24277 + Interview Questions in Biology in Class 12 Page 413 InterviewSolution

20601.	Question : Based on the nature of habitat, succession is of
Answer» Two TYPES-primary and secondary succession Two types- hydrarch and xerarch succession Two types- Terrestrial and aquatic succession Three types- `1^(@),2^(@) and 3^(@)`succession SOLUTION :Two types- hydrarch and xerarch succession

Discussion

20602.	Question : Based on the material used, how will you classify the culture technology?
Answer» Solution :BASED on explants uesd culture TECHNOLOGY are of following types: Organ culture - Embryos, anthers, ROOT and shoot part are used. Meristem culture - Meristematic tissues are used. Protoplast culture - Protoplasts are used Cell culture - Single CELLS or aggregate of cells from callus are used.

Discussion

20603.	Question : Explain Raunkiaer classification in the world's vegetation based on the temperature.
Answer» SOLUTION :Raunkiaer classified the world.s vegetation into the FOLLOWING FOUR types. They are megatherms, mesotherms, MICROTHERMS and hekistotherms.

Discussion

20604.	Question : Based on cellular mechanisms there are two major types of regeneration found in the animals. Which one of the following is the correct example of the type mentioned ?
Answer» Morphallaxis-Regeneration of two transversely cut equal pieces of a Hydra into two small Hydras. Epimorphosis-Replacement of old and dead erythrocytes by the new ones. Morphallaxis-Healing up of a WOUND in the skin. Epimorphosis- Regeneration of crushed and filtered out pieces of a Planaria into as MANY new Planarians. Solution :Based on cellular mechanisms, regeneration can be DIVIDED into two broad categories : morphallaxis and epimorphosis. Morphallaxis refers to the type of regeneration in which lost BODY parts are replaced by the remodelling of the remaining TISSUE. In this type of regeneration, little or no cellular proliferation, little or no cellular proliferation takes place during the regeneration process. A classic example of an organism that regenerates using this mechanism is the Hydra. When a Hydra is cut into two pieces, two Hydra will be regenerated, both smaller than the parental Hydra. Once regeneration is completed, the two Hydra can continue to grwo and reach the size of their original parent. In contrast to morphallaxis epimorphosis require active cellular proliferation prior to the replacement of the lost body part. For eg. Planarian, which are flatworms, regenerate using a mechanism in which pre-existing stem cells, known as neoblasts, begin to proliferate and migrate to the injured site in response to injury. These cells then form a mass of proliferating cells, knwon as regeneration blastema, that will later differentiate into the specialized cells that comprise the regenerated structure. Most tissue regenration in mammals also belong to the epimorphosis. For example, mammals also belongs to the epimorphosis. For example, mammals can regenerate their muscle, bone epithelia of the skin and gut, blood, and some neurons by activating pre-existing stem cells or progenitor cells.

Discussion

20605.	Question : Based on of the effect of translation, classify mutations.
Answer» Solution :(a) SILENT - sense MUTATION (B) MIS - sense mutation (c) Non - sense mutation (d) Frameshift mutation

Discussion

20606.	Question : Based on Lyon's hypothesis, mention the number of Barr bodies in XXY males, XO females.
Answer» SOLUTION :XXYMALES - One BARR body. XO FEMALES - No Barr body.

Discussion

20607.	Question : Bartholin's glands are situated :-
Answer» On the sides of the head of some amphibians At the REDUCED TAIL end of birds On either side of VAGINA in humans On either side of VAS DEFERENS in humans Answer :C

Discussion

20608.	Question : Bartholin's glands are situated
Answer» at the reduced TAIL end of birds on either side of VAGINA in humans on either side of VAS deferens in humans on the SIDES of the hcad of some amphibians Answer :B

Discussion

20609.	Question : Bartholin glands are situated :
Answer» on EITHER side of vagina- in human on either side of VAS DEFERENS in human on the sides of HEADS of some amphibians at the reduced tail ends of birds. Answer :A

Discussion

20610.	Question : Barr bodyrepersents :
Answer» HETEROCHROMATIN in male and female CELLS All heterochromatin in female cells One of the two X-chromosomes in SOMATIC cells of female Y-chromosome in somatic cells Answer :C

Discussion

20611.	Question : Barr body present in karyotype of Turner syndrome female, normal female,Down syndrome female. Respectively?
Answer» 0,1 0,1,2 1,0,1 1,1,0 ANSWER :A

Discussion

20612.	Question : Barr body is formed by conversion of euchromatic regions of one X-chromosome into
Answer» CONSTITUTIVE heterochromatin Facultative heterochromatin Nascent heterochromatin All the above. Solution :N//A

Discussion

20613.	Question : barr body is present in
Answer» Sperm ovum Somatic CELL of female Somatic cell of female Answer :C

Discussion

20614.	Question : Barr body is absent in normal human female in
Answer» SKIN cells Leucocytes Oogonia Secretory cells. Solution :N//A

Discussion

20615.	Question : Barnacles growing on the back of whale is an example for :
Answer» protocoorporation commensalism competition predation Answer :B

Discussion

20616.	Question : Barnacles growing on the back of whale is an example for
Answer» MUTUALISM Commensalism PARASITISM AMENSALISM ANSWER :B

Discussion

20617.	Question : Barnacles growing on the back of the whale exemplify
Answer» PARASITISM MUTUALISM Commensalism Amensalism Answer :C

Discussion

20618.	Question : Barbora Mc Clintock is famous for her work on (discovery of transposons)
Answer» rice wheat maize sugarcane ANSWER :C

Discussion

20619.	Question : Banna is vegetatively propagated by
Answer» TUBERS rhizomes bulbs suckers Answer :B

Discussion

20620.	Question : Banding techniques used in case of plant chromosomes are
Answer» G and R C and G C and N Q and R Answer :C

Discussion

20621.	Question : Banana is propagated by
Answer» TUBERS Rhizomes BULBS SUCKERS Answer :B

Discussion

20622.	Question : Banana is multiplied by means of :
Answer» SEEDS LEAF MARGINS RHIZOME Offsets Answer :C

Discussion

20623.	Question : Banana is multiplied through
Answer» suckers seeds rhizome stolen Answer :C

Discussion

20624.	Question : Banana is a parthenocarpic fruit where oranges show polyembryony. How are they different from each other with respect to seeds?
Answer» Solution : Banana develops from an ovary without FERTILISATION having non-viable seeds so it is CALLED parthenocarpic fruit. An orange contain seeds with more than one EMBRYO thus, it SHOWS POLYEMBRYONY

Discussion

20625.	Question : Banana is a true fruit and also a parthenocarpic fruit. Justify.
Answer» Solution :SINCE banana FRUIT is formed from OVARY it is true fruit. It is PARTHENOCARPIC because the ovary develops into the fruit without fertilization

Discussion

20626.	Question : Blue stretches were formed by flower once in
Answer» 15 years 12 years 20 years 48 years Answer :B

Discussion

20627.	Question : Banana fruit are seedless because they:
Answer» are triploid have PLENTY of auxins reproduce ASEXUALLY NONE of these Solution :N//A

Discussion

20628.	Question : Baliani discovered a special type of chromosomes type chromosomes from salivary gland of chironomus larvae which are recognizd by the presence of :
Answer» LOOPS bands Both of these NONE of these Answer :B

Discussion

20629.	Question : Bali, Javan and Caspian are the three:
Answer» SPECIES of tiger species of Cheetah Species of lion Subspecies of tiger Answer :D

Discussion

20630.	Question : Balenophobia is the fear of
Answer» DUST DEPTH Needles Dopamine SOLUTION :N//A

Discussion

20631.	Question : Balanoglouses is link between.
Answer» ANNELIDA and Arthopoda FISHES and AMPHIBIAN reptiles and Aves Invertebrates and chordates Solution :Invertebrates and chordates

Discussion

20632.	Question : Balanus differs from Lepus in being
Answer» Sessile Stalked Absence of CEMENT glands Absence of mantle. Answer :A

Discussion

20633.	Question : Balbiani rings are sites of
Answer» RNA and PROTEIN SYNTHESIS Lipid synthesis Nucleotide synthesis Polysaccharide synthesis ANSWER :A

Discussion

20634.	Question : Balanoglossus is commonly known as
Answer» SAND WORM Acom worm BLOOD worm Rag worm Answer :B

Discussion

20635.	Question : Balancing selection is connected with the successful reproduction of
Answer» HOMOZYGOUS resessive homozygous dominants HETEROZYGOUS individuals All of above ANSWER :C

Discussion

20636.	Question : Balancing selection is connected with the successful reproduction of:
Answer» HOMOZYGOUS recessives Homozygous dominants Heterozygous individuals All of the above Answer :C

Discussion

20637.	Question : Baker's yeast is used in the prepation of edible product:
Answer» Curd Bread Idli Fermented FISH ANSWER :B

Discussion

20638.	Question : Baker's yeast is known as
Answer» TRICHODERMA polysporum Saccharomyces cerevisiae Acetobacter aceti clostridium butylicum Answer :B

Discussion

20639.	Question : Baker's yeast is
Answer» S. cerevisiae S. ludwigii S. octosporus Schizosaccharomyces ANSWER :A

Discussion

20640.	Question :Bakers yeast is
Answer» SACCHAROMYCES CEREVISIAE Aspergillus Rhizopus Zamia pygmaea Solution :Saccharomyces cerevisiae

Discussion

20641.	Question : Bacterium, which reduces nitrates in soil to nitrogen is
Answer» NITROSOMONAS, Clostridium Pseudomonas, Nitrobacter Clostridium Rhizobium Answer :B

Discussion

20642.	Question : Bacterium Pseudomonas is useful as it can
Answer» Transfer gene from one plant to ANOTHER plant Fix atmospheric NITROGEN Decompose a variety of ORGANIC compounds Produce several antibiotics Answer :C

Discussion

20643.	Question : Bacterium Propionibacterium shermanit is used in the preparation of edible product:
Answer» CURD SWISS CHEESE IDLI ROQUEFORT cheese Solution :Curd

Discussion

20644.	Question : Bacteriophages are viruses that eat away bacteria. They usually have
Answer» dsDNA dsRNA ssDNA ssRNA Answer :A

Discussion

20645.	Question : Bacterical enospores are perennating structures which can tolerate extremes of high temperature due to the presence of :
Answer» cellulosic THICK cell wall tight cross-linking of amino SUGARS `CA^(+2)` and dipicolinic acid teichoic acid Answer :C

Discussion

20646.	Question : Bacterial viruses usually have
Answer» POLLO virus Tobacoo MOSAIC virus Measles virus retrovirus Answer :B

Discussion

20647.	Question : Bacterial transduction is phage mediated genetic transfer and was discovered in salmonella by
Answer» ZINDER and Lederberg Tatum and Lederberg Beadle and Tatum Avery, MACLEOD and Mccarty Answer :A

Discussion

20648.	Question : Bacterial resistance to antibiotics is a generic trait carried in the bacterial
Answer» INTRON CHROMOSOME Plasmid CENTROMERE Answer :C

Discussion

20649.	Question : Bacterial endospores are highly resistent, due to:-
Answer» Chitin Rigid CELL wall Ca-dipicolinate Sporopollenin Answer :C

Discussion

20650.	Question : Bacterial artificial chromosomes (BACs), cosmids, phages, plasmids and yeast artifical chromosomes (YACs) are all commonly used cloning vectors that differ in their cloning capacities, with a range from approximately 100 bp to 1000 kb. Which of the following is the correct order for these vectors in terms of increasing cloning capacity ?
Answer» BAC,cosmid,phage,plasmid,YAC YAC,BAC,cosmid,phage,plasmid Plasmid,phage,cosmid,BAC,YAC Plasmid,cosmid,phage,BAC,YAC Solution :Plasmid-generally UPTO 15 Kb long DNA fragment Phage-up 23 Kb long DNA FRAGMENTS Cosmid-uptp 45 Kb long DNA fragments BAC-upto 300-350 Kb long DNA fragments YAC-upto 1 MB long DNA fragments

Discussion

Explore topic-wise InterviewSolutions in .

Question : Based on the nature of habitat, succession is of

Question : Based on the material used, how will you classify the culture technology?

Question : Explain Raunkiaer classification in the world's vegetation based on the temperature.

Question : Based on cellular mechanisms there are two major types of regeneration found in the animals. Which one of the following is the correct example of the type mentioned ?

Question : Based on of the effect of translation, classify mutations.

Question : Based on Lyon's hypothesis, mention the number of Barr bodies in XXY males, XO females.

Question : Bartholin's glands are situated :-

Question : Bartholin's glands are situated

Question : Bartholin glands are situated :

Question : Barr bodyrepersents :

Question : Barr body present in karyotype of Turner syndrome female, normal female,Down syndrome female. Respectively?

Question : Barr body is formed by conversion of euchromatic regions of one X-chromosome into

Question : barr body is present in

Question : Barr body is absent in normal human female in

Question : Barnacles growing on the back of whale is an example for :

Question : Barnacles growing on the back of whale is an example for

Question : Barnacles growing on the back of the whale exemplify

Question : Barbora Mc Clintock is famous for her work on (discovery of transposons)

Question : Banna is vegetatively propagated by

Question : Banding techniques used in case of plant chromosomes are

Question : Banana is propagated by

Question : Banana is multiplied by means of :

Question : Banana is multiplied through

Question : Banana is a parthenocarpic fruit where oranges show polyembryony. How are they different from each other with respect to seeds?

Question : Banana is a true fruit and also a parthenocarpic fruit. Justify.

Question : Blue stretches were formed by flower once in

Question : Banana fruit are seedless because they:

Question : Baliani discovered a special type of chromosomes type chromosomes from salivary gland of chironomus larvae which are recognizd by the presence of :

Question : Bali, Javan and Caspian are the three:

Question : Balenophobia is the fear of

Question : Balanoglouses is link between.

Question : Balanus differs from Lepus in being

Question : Balbiani rings are sites of

Question : Balanoglossus is commonly known as

Question : Balancing selection is connected with the successful reproduction of

Question : Balancing selection is connected with the successful reproduction of:

Question : Baker's yeast is used in the prepation of edible product:

Question : Baker's yeast is known as

Question : Baker's yeast is

Question :Bakers yeast is

Question : Bacterium, which reduces nitrates in soil to nitrogen is

Question : Bacterium Pseudomonas is useful as it can

Question : Bacterium Propionibacterium shermanit is used in the preparation of edible product:

Question : Bacteriophages are viruses that eat away bacteria. They usually have

Question : Bacterical enospores are perennating structures which can tolerate extremes of high temperature due to the presence of :

Question : Bacterial viruses usually have

Question : Bacterial transduction is phage mediated genetic transfer and was discovered in salmonella by

Question : Bacterial resistance to antibiotics is a generic trait carried in the bacterial

Question : Bacterial endospores are highly resistent, due to:-