22339 + Interview Questions in Biology in Class 11 Page 420 InterviewSolution

20951.	Question : Angiospermic embryosac has 2-celled/3-celled egg apparatus.
Answer» SOLUTION :3-celled

Discussion

20952.	Question : Andromonoecious guggal (Commiphora wightii) plants population are those that
Answer» PRODUCE more MALE flower bearing plants and a few female flower bearing plants in a population Produce more female flower bearing plants and a few male flower bearing plants in a population Produce male flowers bearing plants and female flowers bearing plants in EQUAL number in a population Produce both male and BISEXUAL flower bearing individual in a population Answer :D

Discussion

20953.	Question : …….and asbestosis are occupational respiratory diseases resulting from inhalation
Answer» SOLUTION :SILICOSIS.

Discussion

20954.	Question :......................and ................... are storage polysaccharides.
Answer» SOLUTION :STARCH, GLYCOGEN

Discussion

20955.	Question : Ancestors of seed plant possess
Answer» VASCULAR bundles Seed habit HETEROSPORY Heterotrichous habit Solution :Ancestors of seed PLANT POSSESS heterospory

Discussion

20956.	Question : Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by the
Answer» ABSENCE of secondary XYLEM absence of secondary phloem presence of CORTEX position of PROTOXYLEM

Discussion

20957.	Question : Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by
Answer» absence of secondary PHLOEM PRESENCE of CORTEX position of protoxylem absence of secondary XYLEM Answer :C

Discussion

20958.	Question : Monocot root differs from dicot root in having
Answer» Collateral and closed VASCULAR bundles Sclerenchymatous bundle sheath extensions More number of stomata on the ABAXIAL surface than the adaxial surface UNDIFFERENTIATED mesophyll SECONDARY Growth Answer :C

Discussion

20959.	Question : Anastral mitosis is the characteristic feature of
Answer» LOWER animal HIGHER animals Higher PLANTS All LIVING organisms Solution :Higher plants

Discussion

20960.	Question : Anaphase promoting complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is (2017) expected to occur ?
Answer» Chromosomes will not condense Chromosomes will be fragmented Chromosomes will not segregate RECOMBINATION of CHROMOSOME arms will Answer :C

Discussion

20961.	Question : Anaphase promoting complex APC is a protein degraddation macchinery necessary for propermitosis of animal cells. If APC is defective in human cell, which of the following is expected to occur ?
Answer» CHROMOSOMES will be fragmented Chromosomes will not CONDENSE Chromosomes will not segregate Recombination of chromosomes will occur Solution :Chromosomes will not condense

Discussion

20962.	Question : Anamniotic tetrapods are
Answer» PISCES REPTILES AVES AMPHIBIANS ANSWER :D

Discussion

20963.	Question : Analyse the events during every stage of cell cycle and notice how the following two parameters change (i) number of chromosomes (N) per cell (ii) amount of DNA content (C) per cell
Answer» Solution :(i) The number of chromosomes get doubled after mitosis TYPE of cell division and number of chromosomes becomes half after meiosis type of cell division. (ii) In S PHASE, DNA replicates `(2 C rarr 4c)` but numbre of chromosomes remains same.

Discussion

20964.	Question : Analogy Type Questions Chrysophytes : diatomaceous earth :: dinoflagellates :
Answer» SOLUTION :RED TIDES

Discussion

20965.	Question : Analogy Type Questions Ustilago : basidiomycetes :: colletotrichum : ....
Answer» SOLUTION :DEUTEROMYCETES

Discussion

20966.	Question : Analogy Type Questions Algal component : Phycobiont :: fungal component : ………
Answer» SOLUTION :MYCOBIONT

Discussion

20967.	Question : Analogy Type Questions Morels : ascomycetes :: puccinia : .........
Answer» SOLUTION :BASIDIOMYCETES

Discussion

20968.	Question : Anaerobic respiration is usually noticed in lower organisms. Human being is an advanced organism whether anaerobic respiration occur in man? If so when and where does it takes place.
Answer» Solution :YES, anaerobic occurs man at certain cases. Anarobic respiration (lactic acid fermentation) occurs in muscle cells of man during heavy EXERCISE, continuous work OUTS running ETC.

Discussion

20969.	Question : Anaerobic respiration occurs only in ………………………………………………
Answer» MITOCHONDRIA GOLGI bodies Nucleus CYTOPLASM Solution :Cytoplasm

Discussion

20970.	Question : Anaerobic respiration cannot continue for long in higher organisms.Why?
Answer» Solution :(i) LESS liberation of energy. (ii)Decomposition of large quantity of substrate. Small amount remains for growth and DEVELOPMENT. (iii)Toxic EFFECT of end PRODUCT in higher CONCENTRATION.

Discussion

20971.	Question : Anabaena have symbiotic association with
Answer» AZOLLA Rhizobium Leguminous plants All of the above Solution :ANABAENA have SYMBIOTIC ASSOCIATION with Azolla.

Discussion

20972.	Question : anabolism : photosynthesis :: catabolism : …………….
Answer» SOLUTION :RESPIRATION

Discussion

20973.	Question : An unconscious patient is rushed into the emergency room and needs a fast blood transfusion. Because there is no time to check her medical history or determine her blood type,which type of blood should you as her doctor, give her ?
Answer» A AB `O^+` O Solution :`O^+`

Discussion

20974.	Question : An ovule which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is
Answer» hemitropous campylotropous anatropous amphitropous ANSWER :A

Discussion

20975.	Question : An ovule is an equivalent of:
Answer» MEGASPORANGIUM MEGASPOROPHYLL MEGASPORE FEMALE GAMETE

Discussion

20976.	Question : An oviparous mammal in the following is
Answer» PLATYPUS kangaroo FLYING FOX blue whale ANSWER :A

Discussion

20977.	Question : An overweight high school student, is overheard telling her friend that she is going to research how she can transform some of her white fat to brown fat. What is her rationale here (assuming it is possible)?
Answer» Solution :1. White fat is SAID to be 'Bad fat' since it hoards calories and contributes to obesity. 2. Brown fat is said to be 'good fat' which helps burn calories. 3. Research has proved that this CONVERSION of white fat to brown fat is possible, so that calories will be burnt and accumulation of fat leading to obesity and related health TISSUES can be avoided.

Discussion

20978.	Question : An anther has 1200 pollen grains. How many pollen mother cells must have been there to produce them ? Explain.
Answer» SOLUTION :301-POLLEN mother CELLS. 301 Pollen mother cells UNDERGO MEIOSIS producing 1204 pollen grains. Because at the end of meiosis, each pollen mother cells produces 4 pollen grains.

Discussion

20979.	Question : An ornamental plant belonging to the family Liliaceae is :
Answer» CLITORIA ternatea Cestrum nocturnum PETUNIA violacea TULIPA gesneriana Solution :Tulipa gesneriana

Discussion

20980.	Question : An organism has two pair of chromosomes (i.e., chromosome number = 4). Diagrammatically represent the chromosomal arrangement during different phases of meiosis-II.
Answer» Solution :Meiosis is a REDUCTIONAL type of cell DIVISION in which number of chromosomes becomes half in number from parent cell. The unit of chromosomes are seen in TWO parent cells during Meiosis-I. THUS two cells which, N chromosomes are there they enter into meiosis that shows mitosis type of division.

Discussion

20981.	Question : An organism has two pair of chromosomes (i.e., chromosome number = 4), Diagrammatically represent the chromosomal arrangement during different phase of meiosis -II
Answer» SOLUTION :

Discussion

20982.	Question : An organism exclusively with 70S type of ribosomes contains one of the following
Answer» DNA enclosed with in a NUCLEAR membrane Circular NAKED DNA Double stranded DNA with PROTEIN coat Single stranded DNA with protein coat Answer :B

Discussion

20983.	Question : An organic substance bound to an enzyme and essential for its activity is called
Answer» coenzyme holoenzyme apoenzyme isoenzyme Answer :A

Discussion

20984.	Question : An organism exclusively with 70s type of ribosomes contain one of the following
Answer» DNA ENCLOSED within the NUCLEAR membrane circular NAKED DNA double stranded DNA with PROTEIN coat single stranded DNA with protein coat Answer :B

Discussion

20985.	Question : An organic substance bound to an enzymes and essential for its activity is called
Answer» COENZYMES APOENZYME ISOENZYME holenzyme ANSWER :B

Discussion

20986.	Question : An organelle with cristae.
Answer» SOLUTION :MITOCHONDRIUM

Discussion

20987.	Question : An organelle with internal cross section showing the characterstic 9+2 array is
Answer» microtubule microfilament cilia and flagellum tubulin Answer :C

Discussion

20988.	Question : An orderly sequence of community development on an area is called
Answer» SUCCESSION Cover Establishment Diversity Answer :A

Discussion

20989.	Question : An onion peel was taken and (a) placed in salt solution for five minutes. (b) after that it was placed in distilled water. When seen under the microscope what would be observed in (a) and (b) ?
Answer» Solution : (a) protoplasm shrinks and accumulates in an ANGLE of cell. Water comes out of the cell. (B) later it is put in distilled water then cytoplasm again obtains its original POSITION. Water enters into cell and cell becomes TURGID.

Discussion

20990.	Question : An obstruction of the bile duct causes……………………………
Answer» SOLUTION :JAUNDICE

Discussion

20991.	Question : An investigator places as isolated neuron in a calcium-free medium, gives the neuron a suprathreshold stimulus and then performs an assay to test whether neurotransmitter is released into the medium. Which of the following outcomes would you predict ?
Answer» No neurotransmitter is detected since influx of calcium into the synaptic KNOB is required for neurotranmitter release No neurotransmitter is detected since influx of calcium is required in order for the NEURON to conduct an action potential Neurotransmitter is detected since calcium is not required for action potential CONDUCTION and the initial stimulus was suprathreshold We cannot predict the outcome WITHOUT knowing whether the neuron was myelinated or not. Answer :A

Discussion

20992.	Question : An investigator places an isolated neuron in a calcium-free medium, gives the neuron a suprathreshold stimulus and then performs an assay to test whether neurotransmitter is released into the medium.Which of the following outcomes would you predict ?
Answer» No neurotransmitter is detected since influx of calcium into the synaptic knob is required for neurotransmitter release. No neurotransmitter is detected since influx of calcium is required in ORDER for the neurons to conduct an action potential Neurotransmitters is detected since calcium is not required for action potential coduction and the initial stimulus was suprathreshold We cannot predict the outcome without knowing whether the NEURON was myelinated or not Solution :Calcium IONS are required for the transmission of nerve impulse at a chemical synapse.When an impulse arrives at a pre-synaptic knob, calcium ions from the synaptic CLEFT enter the cytoplasm of the pre-synaptic knob.The calcium ions cause the movement of synaptic vesicles to the surface of the knob.The synaptic vessels are fused with the pre-synaptic MEMBRANE and get ruptured to discharge neurotransmitters into the synaptic cleft.

Discussion

20993.	Question : An intestinal parasite which causes blockage of the intestinal passage and whose eggs are excreted along with the faces of infected person is
Answer» WUCHERERIA bancrofti ASCARIS EPIDERMOPHYTON Microsporum Answer :B

Discussion

20994.	Question : An instrument deviced by J.C. Bose for proving the pulsating movement of cortex is .............. .
Answer» SEISMOGRAPH Galvanometer Crescograph Radiograph Answer :A::C

Discussion

20995.	Question : An insect organ most equivalent to the human lung infunction is the :
Answer» TRACHEAE MIDGUT FLAME CELLS MALPIGHIAN tubule Solution :tracheae

Discussion

20996.	Question :An insect differs from a spider in which one of the followingWays :
Answer» insects have THREE pairs of legs and TWO pairs of wingswhile SPIDERS have FOUR pairs of legs and no wings insects have four pairs of legs and a pair of wings while spiders have four pairs of legs and no wings insects have three pairs of legs and three pairs of wings while spiders have three pairs of legs and no wings insects have four pairs of legs and two pairs of wingswhile spiders have three pairs of legs and no wings Solution :insects have three pairs of legs and two pairs of wingswhile spiders have four pairs of legs and no wings

Discussion

20997.	Question :An insect circulatory system is best described as:
Answer» totally closed like ours, with arteries and veins similar to ours with general closed vessels but no distinct arteries and veins an open system that mostly WASHES "blood" through the BODY cavities totally ABSENT, each body cell manages on its own to GAIN food and get RID of wastes Solution :an open system that mostly washes "blood" through the body cavities

Discussion

20998.	Question : An input of energy is required for which one of the followingprocesses?
Answer» ACTIVE TRANSPORT DIFFUSION FACILITATED diffusion Osmosis SOLUTION :Active transport

Discussion

20999.	Question : An inflorescene with single, oldest, female flower and many younger male flowers has to be
Answer» verticillaster hypanthodium spike cyathium Answer :D

Discussion

21000.	Question :An inflorescence with pedicellate achlamydeous flowers
Answer» HYPANTHODIUM CYATHIUM Verticellaster SPADIX ANSWER :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : Angiospermic embryosac has 2-celled/3-celled egg apparatus.

Question : Andromonoecious guggal (Commiphora wightii) plants population are those that

Question : …….and asbestosis are occupational respiratory diseases resulting from inhalation

Question :......................and ................... are storage polysaccharides.

Question : Ancestors of seed plant possess

Question : Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by the

Question : Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by

Question : Monocot root differs from dicot root in having

Question : Anastral mitosis is the characteristic feature of

Question : Anaphase promoting complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is (2017) expected to occur ?

Question : Anaphase promoting complex APC is a protein degraddation macchinery necessary for propermitosis of animal cells. If APC is defective in human cell, which of the following is expected to occur ?

Question : Anamniotic tetrapods are

Question : Analyse the events during every stage of cell cycle and notice how the following two parameters change (i) number of chromosomes (N) per cell (ii) amount of DNA content (C) per cell

Question : Analogy Type Questions Chrysophytes : diatomaceous earth :: dinoflagellates :

Question : Analogy Type Questions Ustilago : basidiomycetes :: colletotrichum : ....

Question : Analogy Type Questions Algal component : Phycobiont :: fungal component : ………

Question : Analogy Type Questions Morels : ascomycetes :: puccinia : .........

Question : Anaerobic respiration is usually noticed in lower organisms. Human being is an advanced organism whether anaerobic respiration occur in man? If so when and where does it takes place.

Question : Anaerobic respiration occurs only in ………………………………………………

Question : Anaerobic respiration cannot continue for long in higher organisms.Why?

Question : Anabaena have symbiotic association with

Question : anabolism : photosynthesis :: catabolism : …………….

Question : An unconscious patient is rushed into the emergency room and needs a fast blood transfusion. Because there is no time to check her medical history or determine her blood type,which type of blood should you as her doctor, give her ?

Question : An ovule which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is

Question : An ovule is an equivalent of:

Question : An oviparous mammal in the following is

Question : An overweight high school student, is overheard telling her friend that she is going to research how she can transform some of her white fat to brown fat. What is her rationale here (assuming it is possible)?

Question : An anther has 1200 pollen grains. How many pollen mother cells must have been there to produce them ? Explain.

Question : An ornamental plant belonging to the family Liliaceae is :

Question : An organism has two pair of chromosomes (i.e., chromosome number = 4). Diagrammatically represent the chromosomal arrangement during different phases of meiosis-II.

Question : An organism has two pair of chromosomes (i.e., chromosome number = 4), Diagrammatically represent the chromosomal arrangement during different phase of meiosis -II

Question : An organism exclusively with 70S type of ribosomes contains one of the following

Question : An organic substance bound to an enzyme and essential for its activity is called

Question : An organism exclusively with 70s type of ribosomes contain one of the following

Question : An organic substance bound to an enzymes and essential for its activity is called

Question : An organelle with cristae.

Question : An organelle with internal cross section showing the characterstic 9+2 array is

Question : An orderly sequence of community development on an area is called

Question : An onion peel was taken and (a) placed in salt solution for five minutes. (b) after that it was placed in distilled water. When seen under the microscope what would be observed in (a) and (b) ?

Question : An obstruction of the bile duct causes……………………………

Question : An investigator places as isolated neuron in a calcium-free medium, gives the neuron a suprathreshold stimulus and then performs an assay to test whether neurotransmitter is released into the medium. Which of the following outcomes would you predict ?

Question : An investigator places an isolated neuron in a calcium-free medium, gives the neuron a suprathreshold stimulus and then performs an assay to test whether neurotransmitter is released into the medium.Which of the following outcomes would you predict ?

Question : An intestinal parasite which causes blockage of the intestinal passage and whose eggs are excreted along with the faces of infected person is

Question : An instrument deviced by J.C. Bose for proving the pulsating movement of cortex is .............. .

Question : An insect organ most equivalent to the human lung infunction is the :

Question :An insect differs from a spider in which one of the followingWays :

Question :An insect circulatory system is best described as:

Question : An input of energy is required for which one of the followingprocesses?

Question : An inflorescene with single, oldest, female flower and many younger male flowers has to be

Question :An inflorescence with pedicellate achlamydeous flowers