24277 + Interview Questions in Biology in Class 12 Page 200 InterviewSolution

9951.	Question : Prions are:
Answer» KIND of bacteria Group of microbes Proteinc INFECTING agents Self DUPLICATING oligosaccharides Answer :C

Discussion

9952.	Question :"Primitive organisms evolved spontaneously from the inorganic matter as a result of formative action of physical forces like electric charges, U.V. radiations and radiations of radioactive elements" was proposed and supported respectively by
Answer» ARISTOTLE, Thales, Plato and Von Helmont Francesco REDI, SPALLANZANI and LOUIS Pasteur A.I. OPARIN, J.B.S. Haldane Father Saurez and Cluvier Answer :C

Discussion

9953.	Question : Primate like lemur is pollinator of _______plant.
Answer» Flax Ravenela Zostera Aquilegia Answer :B

Discussion

9954.	Question : Primary wall grows by
Answer» Accertion Introgression Intussusception All the above Answer :C

Discussion

9955.	Question : Primary visual area is located in
Answer» DIENCEPHALON OPTIC LOBE cerebelluin CEREBRUM ANSWER :D

Discussion

9956.	Question : Primary succession on rocks starts with :
Answer» HERBS ANIMALS Lichens Trees Answer :C

Discussion

9957.	Question : Primary succession on rocks is known as Xerosere. Answer the following related with Xerosere. Organic acids have important roles in this sucession. Justify.
Answer» Solution :it HELPS in WEATHERING of ROCKS and soil INFORMATION.

Discussion

9958.	Question : Primary succession on rock is known as Xerosere. Answer the following related with Xerosere. Organic acid has important roles in this succession justify.
Answer» Solution :Lichens which are ABLE to secrete acid to dissove the ROCK which HELPS in the WEATHERING of rock and SOIL formation.

Discussion

9959.	Question : Primary succession on land occurs as
Answer» LICHEN `rarr` mosses `rarr` ANNUAL grass `rarr` shrubs `rarr` trees mosses `rarr` lichen `rarr` annual grass `rar` shrubs `rarr` trees plankton `rarr` SUBMERGED `rarr` floating stage `rarr` MARSH stage `rarr` climax stage all of these Answer :A

Discussion

9960.	Question : Primary succession is development of biotic communities on :- (a) Newly exposed habitat (b) Cleared forest area (c) Freshly harvested crop field (d) Pond filled after a dry season
Answer» only a a & d a, C, d b, c, d Answer :A

Discussion

9961.	Question : Primary succession is a long term process, while secondary succession is a short term process. Name the pioneer species in hydrarch succession
Answer» SOLUTION :PHYTOPLANKTONS

Discussion

9962.	Question : Primary spermatocyte refers to
Answer» sperm before first maturation DIVISION sperm after the first maturation division spermatogonium which ceases divisions and starts growing primordial sex CELL ANSWER :C

Discussion

9963.	Question : Primary sludge is used for
Answer» PREPARATION of compost Preparation of manure Biogas production All the above Answer :D

Discussion

9964.	Question : Primary productivity varies in different types of ecosystems. Give reasons with suitable examples.
Answer» SOLUTION :In some ecosystems producers number and nutrient CONTENT are not STABLE.

Discussion

9965.	Question : Primary site of pulmonary gas exchange is
Answer» TRACHEA ALVEOLI Larynx Bronchi ANSWER :B

Discussion

9966.	Question : Primary productivity varies from ecosystem to ecosystem. Explain.
Answer» SOLUTION :Primary productivity VARIES from ecosystem to ecosystem because it DEPENDS on the plant species INHABITING the area and their photosynthetic activity. It also depends on various ENVIRONMENTAL factors.

Discussion

9967.	Question : Primary productivity varies from ecosystem to ecosystem. Explain ?
Answer» Solution :Primary producers OBTAIN sun RAYS and collect them as chemical ENERGY which is called primary productivity. Primary production depends on green PLANTS which is different from one ecosystem to another Therefore primary productivity is different from one ecosystem to another ecosystem. `underset("(10 kg BIOMASS)")("deer")underset(underset(underset" (means 9 kg)"("and other process 90%"))("energy lost in respiration"))rarrunderset("1 kg")("Lion")`

Discussion

9968.	Question : Primary productivity depends upon which of the following?
Answer» ENVIRONMENTAL FACTOR Photosynthetic CAPACITY of plant Availability of nutrients All of the above SOLUTION :All of the above

Discussion

9969.	Question : Primary productivity does not depend upon
Answer» plant SPECIES inhabiting a PARTICULAR area photosynthetic CAPACITY of plants biomass of parasites availability of nutrients Answer :C

Discussion

9970.	Question : Primary oocyte is
Answer» Haploid DIPLOID POLYPLOID NONE of the above. Answer :B

Discussion

9971.	Question : Primary oocyte inside primary follicle is temporarily arrested in which stage of meiotic division?
Answer» PROPHASE I METAPHASE II Anaphase I Telophase I Answer :C

Discussion

9972.	Question :Primary endosperm nucleus is formed by the fusion of _____ and_______
Answer» ZYGOTE and MALE GAMETE Male gamete and embryo Pollen GRAIN and embryo Secondary NUCLIE and male gamete Answer :D

Discussion

9973.	Question : Why does the zygote begin to divide only after the division of Primary Endosperm Cell (PEC)?
Answer» Solution :LOCATION: In ovule after fertilization DEVELOPS primary ENDOSPERM Function: FORMS embryo tissue

Discussion

9974.	Question : Primary electron acceptor in noncyclic transport is ul(A)located towards ul(B) donates its electrons to ul(C) , respectively are
Answer» PHEOPHYTIN, OUTSIDE of membrane `Q_A` `A_0`INNERSIDE of membrane , `NADP^(+)` Pheophytin , innerside of membrane, PC `A_0`innerside of membrane , PC Answer :A

Discussion

9975.	Question : Primary consumers in detritus food chain are
Answer» herbivores bacteria and fungi insect LARVAE, NEMATODES all the above Answer :B

Discussion

9976.	Question : Primary constituents of photochemical smog are:
Answer» `SO_2` and `CO_2` `CO_2` and `NO_2` `NO_2` and hydrocarbons Hydroarbons and CFCs Answer :C

Discussion

9977.	Question : Primary carboxylation occurs in C_3 and C_4 plants respectively with the help of
Answer» RUBP CARBOXYLASE and PERcarboxylase RuBP carboxylase and PERcarboxylase REP carboxylase and RuBPcarboxylase REP carboxylase and RuBPcarboxylase ANSWER :A

Discussion

9978.	Question : Primary colours are
Answer» BLUE, VIOLET and red Blue, green and yellow Blue, green and red Violet, yellow and red. Answer :C

Discussion

9979.	Question : Primary CO_2 acceptor of CAM plant:
Answer» OAA PGA PEP and RuBP Citric acid Answer :C

Discussion

9980.	Question : Primary auditory area is located in the ..... lobes of cereburm
Answer» FRONTAL TEMPORAL OCCIPITAL parietal Answer :B

Discussion

9981.	Question : Primary acceptor of CO_2 in C_3 cycle is
Answer» 3 - CARBON - ketose sugar 3 - carbon - aldosesugar 5 - carbon - aldosesugar 3 - carbon - ketosesugar ANSWER :D

Discussion

9982.	Question : Pribnow box is involved in
Answer» PROTEIN SYNTHESIS DNA synthesis RNA synthesis DNA replication Answer :C

Discussion

9983.	Question : Prihistoric man who lived on earth during late pleistocene was
Answer» Cro-Magnon Atlantic Man Australopithecus NEANDERTHAL man Solution :Aposematic Colouration. A warning colouration that makes poisonous foul tasting or DANGEROUS animal conspicuous to its PREDATOR, e.g., yellow-black stripes of BEES and WASPS, red-yellow colour of many poisonous frogs.

Discussion

9984.	Question : _____prevents the. passage of food particles into the respiratory tract.
Answer» ANSWER :EPIGLOTTIS

Discussion

9985.	Question : ______prevents coagulation of blood in blood vessel.
Answer» `CA^+` Vit-K Heparin Prothrombin Answer :C

Discussion

9986.	Question :"Prevention is better than cure". Comment
Answer» SOLUTION : .Prevention is better than cure. means it is better to TAKE care or stop diseases from happening. This can be supported by CITING following examples: (a) We can keep our teeth and gumshealthy by brushing them TWICE a day. (b) Stomach upset can be avoided by washing hands properly before eating or by not eating uncovered food. (c) Malaria and dengue can be prevented by protecting from mosquito bite if HOUSES have netted doors and windows or there is no stagnant water for mosquitoes to breed. (d) More than one in three people are expected to develop cancer during their lifetime, yet half of all cancers could be prevented by changes in the life style. These changes include stop smoking, stay in shape by eating healthy, eat smaller amounts and exercise, protect yourself from harmful UV sun rays, be aware of any changes and stay relaxed with good night sleep.

Discussion

9987.	Question : "Prevention is better than cure". Comment.
Answer» Solution :Prevention is BETTER than cure is true as in same cases the disease is non- curable like AIDS and Hepatitis-B, and in some cases the TREATMENT CAUSES financial PROBLEMS in the FAMILY.

Discussion

9988.	Question : Prevention and control of air pollution.
Answer» Solution :(1)Air quality strands are set.Adequate legislation is enforced to check emission of air pollutants.(2)Devices like positive CRANKCASE ventilation valve and catalutie converter,ELECTROSTATIC precipitation,etc,are used to control the pollutions.These devices can reduce the smoke and dust.(3)Gaseous pollutants are removed by making them soluble.For such purpose,scrubbers are used ,Water is used which can effectively separate many gases such as ammonia and sulphur DIOXIDE.(4)Filtration and absorption processes using activated CARBON is done for removing other gases.(5)All type of vehicles that run on petrol and siesel are checked for their emissions.(6)Use of two stroke engine and unleaded petrol is also one of the control measures against pollution.(7)Diesel engines running on mixed fuels CONTAINING 40% methanol are being recommended for combatting pollution.

Discussion

9989.	Question : Presumptive ectorderm is that d
Answer» LAYER which presemuablyis ectoderm layer which may or may not DEVELOP into ectoderm area around the margin of the blastoproe which rollsinto the INTERIOR of the embryo thus, formaing the lining of PRIMITIVE gut NONE of the above Answer :C

Discussion

9990.	Question : Pressure potential in thistle funnel develop
Answer» Before the ADDITION of solute After the addition of solute Before the ENTRY of WATER After the entry of water in the THISTLE funnel Answer :D

Discussion

9991.	Question : Pressure inside which tissue is highest
Answer» SIEVE tubes xylem endodermis Both (a) and (C ) ANSWER :A

Discussion

9992.	Question : Pressure developed in seive elements during transports of sucrose is
Answer» Positive Negative Zero None Answer :A

Discussion

9993.	Question : Pressure develops in the tracheary elements of xylem as a result of metabolic activities of root.
Answer» ANSWER :ROOT PRESSURE

Discussion

9994.	Question : Presnece of antifreeze glycoproteins in many fishes of Antarctic waters is a biochemical/physiological adaptation.
Answer» SOLUTION :BIOCHEMICAL

Discussion

9995.	Question : Present day crops are different from their wild ancestors. Why?
Answer» SOLUTION :Present day CROPS are the result of selection CARRIED out by the prehistoric humans. During selection, the plants having the desired CHARACTERS are picked up from a POPULATION eliminating the undesirable ones.

Discussion

9996.	Question : Presence or absence of hymen is not a reliable indicator of virginity or sexual experience.
Answer» ANSWER :1

Discussion

9997.	Question : Presence of whole sets of chromosomes is called …………. .
Answer» aneuploidy ploidy euploidy chromatography Answer :C

Discussion

9998.	Question : Presence of which of the following hormones in the urie confirms pregnancy?
Answer» Progesterone Estrogen Human CHORIONIC gonadotropin Prolactin Answer :C

Discussion

9999.	Question : Presence of which structure in the female genital system of girls is a proof of virginity ?
Answer» ANSWER :HYMEN

Discussion

10000.	Question : Presence of which substance in urine indicates the disease diabetes mellitus?
Answer» ANSWER :GLUCOSE

Discussion

Explore topic-wise InterviewSolutions in .

Question : Prions are:

Question :"Primitive organisms evolved spontaneously from the inorganic matter as a result of formative action of physical forces like electric charges, U.V. radiations and radiations of radioactive elements" was proposed and supported respectively by

Question : Primate like lemur is pollinator of _______plant.

Question : Primary wall grows by

Question : Primary visual area is located in

Question : Primary succession on rocks starts with :

Question : Primary succession on rocks is known as Xerosere. Answer the following related with Xerosere. Organic acids have important roles in this sucession. Justify.

Question : Primary succession on rock is known as Xerosere. Answer the following related with Xerosere. Organic acid has important roles in this succession justify.

Question : Primary succession on land occurs as

Question : Primary succession is development of biotic communities on :- (a) Newly exposed habitat (b) Cleared forest area (c) Freshly harvested crop field (d) Pond filled after a dry season

Question : Primary succession is a long term process, while secondary succession is a short term process. Name the pioneer species in hydrarch succession

Question : Primary spermatocyte refers to

Question : Primary sludge is used for

Question : Primary productivity varies in different types of ecosystems. Give reasons with suitable examples.

Question : Primary site of pulmonary gas exchange is

Question : Primary productivity varies from ecosystem to ecosystem. Explain.

Question : Primary productivity varies from ecosystem to ecosystem. Explain ?

Question : Primary productivity depends upon which of the following?

Question : Primary productivity does not depend upon

Question : Primary oocyte is

Question : Primary oocyte inside primary follicle is temporarily arrested in which stage of meiotic division?

Question :Primary endosperm nucleus is formed by the fusion of _____ and_______

Question : Why does the zygote begin to divide only after the division of Primary Endosperm Cell (PEC)?

Question : Primary electron acceptor in noncyclic transport is ul(A)located towards ul(B) donates its electrons to ul(C) , respectively are

Question : Primary consumers in detritus food chain are

Question : Primary constituents of photochemical smog are:

Question : Primary carboxylation occurs in C_3 and C_4 plants respectively with the help of

Question : Primary colours are

Question : Primary CO_2 acceptor of CAM plant:

Question : Primary auditory area is located in the ..... lobes of cereburm

Question : Primary acceptor of CO_2 in C_3 cycle is

Question : Pribnow box is involved in

Question : Prihistoric man who lived on earth during late pleistocene was

Question : _____prevents the. passage of food particles into the respiratory tract.

Question : ______prevents coagulation of blood in blood vessel.

Question :"Prevention is better than cure". Comment

Question : "Prevention is better than cure". Comment.

Question : Prevention and control of air pollution.

Question : Presumptive ectorderm is that d

Question : Pressure potential in thistle funnel develop

Question : Pressure inside which tissue is highest

Question : Pressure developed in seive elements during transports of sucrose is

Question : Pressure develops in the tracheary elements of xylem as a result of metabolic activities of root.

Question : Presnece of antifreeze glycoproteins in many fishes of Antarctic waters is a biochemical/physiological adaptation.

Question : Present day crops are different from their wild ancestors. Why?

Question : Presence or absence of hymen is not a reliable indicator of virginity or sexual experience.

Question : Presence of whole sets of chromosomes is called …………. .

Question : Presence of which of the following hormones in the urie confirms pregnancy?

Question : Presence of which structure in the female genital system of girls is a proof of virginity ?

Question : Presence of which substance in urine indicates the disease diabetes mellitus?

Question :Primary endosperm nucleus is formed by the fusion of _ and___