24277 + Interview Questions in Biology in Class 12 Page 210 InterviewSolution

10451.	Question : Pick out the correct statement from the following in relation to autosomal syndromes
Answer» Cri -du-chat syndrome is CONSIDERED as complete monosomy Edwards syndrome OCCURS only in males Affected individuals in Patau syndrome are CHARACTERISED by micropthalmia Chronic myelogenous LEUKEMIA is due to trisomy Answer :C

Discussion

10452.	Question : Pick out the co - mutagen from the following :
Answer» Eosin MUSTARD gas ASCORBIC acid NITROUS acid ANSWER :C

Discussion

10453.	Question : Pick out the ancestral line of Cycads from the list given below-Ferns, herbaceous lycopods, seed ferns, and horsetails
Answer» SOLUTION :SEED FERNS

Discussion

10454.	Question : Pick out carcinogens from: Asbestos, Infrared rays, Arsenic, Polythene, Casein, Caffein, Tobacco smoke, Gamma rays.
Answer» Solution :CARCINOGENS: ASBESTOS, ARSENIC, Tobacco smoke, Gamma RAYS.

Discussion

10455.	Question : Pick out odd one giving reasons.
Answer» BRAIN of cat and man Wings of butterfly and bird Flippers of PENGUIN and dolphin Eyes of octopus and mammal Solution :Brain of cat and man.It is an EXAMPLE of HOMOLOGOUS organs.Where as all others are example of analogous organs.

Discussion

10456.	Question : pi is more when
Answer» SOLVENT molecules are more Solute molecules are LESS Water potential is less negative All the above Answer :D

Discussion

10457.	Question : Phytoplanktons are:
Answer» HETEROTROPHS AUTOTROPHS saprotrophs all of these Answer :B

Discussion

10458.	Question : Phytoplanktons of a pond ecosystem act as :
Answer» Producers Primary consumers Decomposers Secondary consumers Answer :A

Discussion

10459.	Question : Phytoplanktons are dominant in which of the following zone?
Answer» LIMNETIC ZONE Profound zone Littoral zone BENTHIC zone Answer :A

Discussion

10460.	Question : Phytoplanktons are :
Answer» Heterotrophs Autotrophs Saprotrophs All of these Answer :B

Discussion

10461.	Question : Phytoplankton are dominant in
Answer» LIMNETIC ZONE Profundal zone LITTORAL zone BENTHIC zone SOLUTION :Littoral zone

Discussion

10462.	Question : Phytohormone that helps seeds to withstand desiccation and other unfavourable conditions is
Answer» Ethylene Auxin Gibberellin ABA Answer :D

Discussion

10463.	Question : Phytochrome is responsible for mediating violet and ultraviolet light effects in plants
Answer» ANSWER :RED and FAR red

Discussion

10464.	Question : Phyto planktons are found in which of the following zones ?
Answer» LIMNETIC ZONE Profundal zone LITTORAL APHOTIC zone SOLUTION :Littoral

Discussion

10465.	Question : Phytochrome is
Answer» PROTEIN PIGMENT light sensitivemovement Hormone INDUCED process ANSWER :A

Discussion

10466.	Question : Physiological ecology tries to understand :-
Answer» How different type of organisms interact among themselves. How different type of ecosystems interact with local abiotic factors How different organisms are adapted to environments in forms of not only SURVIVAL but also reproduction How different type of abiotic factors interact among themselves and ONE FACTOR remains limiting Answer :C

Discussion

10467.	Question : Physiological devices of birth control.
Answer» Solution :(1)Physiological devices are in the from of oral contraceptive pills or birth control pills.They are hormonal preparations and check ovulation by inhibiting the secrection of follicle stimulating hormone and luteinizing hormone.(2)Woman who is using pills does not RELEASE ovum at the TIME of ovulation and therefore conception does not occur.(3)Birth control pill have side effects such as nausea,breast tenderness,weight gain and break through'bleeding,i.e.slight bleeding between the menstrual periods.(4)Though it is commonly used birth control method in india,it can cause lots of health hazards for WOMEN due to synthetic hormones.(5)The birth control pills contain progesterone and estogen.mala-D to be TAKEN daily and saheli to be taken weekly are two common birth control pills in india.

Discussion

10468.	Question : Physiological demonstration of osmosis is carried out by
Answer» Potometer Bell JAR experiment Thistle funnel WHOSE MOUTH is tied with egg MEMBRANE Thistle funnel whose mouth is tied with paper . Answer :C

Discussion

10469.	Question : Physiological bamiers of innate immunity includes
Answer» Skin Saliva in mouth PMNL cell Interferons Answer :B

Discussion

10470.	Question : Physical barrier method and Chemical barrier method
Answer» SOLUTION :

Discussion

10471.	Question : Phylogeny refers to :-
Answer» NATURAL CLASSIFICATION EVOLUTIONARY classification Evolutionary history Origin of algae Answer :D

Discussion

10472.	Question : Phylogeny is
Answer» Evolutionary history LIFE history Group of PHYLA Genetics of ANIMALS Answer :A

Discussion

10473.	Question : Phylogenetic system of classification includes
Answer» evolutionary trends only genetic trends only evolutionary TREND as WELL as morphology BEHAVIOURAL trends in ENVIRONMENT Answer :A

Discussion

10474.	Question : Phylloclade modification of aerial stem, which is found in :-
Answer» Onion Ginger Opuntia Sugarcane Answer :C

Discussion

10475.	Question : Phylloclade is a modification of :
Answer» Root Stem Leaf Phyllode Answer :B

Discussion

10476.	Question : Phycobilins absorb light of wavelength
Answer» 670-700 nm 610-650 nm 500-650 nm 420-520 nm Answer :C

Discussion

10477.	Question : Pyramid of biomass generally upright. But pyramid of biomass in sea is generally inverted. Why?
Answer» SOLUTION : Because the BIOMASS of fishes (secondary consumers) FAR exceeds that of hytoplankton (producers). That means producers in the sea are LESS when COMPARED with the biomass of consumers.

Discussion

10478.	Question :How Phototropic seeds germinate on exposure to light.
Answer» ANSWER :Photoblastic

Discussion

10479.	Question : Phychotropic drungs induce sleep.
Answer» True False Answer :SEDATIVE HYPNOTICS

Discussion

10480.	Question : Phototropic and geotropic movements are linked to:
Answer» Gibberellins Auxins Enzymes Cytokinin Answer :B

Discussion

10481.	Question : Photosynthetically Active Radiation ranges between the wavelength of….............. .
Answer» a) 400-600 nm b) 600-700 nm c) 400-500 nm d) 400-700 nm Answer :D

Discussion

10482.	Question : Photosynthetically active radiation (PAR) represents which of the following range of wavelength ?
Answer» 500-600nm 450-950nm 340-450 nm 400-700nm Answer :D

Discussion

10483.	Question : Photosynthetic photosystem is consist of :
Answer» REACTION CENTRE only LHC only Both LHC & reaction centre LHC, reaction centre and ETC Answer :C

Discussion

10484.	Question : Photosynthetic pigments present in Euglenoids are :-
Answer» Chlorophyll-a & Chlorophyll-b Chlorophyll-a & Chlorophyll-c Chlorophyll-a & Chlorophyll-d Chlorophyll-b & Chlorophyll-d Answer :A

Discussion

10485.	Question : Photosynthetic lamellae are seen suspended in peripheral cytoplasm in cells of
Answer» Chlorella Nitrosomonas NOSTOC and ANABAENA `C_(4)` plants Answer :C

Discussion

10486.	Question : Photosynthetic bacteria have
Answer» PIGMENT system - I pigment system - II Both (1) & (2) Some other KIND of pigment , `P_(890)` Answer :A

Discussion

10487.	Question :Photosynthetic Active Radiation (PAR) has the following range of wavelengths:
Answer» 400-700nm 450-950nm 340-450 nm 500 -600 nm Answer :A

Discussion

10488.	Question : Photosynthesis is maximum in:
Answer» Green LIGHT BLUE followed by red light (b)Red followed-by blue light Blue light Answer :C

Discussion

10489.	Question : Photosynthesis is a process by which green plants trap_____ energy and convert it into _____ energy of carbohydrates
Answer» ANSWER :SOLAR,CHEMICAL

Discussion

10490.	Question : Photosynthesis is a process by which
Answer» ATP is generated NADH IS REDUCED to NAD oxidative PHOSPHORYLATION OCCURS `CO_2` is reduced Answer :D

Discussion

10491.	Question : Photosynthesis is
Answer» PHYSICO biochemical process ANABOLIC process Endergonic reaction all the above ANSWER :D

Discussion

10492.	Question :Photosynthesis cannot continue for long if during light reaction, only cyclic photophosphorylation takes place. This is because:
Answer» Only ATP is FORMED NADP`H_+`+` H_+` IS not formed Photosystem-I stops etting excited at a wavelength of light beyond 680 nm There is unidirectional.cyclic MOVEMENT of the electrons There is no evolution of `O_2` ANSWER :A

Discussion

10493.	Question : Photosynthesis cannot continue for long if during light reaction . Only cyclic Photophosphorylation takes place. This is because
Answer» Only ATP is formed`NADPH^(+)+H^(+)`is not formed Photosystem I-stops getting excited at a wavelength of light beyond 680 nm There is unidirectional CYCLIC movement of the electrons There is no EVOLUTION of oxygen Answer :A

Discussion

10494.	Question : Photosynthesis
Answer» Affected by the simultaneous INTERACTION of several factors Its RATE determined by the factor available at optimum level INFLUENCED more by the theexternal factor than internal factors At one particular TIME more than one factors functions as limiting factor ANSWER :A

Discussion

10495.	Question : Photosensitive compound in human eye is made up of
Answer» GUANOSINE and RETINAL Opsin and Retinal Opsin and Retinol TRANSDUCIN and Retinene Answer :B

Discussion

10496.	Question : Photorespiration is favoured by:
Answer» Low LIGHT INTENSITY Low temperature HIGH `O_2` and low `CO_2` Low `o_2` and high `CO_2` Answer :C

Discussion

10497.	Question :Photorespiration is characteristic of:
Answer» `C_4` PLANTS `C_3` Plants CAM plants All of these Answer :B

Discussion

10498.	Question : Photorespiration shows formation of:
Answer» SUGAR but not ATP ATP but not sugar Both ATP and sugar Neither ATP nor sugar Answer :D

Discussion

10499.	Question : Photorespiration is also known as Embden Meyerhop pathway.
Answer» ANSWER :GLYCOLYSIS

Discussion

10500.	Question : Photorespiration in low light intensity light in C _3 plants is
Answer» high negligible MODERATE very high Answer :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : Pick out the correct statement from the following in relation to autosomal syndromes

Question : Pick out the co - mutagen from the following :

Question : Pick out the ancestral line of Cycads from the list given below-Ferns, herbaceous lycopods, seed ferns, and horsetails

Question : Pick out carcinogens from: Asbestos, Infrared rays, Arsenic, Polythene, Casein, Caffein, Tobacco smoke, Gamma rays.

Question : Pick out odd one giving reasons.

Question : pi is more when

Question : Phytoplanktons are:

Question : Phytoplanktons of a pond ecosystem act as :

Question : Phytoplanktons are dominant in which of the following zone?

Question : Phytoplanktons are :

Question : Phytoplankton are dominant in

Question : Phytohormone that helps seeds to withstand desiccation and other unfavourable conditions is

Question : Phytochrome is responsible for mediating violet and ultraviolet light effects in plants

Question : Phyto planktons are found in which of the following zones ?

Question : Phytochrome is

Question : Physiological ecology tries to understand :-

Question : Physiological devices of birth control.

Question : Physiological demonstration of osmosis is carried out by

Question : Physiological bamiers of innate immunity includes

Question : Physical barrier method and Chemical barrier method

Question : Phylogeny refers to :-

Question : Phylogeny is

Question : Phylogenetic system of classification includes

Question : Phylloclade modification of aerial stem, which is found in :-

Question : Phylloclade is a modification of :

Question : Phycobilins absorb light of wavelength

Question : Pyramid of biomass generally upright. But pyramid of biomass in sea is generally inverted. Why?

Question :How Phototropic seeds germinate on exposure to light.

Question : Phychotropic drungs induce sleep.

Question : Phototropic and geotropic movements are linked to:

Question : Photosynthetically Active Radiation ranges between the wavelength of….............. .

Question : Photosynthetically active radiation (PAR) represents which of the following range of wavelength ?

Question : Photosynthetic photosystem is consist of :

Question : Photosynthetic pigments present in Euglenoids are :-

Question : Photosynthetic lamellae are seen suspended in peripheral cytoplasm in cells of

Question : Photosynthetic bacteria have

Question :Photosynthetic Active Radiation (PAR) has the following range of wavelengths:

Question : Photosynthesis is maximum in:

Question : Photosynthesis is a process by which green plants trap_____ energy and convert it into _____ energy of carbohydrates

Question : Photosynthesis is a process by which

Question : Photosynthesis is

Question :Photosynthesis cannot continue for long if during light reaction, only cyclic photophosphorylation takes place. This is because:

Question : Photosynthesis cannot continue for long if during light reaction . Only cyclic Photophosphorylation takes place. This is because

Question : Photosynthesis

Question : Photosensitive compound in human eye is made up of

Question : Photorespiration is favoured by:

Question :Photorespiration is characteristic of:

Question : Photorespiration shows formation of:

Question : Photorespiration is also known as Embden Meyerhop pathway.

Question : Photorespiration in low light intensity light in C _3 plants is

Question : Photosynthesis is a process by which green plants trap_ energy and convert it into _ energy of carbohydrates