22339 + Interview Questions in Biology in Class 11 Page 302 InterviewSolution

15051.	Question :Meiosis process play an important role in evolution of species.
Answer» Solution : Due to crossing over that TAKES place during prophase - I of meiosis, exchange of genetic material takes place between HOMOLOGOUS chromosomes. So new complex of genes are formed and variation of characteristics is formed in offspring. Such variation PLAYS an important role in EVOLUTION of species.

Discussion

15052.	Question : Meiosis occurs in the life cycle of Rhizopus during
Answer» FORMATION of gemetangium germination of zygospore formation of GERM sporangium formation of aplanospores Answer :B

Discussion

15053.	Question : Meiosis occurs in organisms during
Answer» SEXUAL reproduction VEGETATIVE reproduction Both (A) and (B) None of the above ANSWER :A

Discussion

15054.	Question : Meiosis occurs in green algae inside
Answer» GAMETANGIA ZYGOTE SPORANGIA ZYGOSPORE ANSWER :D

Discussion

15055.	Question : Meiosis is important for maintenance of specific number of chromosomes from generation to generation.
Answer» Solution :The number of chromosomes is definite in all organisms of a SPECIES. It is generally diploid. A new organism is formed by formation of zygote through FERTILIZATION of reproductive cells in living organisms. Meiosis takes place during formation of reproductive gamete cells. So reproductive cells are haploid (n) and number of their chromosomes becomes half. Reproductive cells having haploid chromosomes ATTACH and zygote forms in which chromosomes are haploid (2n). Thus meiosis is important for maintenance of SPECIFIC / definite number of chromosomes from generation to generation.

Discussion

15056.	Question : Meiosis is called reductional division.
Answer» Solution : During meiosis, CHROMOSOMES are distributed in half NUMBER than original number in TWO cells. So it is called reductional division. Cells are converted from diploid (2n) to HAPLOID (n) form.

Discussion

15057.	Question : Meiosis is also alled reductional division because it halves the chromosome number in the daughter cells than those in the parental cell. It is so as the parental cell divides twice, while the chromosomes duplicate only once. Mciosis is of three types on the basis of period and site of occurrence of metosis. Answer the following questions on meiosis: (i) Name the longest phase of meiosis-I and sequence of its subphase... (ii) Define crossing over. Give its significance, (in) State one difference between gametic meiosis and zygotic meiosis.
Answer» Solution :(i)Longest phase of MEIOSIS-I is Prophase. Its subphases are: Leptotene, Zygotene, Pachytene, Diplotene and Diakinesis. (ii) CROSSING over is EXCHANGE of genes between non-sister chromatids of homologous chromosomes during pachytengstage of prophase-Iin the presence of recombinase enzyme. It causes RECOMBINATIONS of genes so produces variations. (iii) Gametic meiosis occurs during gametogenesis in the gonads of animals except protozoans and produces haploid gametes, while zygotic meiosis occur during first division of zygote to LEAD to formation of haploid adult organism and is found in protozoans, algae and bryophytes.

Discussion

15058.	Question : Meiosis involves :
Answer» two NUCLEAR divisions with chromosomes dividing only once two nuclear divisions with chromosomes dividing twice two nuclear divisions with chromosomes dividing FOUR times one nuclear DIVISION with chromosomes dividing only once Answer :A

Discussion

15059.	Question :Meiosis in diploid organisms results in
Answer» Production of GAMETES Reduction in the number of CHROMOSOMES INTRODUCTION of variation all of the above ANSWER :D

Discussion

15060.	Question : Meiosis II is similar to mitosis in that:
Answer» CHROMOSOME number is reduced sister CHROMATIDS SEPARATE during anaphase DNA replicates before the division homologous CHROMOSOMES synapse Answer :B

Discussion

15061.	Question : Megasporophyll of Cycas is equivalent to
Answer» Stamen Petal Sepal CARPEL Solution :MEGASPOROPHYLL of CYCAS is EQUIVALENT to carpel.

Discussion

15062.	Question : Megasporophyll of Cycas has the same nature as
Answer» stamen petal sepal carpel ANSWER :D

Discussion

15063.	Question : Megaspores are produces from the megaspore mother cells after
Answer» MITOTIC division formation of THICK wall differentiation MEIOTIC division Answer :D

Discussion

15064.	Question : Megaspore on germination produces female gametophyte.
Answer» ANSWER :TRUE

Discussion

15065.	Question : Megasporangium is equivalent to
Answer» nucellus ovule EMBRYO sac fruit ANSWER :B

Discussion

15066.	Question : Megasporangium is equivalent to :
Answer» EMBRYO sac Fruit Nucellus Ovule ANSWER :D

Discussion

15067.	Question : Medusae form polyp sexually/asexually.
Answer» SOLUTION :SEXUALLY

Discussion

15068.	Question : Medusa is the Reproductive organs of _______ .
Answer» HYDRA AURELIA OBELIA SEA anemone Solution :Aurelia

Discussion

15069.	Question : Medullary rays are absent in
Answer» DICOT STEM MONOCOT stem ROOTS Both 2 and 3 Answer :D

Discussion

15070.	Question : Medullary rays are made up of
Answer» Collenchyna Parechyna Sclerencyna Xylem Answer :B

Discussion

15071.	Question : Medulla oblongata passes out through
Answer» FORAMEN of manro INTERVERTEBRAL foramen foramen OVALE foramen of MAGNUM ANSWER :D

Discussion

15072.	Question : Medulla oblongata can moderatecardicfunction through .
Answer» CNS ANS HEART Brain only ANSWER :B

Discussion

15073.	Question : Medulla is not organized in
Answer» DICOT STEM MONOCOT ROOT Dicot root Monocot stem Answer :D

Discussion

15074.	Question : Medium in which pepsin is active
Answer» NEUTRAL alkaline ACIDIC ISOTONIC SOLUTION :acidic

Discussion

15075.	Question : Medicines are either man made (i.e., synthetic) or obtained from living organisms like plants, bacteria, animals, etc. and hence, the latter are called natural products. Sometimes, natural products are chemically altered by man to reduce toxicity or side effects. Write against each of the following whether they were initially obtained as a natural product or as a synthetic chemical. (a) Penicillin (b) Sulphonamide (c) Vitamin-C (d) Growth hormone
Answer» Solution :(a) Penicillin : obtained from fungi, primarily natural product. (b) Sulphonamide:Syntheticchemical ANTIMICROBIAL AGENT. (c) Vitamin-C : Natural product obtained from sour fruits. (d) Growth HORMONE : GH - It is NATURALLY present in the body growth induces.

Discussion

15076.	Question : Medium for electron movement in TEM is ____
Answer» Air Oil Water VACUUM Solution :Vacuum

Discussion

15077.	Question : Medical Termination of Pregnancy (MTP) is not considered safe after
Answer» Eight weeks TWELVE weeks Eighteen weeks SIX weeks ANSWER :B

Discussion

15078.	Question : Medical check up has shown that a man has an autoimmune disorder with symptoms like fatigue, weakening and paralysis of skeletal muscles. Name the disease, he is suufering from.
Answer» SOLUTION :MYASTHENIA GRAVIS

Discussion

15079.	Question : Mechanical tissue abundant in petioles and pedicels is
Answer» COLLENCHYMA SCLERENCHYMA Sclereids Parenchyma Answer :A

Discussion

15080.	Question : Mayer-Rokitansky syndrome is a condition in which
Answer» Ova are not produced Ovaries are not performed UTERUS is not FUNCTIONING FALLOPIAN TUBE is reptured Answer :C

Discussion

15081.	Question : Maximum photosynthesis occurs in light
Answer» Red Green Very HIGH LIGHT CONTINUOUS light Solution :MAXIMUM PHOTOSYNTHESIS occurs in continuous light.

Discussion

15082.	Question : Maximum photosynthesis occurs in
Answer» Blue LIGHT Red light Green light White light Solution :Maximum PHOTOSYNTHESIS OCCURS in white light.

Discussion

15083.	Question : Maximum percentage of which element occurs in plant ash?
Answer» Magnesium Zinc Potassium Calcium Answer :D

Discussion

15084.	Question : Maximum nutritional diversity is found in the group
Answer» Fungi Animalia Monera Plantae ANSWER :C

Discussion

15085.	Question : Maximum life span of dog in years is
Answer» 5 10 15 20 Answer :D

Discussion

15086.	Question : Maximum enzymes are found in
Answer» LYSOSOMES MITOCHONDRIA Nucleus E.R Answer :C

Discussion

15087.	Question :Maximumamountof oxygen is exchanged fromthe bloodin the
Answer» capillariessurrounding tissuecells ARTERIES of the BODY leftauricle of THEHEART capillariessurroundingthe alveoli Answer :A

Discussion

15088.	Question : Maximum absorption of rainfall water is done by
Answer» TROPICAL DECIDUOUS forest tropical EVERGREEN forest tropical savannah scrub forest Answer :B

Discussion

15089.	Question : Maximum absorption of Na^(+) and K^(+) occurs in
Answer» LOOP of Henle Bowman's capsule DCT PCT

Discussion

15090.	Question : Maxilla, mandible, labrum, antennae
Answer» SOLUTION :ANTENNAE

Discussion

15091.	Question : Maurer's dots occurs in human RBCs infected by
Answer» Plassmodium falciparum PLASMODIUM ovale Plasmodium vivax Plasmodium malariae Solution :maurer's dots are GREEN coloured STRUCTURE which are found in erythrocytic CYCLE of Plasmodium falciparum.

Discussion

15092.	Question : Mature sieve tube has
Answer» NUCLEUS CYTOPLASM only Nucleus and cytoplasm NONE of these Answer :B

Discussion

15093.	Question : Mature neuron and skeletal muscle cell remain permanently in ……….
Answer» `G_1` `G_0` S PHASE `G_2` Phase ANSWER :B

Discussion

15094.	Question : Mature ................ elements of plants and……… blood cells of mammals are devoid of nuclei.
Answer» SOLUTION :SIEVE TUBE , RED

Discussion

15095.	Question : Maturation of gynoecium before anthers of the same flower is
Answer» protogyny protandry heterogamy AUTOGAMY ANSWER :A

Discussion

15096.	Question : Matrix of bone and cartilage can be distinguished by the presence of…………….
Answer» Lacunae Chromatopharcs Haversian canals Adipose CELLS ANSWER :C

Discussion

15097.	Question : Matrix :
Answer» Solution :LOCATION : Stroma of MITOCHONDRIA. FUNCTION : Processes of KERBS. cycle occur.

Discussion

15098.	Question : Mathch the columns I and II and choose the correct combination from the option given
Answer» a-1,b-3,c-2 a-2,b-4,c-1 a-3,b-1,c-2 a-2,b-3,c-1 Solution :

Discussion

15099.	Question : Match column I with column II and select the correct option from the given codes. {:("Column I)(Types of cell)", "Column II(Secretions)"),("Peptic cells",(i)"Mucus"),("Oxyntic cells",(ii)"Alkaline fluid"),("Goblet cells",(iii)"Pro-enzymes"),(,(iv)"HCl"):}
Answer» ii,iii,i iii,ii,i i,ii,iii,iv ii,i,iii Solution :Gastric glands are numerous, microsopic, simple tubular glands PRESENT in the wall of the stomach. They have three COMMON types of gland cells : (i) Peptic (=chief or zymogen) cells that are usually basel in LOCATION and secrete digestive ENZYMES pepsinogen and prorennin (proenzymes) and SMALL amounts of gastric amylase and gastric lipase. (ii) Parietal (= oxyntic) cells secrete HCI and Castle's intrinsic factor. (iii) MUcous (=Goblet) cells secrete mucus.

Discussion

15100.	Question : Match column I with column II and select the correct option from the given codes. {:("column I","Column II"),("Hypothalamus",(i)"Relaxin"),("Anterior Pituitary",(ii)"Progesterone"),("Testis",(iii)"FSH & LH"),("Ovary",(iv)"Androgen"),(,(v)"Gonadotropin releasing hormone"):}
Answer» V,iii,IV,II v,iii,ii,iv i,ii,iv,iii iii,v,iv,ii Answer :A

Discussion

Explore topic-wise InterviewSolutions in .

Question :Meiosis process play an important role in evolution of species.

Question : Meiosis occurs in the life cycle of Rhizopus during

Question : Meiosis occurs in organisms during

Question : Meiosis occurs in green algae inside

Question : Meiosis is important for maintenance of specific number of chromosomes from generation to generation.

Question : Meiosis is called reductional division.

Question : Meiosis involves :

Question :Meiosis in diploid organisms results in

Question : Meiosis II is similar to mitosis in that:

Question : Megasporophyll of Cycas is equivalent to

Question : Megasporophyll of Cycas has the same nature as

Question : Megaspores are produces from the megaspore mother cells after

Question : Megaspore on germination produces female gametophyte.

Question : Megasporangium is equivalent to

Question : Megasporangium is equivalent to :

Question : Medusae form polyp sexually/asexually.

Question : Medusa is the Reproductive organs of _______ .

Question : Medullary rays are absent in

Question : Medullary rays are made up of

Question : Medulla oblongata passes out through

Question : Medulla oblongata can moderatecardicfunction through .

Question : Medulla is not organized in

Question : Medium in which pepsin is active

Question : Medium for electron movement in TEM is ____

Question : Medical Termination of Pregnancy (MTP) is not considered safe after

Question : Medical check up has shown that a man has an autoimmune disorder with symptoms like fatigue, weakening and paralysis of skeletal muscles. Name the disease, he is suufering from.

Question : Mechanical tissue abundant in petioles and pedicels is

Question : Mayer-Rokitansky syndrome is a condition in which

Question : Maximum photosynthesis occurs in light

Question : Maximum photosynthesis occurs in

Question : Maximum percentage of which element occurs in plant ash?

Question : Maximum nutritional diversity is found in the group

Question : Maximum life span of dog in years is

Question : Maximum enzymes are found in

Question :Maximumamountof oxygen is exchanged fromthe bloodin the

Question : Maximum absorption of rainfall water is done by

Question : Maximum absorption of Na^(+) and K^(+) occurs in

Question : Maxilla, mandible, labrum, antennae

Question : Maurer's dots occurs in human RBCs infected by

Question : Mature sieve tube has

Question : Mature neuron and skeletal muscle cell remain permanently in ……….

Question : Mature ................ elements of plants and……… blood cells of mammals are devoid of nuclei.

Question : Maturation of gynoecium before anthers of the same flower is

Question : Matrix of bone and cartilage can be distinguished by the presence of…………….

Question : Matrix :

Question : Mathch the columns I and II and choose the correct combination from the option given

Question : Match column I with column II and select the correct option from the given codes. {:("Column I)(Types of cell)", "Column II(Secretions)"),("Peptic cells",(i)"Mucus"),("Oxyntic cells",(ii)"Alkaline fluid"),("Goblet cells",(iii)"Pro-enzymes"),(,(iv)"HCl"):}

Question : Match column I with column II and select the correct option from the given codes. {:("column I","Column II"),("Hypothalamus",(i)"Relaxin"),("Anterior Pituitary",(ii)"Progesterone"),("Testis",(iii)"FSH & LH"),("Ovary",(iv)"Androgen"),(,(v)"Gonadotropin releasing hormone"):}