24277 + Interview Questions in Biology in Class 12 Page 214 InterviewSolution

10651.	Question : Peculiarities of two types of seeds are given below. Identify the two types of seeds and give example for each. Endosperm completely used by embryo.
Answer» SOLUTION :NON - albuminous/ EX- albuminous Eg : PEA, Groundnut etc.

Discussion

10652.	Question : Peculiarities of certain parts of theovule are given below. Name the parts. The layer of cells within the integuments.
Answer» SOLUTION :NUCELLUS

Discussion

10653.	Question : pectinase is extracted from
Answer» Azadirachta INDICA POA indica Helianthus annus Aspergillus niger Answer :D

Discussion

10654.	Question : Pectin is
Answer» WASTE PRODUCT EXCRETORY product Phytolectin SECRETORY product. Solution :N//A

Discussion

10655.	Question : Pecten, a comb like structure occurs in the eye of
Answer» FISHES Birds Mammals FROG. ANSWER :B

Discussion

10656.	Question : Pear shaped gametes with two laterally attached flagella are formed in
Answer» Polysiphonia Ulothrix Fucus Spirogyra Answer :C

Discussion

10657.	Question : Pearl is formed when a foreign substance gets trapped between A of B
Answer» A- SHELL and mantle B - Pila A- NACREOUS and prismatic layerB-Pinctada A - Shell and mantleB Pinctada A- Nacreous and prismatic LAYER B- Ostrea Answer :C

Discussion

10658.	Question : Pear shaped structure formed by oviducts in leech.
Answer» SOLUTION :VAGINA .

Discussion

10659.	Question : Peak secretion of estrogen occurs :
Answer» Just before ovulation Mid LUTEAL phase At the TIME of ovulation Secretion at the same RATE during all PHASES of MENSTRUAL cycle Answer :A

Discussion

10660.	Question : Pea seeds absorb more water and swell up more ascompared to Paddy seeds due to
Answer» HIGHER imbibition by proteins present inPea SEEDS HIGH osmotic potential of Pea seeds Paddy covering is impermeable to water All the above Answer :A

Discussion

10661.	Question : Pea root Rhizobium bacteria shows
Answer» Symbiosis Commensalism Predation Parasitism ANSWER :A

Discussion

10662.	Question : PCR was developed by ____________
Answer» EVA Engvall PETER Perlmanin KARY Mullis WILMUT SOLUTION : Kary Mullis

Discussion

10663.	Question : PCR and Restriction Fragment Length Polymorphism are the methods for
Answer» Study of enzymes GENETIC TRANSFORMATION DNA sequencing Genetic FINGERPRINTING SOLUTION :Genetic Fingerprinting

Discussion

10664.	Question : PCR proceeds in three distinct steps governed by temperature, they are in order of .....
Answer» DENATURATION, ANNEALING. SYNTHESIS Synthesis, Annealing. Denaturation Annealing. Synthesis. Denaturation Denaturation. Synthesis, Annealing SOLUTION : Denaturation, Annealing. Synthesis

Discussion

10665.	Question : PCR is used to amplify desired DNA for a billion times. It is also used in the molecular diagnosis of human disorders. Explain.
Answer» Solution :PCR is routinely used to detect HIV in SUSPECTED AIDS PATIENTS. It is used to detect mutations in genes in suspected CANCER patients. It is a powerful technique to identify many other genetic DISORDERS.

Discussion

10666.	Question : PCR is related to
Answer» DNA CLONING DNA AMPLIFICATION DNA SELECTIVE replication All of these SOLUTION :DNA amplification

Discussion

10667.	Question :PCR is a useful tool for early diagnosis of an infectious disease. Elaborate.
Answer» SOLUTION :PCR is useful in AMPLIFICATION or artificial multiplication of desired DNA, (INFECTIOUS microorganism) in early stages of infection when DNA of infectious organism is present in very small AMOUNT.

Discussion

10668.	Question : PCR and 'Restriction Fragment Length Polymorphism are the methods for :
Answer» GENETIC transformation DNA sequencing Genetic fingerprinting Study of enzymes Answer :D

Discussion

10669.	Question : PCR is a useful tool for early diagnosis of an infectious disease. Elaborate.
Answer» Solution :PCR is a very sensitive TECHNIQUE which enables the specific amplification of DESIRED DNA from a LIMITED amount of DNA template. Hence, it can detect the presence of an infectious organism in the infected PATIENT at an early stage of infection (even before the infectious organism has multiplied to large number).

Discussion

10670.	Question : PCO_2 released from body is:
Answer» 15 mm 23 mm 30 mm 70 mm Answer :C

Discussion

10671.	Question : PBR322 is most extensively studied in
Answer» Plasmid DNA of E.coli FOREIGN GENE r-DNA CLONE Solution :Plasmid DNA of E.coli

Discussion

10672.	Question : pBR322 has restriction sites for many restriction endonucleases. Which of these enzymes acting on pBR322 is not correctly matched with its source ? I. Pvul : Providencia vulgaris. II. Clal: caryophanon latum. III. Sall : Streptomyces albus IV. Pstl: Proteus stuarti
Answer» I and II II and IV I and IV II and III Answer :C

Discussion

10673.	Question : pBR322 is a/an endonuclease.
Answer» ANSWER :A::D

Discussion

10674.	Question : P^(BR322) cloning vector has the genes for resistance against
Answer» Chloramphenicol and Ampicillin Chloramphenicol and TETRACYCLINE Ampicillin and Tetracycline Steptomycin and PENICILLIN Answer :C

Discussion

10675.	Question : pBR 322, BR stands for
Answer» PLASMID Bacterial RECOMBINATION Plasmid Bacterial REPLICATION Plasmid BOLIVER and Rodriguez Plasmid BALTIMORE Rodriguez Answer :C

Discussion

10676.	Question : Pattern of inheritance in which both alleles are expressed…….
Answer» SOLUTION :co-dominance

Discussion

10677.	Question : Pavlov demonstrated conditioned reflex in cats.
Answer» True False Answer :PAVLOV DEMONSTRATED CONDITIONED REFLEX in DOGS.

Discussion

10678.	Question : Pattern baldness ., moustaches and beard fin himan males are examples of
Answer» Sex linked TRAITS Sexdiffeentiating traits sex LIMITED traits sex detmining traits SOLUTION :Pattern boldenss is sex influenced TRAIT while the other two are sex limited traits. All the three however are sex differenting traits.

Discussion

10679.	Question : Paul Ehrlich by his ' Rivet - popper hypothesis tried to explain :
Answer» The EFFECT of REDUCTION in biodiversity Most of the SPECIES have some ROLE to play in the ecosystem Biodiversity is not meaningless More than one OPTION is correct Answer :D

Discussion

10680.	Question : Pathophysiology is the:
Answer» STUDY of physiology of pathogen study of NORMAL physiology of host study of ALTERED physiology of host None of the above Answer :C

Discussion

10681.	Question : Pathophysiology is the
Answer» study of physiology of pathogen study of normal physiology of host study of ALTERED physiology of host none of these Solution :Pathoohysiology means the functional CHANGES assoiciated with or resulting from a disease or INJURY or the functional changes associated with a disease or SYNDROME.

Discussion

10682.	Question : Pathophysiology is the(A) Study of physiology of pathogen(B) Study of normal physiology of host(C) Study of altered physiology of host(D) None of the above
Answer» Study of physiology of pathogen Study of normal physiology of host Study of ALTERED physiology of host None of the above Solution :PATHOPHYSIOLOGY is the study of altered physiology of host. eg. INGESTING a toxin may result into different types of physical CHANGES as inflammation in the stomach lining.

Discussion

10683.	Question : Pathogen of malaria is :
Answer» Plasmodium Leishmania Trichomonas Trypanosoma Answer :A

Discussion

10684.	Question : Paternity and maternity can be determined by certain scientific methods. What it is ? Define.
Answer» Solution :DNA fingure printing: it is a bybridisation technique USED to FIND out variations in individuals of a population at DNA LEVEL- To identify the similarities of DNA MOLECULES of TWO individuals.

Discussion

10685.	Question : Patau's syndrome is also referred to as ......
Answer» 13-Trisomy 18-Trisormy 21-Trisormy None of these Answer :A

Discussion

10686.	Question : Pasteur's experiments and similar ones that followed convinced most people, that spontaneous generation of life did not happen because
Answer» PASTEUR did not happen because Pasteur's swan-neeked flasks ruled out the objection that SPOILED air COULD have contaminated his experiments Pasteur was extremely meticulous Pasteur used very fine mesh SCREENS to COVER his flasks Answer :B

Discussion

10687.	Question : Pasteurised milk is
Answer» Citricacid LACTICACID ACETIC ACID All of the above ANSWER :D

Discussion

10688.	Question : Pasteur and Koch are related to
Answer» DISCOVERY of NUCLEIC ACIDS(DNA and RNA) discovery of ultracentrifuge germ theory of disease gene splicing Answer :C

Discussion

10689.	Question : Passive ventricular filling occurs
Answer» during JOINT diastole only during ATRIAL systole throughout atrial diastole throughout VENTRICULAR diastole. Answer :A

Discussion

10690.	Question : Passive immunity was discovered by :
Answer» ROBERT Koch L. Pasteur Edward JENNER EMIL VON Behring Answer :D

Discussion

10691.	Question : Passive absorption of water from the soil by the root is mainly effected by :
Answer» Typical tissue organisation Respiratory ACTIVITY of ROOT Tension on CELL SAP DUE to transpiration None of the above Answer :C

Discussion

10692.	Question : Passive immunity can be obtained by injecting:
Answer» Antibodies Antigens Antibiotics Vaccination Answer :A

Discussion

10693.	Question : What is Passive immunity ?
Answer» It COMES in heredity from the parents. It is obtained vaccination. It is obtained while RESPONDING the disease first time. It is obtained by DIRECT ENTRY of antibodies in the BODY. Solution :It is obtained by direct entry of antibodies in the body.

Discussion

10694.	Question : Passive immunity and Active immunity
Answer» SOLUTION :

Discussion

10695.	Question : Passive absorption of water by the root system is the result of:
Answer» Force created in the cells of the root Increased respiratory activity in the root Tension on the CELL SAP DUE to transpiration Osmotic force in the SHOOT system Answer :C

Discussion

10696.	Question : Passive absorption of minerals depend on
Answer» temperature temperature and METABOLIC inhibitor metabolic inhibitor humidity Solution :Metabolic inhibitors AFFECT active absorptioin. Humidity does not affect ABSORPTION of minerals as much as temperature. The MOVEMENT of MINERAL ions into the root cells by the process of simple diffusion is called as passive absorption. This is spontaneous process and does not required energy.

Discussion

10697.	Question : In ......, pollen tube enters through micropyle into the ovule.
Answer» Mesogamy Porogamy Dicliny Dichogamy Answer :B

Discussion

10698.	Question : passage cells occur in
Answer» MONOCOT root dicot root monocot stem aerialroot Answer :a

Discussion

10699.	Question : Passage cells are thin-walled cells found in :
Answer» Phloem ELEMENTS that serve as eritry points ,for substance for transport to other plant parts Testa of seeds to enaqle emergence of GROWING embryonic AXIS during seed geffilination Central region of style through which the pollen tube glows towards the ovary Endodermis of roots facilitaling rapid TRANPORT of water from cortex to pericycle Answer :D

Discussion

10700.	Question : Pashmina wool is obtained from a variety of
Answer» sheep goat RIBBIT YAK ANSWER :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : Peculiarities of two types of seeds are given below. Identify the two types of seeds and give example for each. Endosperm completely used by embryo.

Question : Peculiarities of certain parts of theovule are given below. Name the parts. The layer of cells within the integuments.

Question : pectinase is extracted from

Question : Pectin is

Question : Pecten, a comb like structure occurs in the eye of

Question : Pear shaped gametes with two laterally attached flagella are formed in

Question : Pearl is formed when a foreign substance gets trapped between A of B

Question : Pear shaped structure formed by oviducts in leech.

Question : Peak secretion of estrogen occurs :

Question : Pea seeds absorb more water and swell up more ascompared to Paddy seeds due to

Question : Pea root Rhizobium bacteria shows

Question : PCR was developed by ____________

Question : PCR and Restriction Fragment Length Polymorphism are the methods for

Question : PCR proceeds in three distinct steps governed by temperature, they are in order of .....

Question : PCR is used to amplify desired DNA for a billion times. It is also used in the molecular diagnosis of human disorders. Explain.

Question : PCR is related to

Question :PCR is a useful tool for early diagnosis of an infectious disease. Elaborate.

Question : PCR and 'Restriction Fragment Length Polymorphism are the methods for :

Question : PCR is a useful tool for early diagnosis of an infectious disease. Elaborate.

Question : PCO_2 released from body is:

Question : PBR322 is most extensively studied in

Question : pBR322 has restriction sites for many restriction endonucleases. Which of these enzymes acting on pBR322 is not correctly matched with its source ? I. Pvul : Providencia vulgaris. II. Clal: caryophanon latum. III. Sall : Streptomyces albus IV. Pstl: Proteus stuarti

Question : pBR322 is a/an endonuclease.

Question : P^(BR322) cloning vector has the genes for resistance against

Question : pBR 322, BR stands for

Question : Pattern of inheritance in which both alleles are expressed…….

Question : Pavlov demonstrated conditioned reflex in cats.

Question : Pattern baldness ., moustaches and beard fin himan males are examples of

Question : Paul Ehrlich by his ' Rivet - popper hypothesis tried to explain :

Question : Pathophysiology is the:

Question : Pathophysiology is the

Question : Pathophysiology is the(A) Study of physiology of pathogen(B) Study of normal physiology of host(C) Study of altered physiology of host(D) None of the above

Question : Pathogen of malaria is :

Question : Paternity and maternity can be determined by certain scientific methods. What it is ? Define.

Question : Patau's syndrome is also referred to as ......

Question : Pasteur's experiments and similar ones that followed convinced most people, that spontaneous generation of life did not happen because

Question : Pasteurised milk is

Question : Pasteur and Koch are related to

Question : Passive ventricular filling occurs

Question : Passive immunity was discovered by :

Question : Passive absorption of water from the soil by the root is mainly effected by :

Question : Passive immunity can be obtained by injecting:

Question : What is Passive immunity ?

Question : Passive immunity and Active immunity

Question : Passive absorption of water by the root system is the result of:

Question : Passive absorption of minerals depend on

Question : In ......, pollen tube enters through micropyle into the ovule.

Question : passage cells occur in

Question : Passage cells are thin-walled cells found in :

Question : Pashmina wool is obtained from a variety of