24277 + Interview Questions in Biology in Class 12 Page 154 InterviewSolution

7651.	Question : Strategy used to prevent ņematode infection of tobacco roots is(A) Use of agrochemicals(B) Bt toxin gene(C) Gene mutation(D) RNA interference
Answer» Use of agrochemicals BT toxin gene Gene MUTATION RNA INTERFERENCE Solution :RNA interference

Discussion

7652.	Question : Straight ovules are called ___________
Answer» ANATROPOUS CAMPYLOTROPOUS ORTHOTROPOUS Hernitropous Answer :C

Discussion

7653.	Question : Stored food of Red algae is :-
Answer» Floridean starch Glycogen Cyanophycean starch Leucosin Answer :A

Discussion

7654.	Question : Stored food in Polysiphonia is structurally very similar to
Answer» STARCH and amylose Amylopectin and glycogen Amylose and glycogen Mannitol and amylopectin Answer :B

Discussion

7655.	Question : STOP signals are seen on …………………….
Answer» NONE of the GIVEN t - RNA m-RNA r-RNA SOLUTION :m-RNA

Discussion

7656.	Question : Stones produced from uric acid in people with metabolic disorders are ………… .
Answer» cystine struvite oxalate phosphate Answer :A

Discussion

7657.	Question : Stool of a person is whitish grey coloured due to malfunction of which of the following organ?
Answer» Pancreas Spleen Kidney Liver ANSWER :D

Discussion

7658.	Question : Stony endocarp is a feature of
Answer» Pepo Drupe Pome Berry Answer :B

Discussion

7659.	Question : Stomochord is a rudimentary structure present in the collar region. It is found in
Answer» CHORDATES cephalochodates UROCHORDATES hemichordates Answer :D

Discussion

7660.	Question : Stomatal opening or closing is due to:
Answer» Change in the TURGIDITY of guard CELLS The inner WALLS each guard cell is thick and elastic Cellulose MICROFIBRILS of guard cells are oriented radially All of the above Answer :D

Discussion

7661.	Question : Stomatal distribution is observed only on the upper surface of the leaf in
Answer» SUBMERGED hydrophytes Floating hydrophytes Emergent hydrophytes All the above Answer :B

Discussion

7662.	Question : Stomatal distribution is observed only on the lower ‘surface of the leaf in
Answer» Xerophytes Hydrophytes Mesophytes Lithophytes Answer :A

Discussion

7663.	Question : Stomata, trichomes and root hairs are included in :-
Answer» EPIDERMAL TISSUE system Ground tissue system Ground tissue system Fundamental tissue system Answer :A

Discussion

7664.	Question : Stomata open by
Answer» Increasing solution concentration in guard cells Weakening of cell wallsof guard cell to ALLOW them to stretch Increasing WATER potential of guard cells DECREASING the solute concentration of guard cells ANSWER :A

Discussion

7665.	Question : Stomata open at night in:
Answer» HYDROPHYTES succulents Mesophytes Halophytes Answer :B

Discussion

7666.	Question : Stomata belong to_____ tissue system
Answer» ANSWER :EPIDERMAL

Discussion

7667.	Question : stomata are sunken i.e, guard cells with subsidiary cells in
Answer» MESOPHYTES XEROPHYTES HYDROPHYTES hydrophytes ANSWER :B

Discussion

7668.	Question : Stomach is the chief site for____digestion.
Answer» ANSWER :PROTEIN

Discussion

7669.	Question : Stolons and runers are quirte similar to each otherThe only difference between them is
Answer» stolons GROW below the surface of SOIL while runner grow above the surface of soil stolons possess nodes while runnner lack them stolons show tendri l modification ALSO while runner lack them stolons grow above the GROUND and runners grow BELWO ground Answer :A

Discussion

7670.	Question : Stomach is a common passage for air and food.
Answer» ANSWER :PHARYNX

Discussion

7671.	Question :STIS
Answer» SOLUTION : SEXUALLY TRANSMITTED INFECTIONS

Discussion

7672.	Question : Stirred-tank bioreactors have been designed for
Answer» purification of PRODUCT addition of preservatives to the product availability of oxygen throughout the PROCESS ENSURING anaerobic conditions in the culture SOLUTION :availability of oxygen throughout the process

Discussion

7673.	Question : Stimulus of vernalisation is perceived by
Answer» MATURE STEM apex Embryo of the seed Leaves Both (1) and (2) ANSWER :D

Discussion

7674.	Question : Stimulus of vernalization is received in annuals and biennials by:
Answer» Flower Root SHOOT apex Leaf Answer :C

Discussion

7675.	Question : Sting of honey bee and sting of scorpion are example of
Answer» ANALOGOUS organs Over SPECIALISED organs Homologous organs Vestigial organs Answer :A

Discussion

7676.	Question : Stimulus of flow temperature in vernalisation is perceived by
Answer» Leaves Embryo of the seed Flower Pericarp Answer :B

Discussion

7677.	Question : Stimulation from sympathetic nervous system to heart causes decrease in
Answer» CARDIAC output Duration of cardiac cycle Stroke volume Heart rate Answer :D

Discussion

7678.	Question : Stimulation of a muscle fiber by a motor neuron occurs at
Answer» The NEUROMUSCULAR junction The TRANSVERSE tubules The MYOFIBRIL The sarcoplasmic RETICULUM ANSWER :A

Discussion

7679.	Question : Stimulation of a good female animal to release more eggs is called_____
Answer» ANSWER :SUPER OVULATION

Discussion

7680.	Question : Stimulant Cocaine is obtained from
Answer» THEA sinesis Papaver somniferum Erythroxylon coca Coffea ARABICA ANSWER :C

Discussion

7681.	Question : Stimulation of a good female animal to release more eggs iscalled__________________.
Answer» ANSWER :SUPEROVULATION

Discussion

7682.	Question : Stimulant cocaine is obtained from:
Answer» Rauwolfia Erythroxylon Papaver Eucalyptus Answer :B

Discussion

7683.	Question : Stilt roots in sugarcane
Answer» ARISE from horizontally PLACED AERIAL branches develops from the basal node of the stem are hygroscopic act like PILLARS and provide support to aerial branches Answer :2

Discussion

7684.	Question : Stigma is always rough and sticky in :
Answer» ENTOMOPHILOUS flowers Anemophilous flowers Hydrophilous flowers All TYPES of flowers Answer :A

Discussion

7685.	Question : Stiffening of the body after death is termed
Answer» 1, LATENT period 2. Refractory period 3. Rigor MORTIS 4. Tetanus Answer :C

Discussion

7686.	Question : Stickly glands of boerhaviea and plumbago support
Answer» anemochory ZOOCHORY AUTOCHORY HYDROCHORY Answer :B

Discussion

7687.	Question : Sticky glands of Boerhaavia and Cleome support
Answer» Anemochory ZOOCHORY Autochory Hydrochory Solution :Zoochory

Discussion

7688.	Question : Steward's theory of stomatal opening and closure assumes the presence of enzymes in guard cells:
Answer» PHOSPHORYLASE and PHOSPHATASE Hexokinase and phospho-glucomutase Phosphorylase, phospho-glucomutase, phosphatase and hexokinase Phosphorylase and phosphoglucomutase Answer :C

Discussion

7689.	Question : Steroids have a nucleus consisting of 3 cyclohexane rings and one _____ ring.
Answer» ANSWER :CYCLOPENTANE

Discussion

7690.	Question : Steroids are crystallisable lipids. Utility of Rhizopus stolonifer fungus for steroid conversion was shown by
Answer» KOHLER and Milstein Murray and Peterson Waksman Pasteur and Joubert Answer :B

Discussion

7691.	Question :Steroids are used in(A) Treatment of hormonal imbalance(B) Birth control(C) Treatment of autoimmune disease(D) All of above
Answer» Treatment of hormonal imbalance BIRTH control Treatment of autoimmune DISEASE All of above Solution :All of above

Discussion

7692.	Question : Steroids are used in :
Answer» TREATMENT of HORMONAL imbalance Birth control Treatment of AUTOIMMUNE diseases All the above Answer :D

Discussion

7693.	Question : Steroid hormones work as
Answer» They enter into target cells and binds with specific RECEPTOR and activate specific GENES to form protein they bind to cell membrane they CATALYSE formation of AMP None of the above Answer :A

Discussion

7694.	Question : Steroid hormones typically alters the activity of target cells by
Answer» ACTIVATING PRIMARY messenger activating secondary messenger interacting with INTRACELLULAR receptors None of the above Answer :C

Discussion

7695.	Question : Steroidal oral contraceptive pills are consumed by females
Answer» On the DAY of ovulation During FIRST FIVE days of menstrual cycle During follicular phase of menstrual cycle Once a week for first 4 months Answer :B

Discussion

7696.	Question : Steroid hormones is derived from:
Answer» Corticoid Cholesterol Protein None of these Answer :B

Discussion

7697.	Question : steroid hormones:
Answer» Have only cell surface receptors Are lipophobic Act THROGH altering the ACTIVITY of proteins in the target cell Are PRODUCED by the adrenal cortex Answer :C

Discussion

7698.	Question : Sternum is connected to ribs by
Answer» BONY MATTER white fibrous cartilage hyaline cartilage areolar tissue Answer :C

Discussion

7699.	Question :Sterilisation techniques are generally fool proof methods of contraception with least side effects. Yet, this is the last option for the couples because. (i) It is almost irreversible.(ii) Of the misconception that it will reduce sexual urge/drive. (iii) It is a surgical procedure. (iv) Of lack of sufficient facilities in many parts of the country . Choose the correct option:
Answer» i and iii ii and iii ii and iv i, ii, iii and iv Solution :Surgical methods or sterilization methods are generally accepted as last METHOD to prevent pregnancy by EITHER male or female partner. This method STOPS transfer of gamete and by that it stops coitus. In MALES it is called VASECTOMY while in female it is called tubectomy. This is a permanent method of sterilization done by operation / surgery.

Discussion

7700.	Question : Sterilisation of glassware and related equipment for tissue culture is brought about by using
Answer» AUTOCLAVE INCUBATOR UV light Alcohol SOLUTION :Autoclave

Discussion

Explore topic-wise InterviewSolutions in .

Question : Strategy used to prevent ņematode infection of tobacco roots is(A) Use of agrochemicals(B) Bt toxin gene(C) Gene mutation(D) RNA interference

Question : Straight ovules are called ___________

Question : Stored food of Red algae is :-

Question : Stored food in Polysiphonia is structurally very similar to

Question : STOP signals are seen on …………………….

Question : Stones produced from uric acid in people with metabolic disorders are ………… .

Question : Stool of a person is whitish grey coloured due to malfunction of which of the following organ?

Question : Stony endocarp is a feature of

Question : Stomochord is a rudimentary structure present in the collar region. It is found in

Question : Stomatal opening or closing is due to:

Question : Stomatal distribution is observed only on the upper surface of the leaf in

Question : Stomatal distribution is observed only on the lower ‘surface of the leaf in

Question : Stomata, trichomes and root hairs are included in :-

Question : Stomata open by

Question : Stomata open at night in:

Question : Stomata belong to_____ tissue system

Question : stomata are sunken i.e, guard cells with subsidiary cells in

Question : Stomach is the chief site for____digestion.

Question : Stolons and runers are quirte similar to each otherThe only difference between them is

Question : Stomach is a common passage for air and food.

Question :STIS

Question : Stirred-tank bioreactors have been designed for

Question : Stimulus of vernalisation is perceived by

Question : Stimulus of vernalization is received in annuals and biennials by:

Question : Sting of honey bee and sting of scorpion are example of

Question : Stimulus of flow temperature in vernalisation is perceived by

Question : Stimulation from sympathetic nervous system to heart causes decrease in

Question : Stimulation of a muscle fiber by a motor neuron occurs at

Question : Stimulation of a good female animal to release more eggs is called_____

Question : Stimulant Cocaine is obtained from

Question : Stimulation of a good female animal to release more eggs iscalled__________________.

Question : Stimulant cocaine is obtained from:

Question : Stilt roots in sugarcane

Question : Stigma is always rough and sticky in :

Question : Stiffening of the body after death is termed

Question : Stickly glands of boerhaviea and plumbago support

Question : Sticky glands of Boerhaavia and Cleome support

Question : Steward's theory of stomatal opening and closure assumes the presence of enzymes in guard cells:

Question : Steroids have a nucleus consisting of 3 cyclohexane rings and one _____ ring.

Question : Steroids are crystallisable lipids. Utility of Rhizopus stolonifer fungus for steroid conversion was shown by

Question :Steroids are used in(A) Treatment of hormonal imbalance(B) Birth control(C) Treatment of autoimmune disease(D) All of above

Question : Steroids are used in :

Question : Steroid hormones work as

Question : Steroid hormones typically alters the activity of target cells by

Question : Steroidal oral contraceptive pills are consumed by females

Question : Steroid hormones is derived from:

Question : steroid hormones:

Question : Sternum is connected to ribs by

Question : Sterilisation of glassware and related equipment for tissue culture is brought about by using