cell is

Question : The method applied to break the dormancy of seeds due to hard seed coat is:

Question : The metal ion involved in stomatal regulation is :

Question : The metal in haemocyanin is

Question : The Mesozoic era is also called as

Question : The meristem that occurs in the mature regions of roots and shoots of many plants, particularly those that produce woody axis and appear later than parimary meristem is called the_________

Question : The Mendelian experiments cannot be carried out in human beings.

Question : The membranous system of grana is responsible for

Question : The Mendelian principle which has always stood true is

Question : The membranous cover of the ovum at ovulation is

Question : The membrane system of chloroplast is not directly involved in :

Question : The membranes covering the brain and spinal cord are called pericardium.

Question : The membrane of which of the following is devoid of fatty acids?

Question : The membrane bone in the appendicular skeleton is

Question : The members of which phylum show radial symmetry ?

Question : The meiocyte of an onion plant contains 32 chromosomes. Workout the number of chromosomes found in its endosperm.

Question : The megasporangium of the angiosperms on maturation gives rise to(A) cotyledons(B) seed(C) fruit(D) endosperm

Question : The medullary tube is formed by

Question : The medial, weight-bearing bone of the leg is

Question : The mechanism that causes a gene to move from one linkage group to another is called

Question : The mechanism of regeneration in Hydra was discovered by

Question : The meaning of protecting tiger means we save Jungle Tiger (higher carnivore of food chain it can not live where trees or herbivores are available. It hunts and in return keeps safe food and water for them.

Question : The measure of oxygen required by aerobic decomposers for the bio chemical degradation of organic matter.

Question : The maximum reabsorption of water without the influence of ADH takes place at

Question : The maximum number of chromosomes in a flowering plant is 2n=265 in Poa litorosa. The minumumnumber (Drosophila)is

Question : the maximum possible rate of increase of population of a given species under ideal condition would depend upon is

Question : The maximum growth rate occurs

Question : The maximum growth occurs in

Question : the maximum frequency of a recobinaton of gences at two loci is :

Question : The maximum diffusion pressure is that of

Question : The maximum energy in the cell is liberated when

Question : The maximumbiologicalmagnificationof DDTthroughfoodweb is seenin

Question : The method of producing thousands of plantlets through tissue culture is called ___A_ These plantlets genetially identical to each other are called _B___