24277 + Interview Questions in Biology in Class 12 Page 275 InterviewSolution

13701.	Question : Major major limiting factor for the rate of photosynthesis under the natural environmental conditionsis
Answer» Temperature Light CO_2 concentration Water Answer :C

Discussion

13702.	Question :Major conduit of energy transfer in terrestial ecosystem is :-
Answer» Grazing FOOD CHAIN Detritus food chain Parasitic food chain Predatory food chain Answer :B

Discussion

13703.	Question :Major conduit for energy flow in tropical rain forest, is :-
Answer» Parasitic FOOD chain DETRITUS food chain GRAZING food chain All of the above Answer :B

Discussion

13704.	Question : Middle lamella is composed mainly of:
Answer» CA carbonate Ca pectate Cellulose Hemicellulose Answer :B

Discussion

13705.	Question : Major cause for the respiratory disorder, characterized by decreased respiratory surface area is
Answer» TOBACCO chewing Hypersensitivity Bacteria Tobacco smoking Answer :D

Discussion

13706.	Question : Major biomes such as desert, rain forest and tundra are formed due to
Answer» Annual variation in the intensity of temperature Annual variation in the duration of temperature Annual variation in the PRECIPITATION Solution :1) Rotation of our plant (Earth) around the Sun and the tilt of its AXIS CAUSE annual variations in the internsity and duration of temperature resulting in distinct seasons. 2) Annual variations in intensity and duration of temperature together with annual variation in precipitation account for the formation of major biomass such as desert, rain forest and TUNDRA.

Discussion

13707.	Question : major amount of oxygen in blood is transported in the form of
Answer» BICARBONATE ions oxyhaemoglobin Dissolved FORM in plasma carboxyhaemoglobin Answer :B

Discussion

13708.	Question : Major aerosol pollution in jet plane emission is
Answer» SULPHUR dioxide Carbon monoxide Methane Fluorocarbons Answer :B

Discussion

13709.	Question : Major amount of photosynthesis is performed by
Answer» DIATOMS DINOFLAGELLATES EUGLENOIDS Prozoans Answer :A

Discussion

13710.	Question : Maize hybrids have been developed for higher amount of(A) Methionine(B) Lysine(C) Leucine(D) Cysteine
Answer» METHIONINE LYSINE LEUCINE CYSTEINE SOLUTION :Lysine

Discussion

13711.	Question : Maize has 10 pairs of chromosomes. How many linkage groups will be present if all the genes are mapped?
Answer» 15 10 20 40 Answer :B

Discussion

13712.	Question : Kinetochores of a chromosome are
Answer» Disc SHAPED PROTEINACEOUS structure present at the centromere Present near SECONDARY constriction Distributed all over the length of the chromosomes Beaded string LIKE structures Answer :A

Discussion

13713.	Question : Maize consists of nectarless flowers but in orchids flowers are nectary and attractive . Analyse the characteristic of both the flowers on the agents involved in pollen transfer .
Answer» Solution :Maize - Anemophily - Wind POLLINATION. Numerous pollen GRAINS light pollen small and clustered flowers. Orchid - Entamophily - Insect pollination . Attractive flowers NECTAR present bright COLOURS STICKY pollen grains.

Discussion

13714.	Question : Kinefelter's syndrome.
Answer» SOLUTION :(1)Kinefelter's sundrome is a genetic DISORDER caused due to trisomy of X chromosome.(2)It was first desvribed by harry klinefelter.(3)Klinefelter's syndrome is caused due to nonadjunction of sex chromosomes which takes PLACE during gamete formation.(4)Chromosomal compement of klinefelter's syndrome is 44+XXY,having a total of 47 chromosomes.(5)Symptoms of klinefelter's syndrom are as follows:(i)The klinefelter's syndrome individuals are tall,thin and eunuchoid.(ii)They are sterile nwith poorly developed sexual characteristics(iii)Testes are underdeveloped and small.Spermatogenesis does not TAKE place.(iv)They have subnormal INTELLIGENCE and show partial mental retardation.

Discussion

13715.	Question : "Maintenance of personal and public hygiene is necessary for prevention and control of many infectious disease." Justify the statement giving suitable examples.
Answer» Solution :Both personal and public hygienes are essential to prevent and control infectious diseases. Personal hygiene helps in preventing growth of microbes on or within the body. Public hygiene PREVENTS spread of disease-causing microorganisms through water, AIR and garbage. For example, (a) Keeping the surroundings clean will prevent houseflies to multiply and protect human SOCIETY from diarrhoea. (b) Not allowing the water to stagnate. This prevents breeding of MOSQUITOES and check spread of malarial and dengue fever. (c) Most water and sanitation related diseases like diarrhoea, dysentery, CHOLERA and jaundice can be prevented by improving hygiene behaviour.

Discussion

13716.	Question : Killing and eadting an organism is :
Answer» Parasitism Exploitation Symbiosis PREDATION Solution :Predation is RELATIONSHIP of PREDATOR and prey in which predator KILLS and eats the prey.

Discussion

13717.	Question : Kidneys produce about 180 litres of filtrate per day, but the actual urine production is about 1.2 to 1.5 litres per day. How does this reduction take place?
Answer» Solution :Though the glomerular FILTRATE is 180 litres per day, 99% of the amount is reabsorbed during the process of SELECTIVE REABSORPTION. Depending upon concentration gradient, there are two PROCESSES, passive transport or osmosis and active transport. Since the renal tubule is surrounded by peritubular capillaries, this absorption is rapid and as per concentration gradient. Similarly large amount of water is reabsorbed by renal tubule. In this way the REDUCTION of the filtrate takes place.

Discussion

13718.	Question : Maize flowers are(A) autogamous(B) entomophilous(C) anemophilous(D) hydrophilous
Answer» autogamous entromophilous anemophilous hydrophilous Answer :C

Discussion

13719.	Question : Kidneys diseases or kidney failure has a side effect. These patients also show decreased RBC production. Why?
Answer» Solution :1. When there is kidney failure, the peptide hormone, ERYTHROPOIETIN MAY not be produced in proper amount. 2. This hormone stimulates BONE marrow for the production of RBCs. 3. THUS patients having kidney failure show decreased RBC production.

Discussion

13720.	Question : "Maintenance of personal and public hygiene is necessary for prevention and control of many infectious diseases". Justify the statement giving suitable examples.
Answer» SOLUTION :Measures for personal hygiene INCLUDE keeping the BODY clean, consumption of clean drinking water, food, vegetables, fruits, etc. Public hygiene INCLUDES proper disposal of waste and excreta, periodic cleaning and disinfection of water reservoirs, pools, cesspools and tanks, and OBSERVING standard practices of hygiene in public catering. These measures are particularly essential where the infectious agents are transmitted through food and water such as typhoid, amoebiasis and ascariasis. Healthy habits also includes regular excersise, taking proper sleep, etc.

Discussion

13721.	Question : Kidneys of man are formed are:
Answer» Pronephros Mesonephros Metanephros Opisthonephros Answer :C

Discussion

13722.	Question : ………..maintains basic metabolic rate
Answer» THYROXINE ADH GH OXYTOCIN ANSWER :A

Discussion

13723.	Question : Kidney transplantation or renal transplantation.
Answer» Solution :(1)Kidney transplantation is carried out on patients with end-stage renal disease.(2)Kidney transplantation is CLASSIFIED into TWO type,viz.,desceased-DONOR or cadavric and livig-donor transplantation.This classification is based on the source of the donor organ.(3)Living-donor renal transplants are further classifeid as genetically related (living-related)or non-elated(living-unrelated)transplants.(4)In living-related trnsplant,the relative with biological reltionship donates the kidney.(5)In living-ynrelated type of TRANSPLANT the donor is not biologicallly related to the PATEINT.

Discussion

13724.	Question : Kidney in amphibians is :-
Answer» Pronephric Mesonephric Archinephric Metanephric Answer :B

Discussion

13725.	Question : Maintaining the constancy of internal environment is called.
Answer» HOMEOSTASIS DIAPAUSE HIBERNATION AESTIVATION ANSWER :A

Discussion

13726.	Question : Khorana and his colleagues synthesized an RNA molecule with repeating sequence of AG nitrogenous bases (AG AGAGAGAG AG). It produced a tetrapeptide with alternating sequence of valine and tyrosine. It proves that codon for valine and tyrosine are?
Answer» SOLUTION :CODON for VALINE - AGA Codon for tyrosine - GAG

Discussion

13727.	Question : Keystone species deserve protection because
Answer» They are CAPABLE of surviving in harsh environmental conditions Indicate PRESENCE of certain MINERALS in the soil Have become rare due to over exploitation Play an important role in SUPPORTING their species Solution :Play an important role in supporting their species

Discussion

13728.	Question : Mainly which type of hormones control the menstrual cycle in human beings ?
Answer» FSH LH FSH, LH, Estrogen Progesterone Answer :C

Discussion

13729.	Question : Mainly which hormones control menstrual cycle in human beings :-
Answer» FSH LH FSH, LH, Estrogen Oxytocin Answer :C

Discussion

13730.	Question : Keys are made for the taxonomy of :-
Answer» FAMILIES of PLANTS only Families of ANIMALS only SPECIES of plants only Families, GENUS and species of both plants and animals Answer :D

Discussion

13731.	Question : Mainly food digestion in earthworm occurs in
Answer» Gizzard Pharynx Buccal cavity Stomach Answer :D

Discussion

13732.	Question : 'Key' is a taxonomical aid used for the identification of organism. Each statement in the key is called.....?
Answer» Couplet Lead Both (1) and (2) Texa Answer :B

Discussion

13733.	Question : Main sugar present in honey is :
Answer» Maltose Levulose Dextrose Ribose Answer :B

Discussion

13734.	Question : Karyoplasmic index (K.I.) is :-
Answer» `(V_(N))/(V_(n) - V_(C))` `(V_(n))/(V_(c) - V_(n))` `(V_(c))/(V_(n))` `(V_(n))/(V_(c) + V_(n))` ANSWER :B

Discussion

13735.	Question : Main steps related to variety development are given below. But one step is missing. a. Identify the missing step. b. What is the significance of the step in variety development?
Answer» SOLUTION :a. SELECTION b. Selection helps to create genetic variation PRESENT in a population and to produce a NEW population with improved characters.

Discussion

13736.	Question : Karyokinesis is the division to form two daughter ___________
Answer» ANSWER :NUCLEI

Discussion

13737.	Question : Main source of Fisheries is :
Answer» Rivers Ponds SEA Khet talavadi SOLUTION :Sea

Discussion

13738.	Question : Karyopsis is
Answer» ONE SEEDED FRUIT TWO seeded fruit three seeded fruit four seeded fruit Answer :A

Discussion

13739.	Question :The main sources of biofertilisers are
Answer» Symbiotic microbes Only NITROGEN fixative bacteria Only nitrogen fixative CYANOBACTERIA Bacteria, cyanobacteria and FUNGUS Solution : Only nitrogen fixative cyanobacteria

Discussion

13740.	Question : Karina Kapoor is a famous Bollywood actress noted for her charming beauty. Carina is the last cartilage found in the trachea. Now answer the question. What do you mean by shaeli?
Answer» SOLUTION :Shaeli is a CONTRACEPTIVE pill developed by Central DRUG RESEARCH Institute (CDRI) in Lucknow, India. It contains a non-steroidal PREPARATION called centchroman.

Discussion

13741.	Question : Main source of ATP in a cell is by oxidative phosphorylation is
Answer» GLYCOLYSIS ETS KREBS CYCLE Pyruvate OXIDATION Answer :B

Discussion

13742.	Question : Karyochorisis stands for
Answer» MITOSIS with INTERNUCLEAR SPINDLE formation Mitosis with INTRANUCLEAR spindle formation Mitosis WITHOUT spindle formation Meiosis with internuclear spindle formation Answer :B

Discussion

13743.	Question : Main source of ATP in a cell is:
Answer» Glycolysis ETS Krebs cycle Fermentation Answer :B

Discussion

13744.	Question : Kappa particles are:
Answer» endosymbions repesenting the GRAM -positave BACTERIA species Submcroscopicgeanules formed by the folding the nakes DNA viral pathicles capable of self -perpetuation in the host cytoplasm PROTOZOAN PARASITES whosemultiplication is controlled by ht ehost metabolites ANSWER :A

Discussion

13745.	Question : Main role of minor elements is to act as
Answer» CONSTITUENT of hormones Binder of CELL structure Cofactor of enzymes Constituent of AMINO acids Answer :C

Discussion

13746.	Question : Kanha National Park is famous for Kasmiri stag.
Answer» ANSWER :DACHIGAM SANCTUARY

Discussion

13747.	Question :Main objective of production/use of herbicide resistant GM crops is to
Answer» ELIMINATE weeds from the field without the use of MANUAL labour Eliminate weeds from the field without the use of herbicides Encourage eco-friendly herbicides Reduce herbicide ACCUMULATION in FOOD articles for health safety Answer :D

Discussion

13748.	Question : Kanha national park is famous for :
Answer» BIRDS Tigers Cats Jackals Answer :B

Discussion

13749.	Question : Main objective of production use of herbicide resistant GM crops is to
Answer» ENCOURAGE eco-friendly herbicides Reduce herbicide accumulation articles for health safety Eliminate WEEDS from the fields without the in food USE of MANUAL labour Eliminate weeds from the fields without the use of herbicides SOLUTION :Eliminate weeds from the fields without the use of manual labour

Discussion

13750.	Question : Kangaroo rat is capable of meeting its requirement of water through
Answer» REDUCTION of FATS OXIDATION of PROTEINS Reduction of proteins Oxidation of fats ANSWER :D

Discussion

Explore topic-wise InterviewSolutions in .

Question : Major major limiting factor for the rate of photosynthesis under the natural environmental conditionsis

Question :Major conduit of energy transfer in terrestial ecosystem is :-

Question :Major conduit for energy flow in tropical rain forest, is :-

Question : Middle lamella is composed mainly of:

Question : Major cause for the respiratory disorder, characterized by decreased respiratory surface area is

Question : Major biomes such as desert, rain forest and tundra are formed due to

Question : major amount of oxygen in blood is transported in the form of

Question : Major aerosol pollution in jet plane emission is

Question : Major amount of photosynthesis is performed by

Question : Maize hybrids have been developed for higher amount of(A) Methionine(B) Lysine(C) Leucine(D) Cysteine

Question : Maize has 10 pairs of chromosomes. How many linkage groups will be present if all the genes are mapped?

Question : Kinetochores of a chromosome are

Question : Maize consists of nectarless flowers but in orchids flowers are nectary and attractive . Analyse the characteristic of both the flowers on the agents involved in pollen transfer .

Question : Kinefelter's syndrome.

Question : "Maintenance of personal and public hygiene is necessary for prevention and control of many infectious disease." Justify the statement giving suitable examples.

Question : Killing and eadting an organism is :

Question : Kidneys produce about 180 litres of filtrate per day, but the actual urine production is about 1.2 to 1.5 litres per day. How does this reduction take place?

Question : Maize flowers are(A) autogamous(B) entomophilous(C) anemophilous(D) hydrophilous

Question : Kidneys diseases or kidney failure has a side effect. These patients also show decreased RBC production. Why?

Question : "Maintenance of personal and public hygiene is necessary for prevention and control of many infectious diseases". Justify the statement giving suitable examples.

Question : Kidneys of man are formed are:

Question : ………..maintains basic metabolic rate

Question : Kidney transplantation or renal transplantation.

Question : Kidney in amphibians is :-

Question : Maintaining the constancy of internal environment is called.

Question : Khorana and his colleagues synthesized an RNA molecule with repeating sequence of AG nitrogenous bases (AG AGAGAGAG AG). It produced a tetrapeptide with alternating sequence of valine and tyrosine. It proves that codon for valine and tyrosine are?

Question : Keystone species deserve protection because

Question : Mainly which type of hormones control the menstrual cycle in human beings ?

Question : Mainly which hormones control menstrual cycle in human beings :-

Question : Keys are made for the taxonomy of :-

Question : Mainly food digestion in earthworm occurs in

Question : 'Key' is a taxonomical aid used for the identification of organism. Each statement in the key is called.....?

Question : Main sugar present in honey is :

Question : Karyoplasmic index (K.I.) is :-

Question : Main steps related to variety development are given below. But one step is missing. a. Identify the missing step. b. What is the significance of the step in variety development?

Question : Karyokinesis is the division to form two daughter ___________

Question : Main source of Fisheries is :

Question : Karyopsis is

Question :The main sources of biofertilisers are

Question : Karina Kapoor is a famous Bollywood actress noted for her charming beauty. Carina is the last cartilage found in the trachea. Now answer the question. What do you mean by shaeli?

Question : Main source of ATP in a cell is by oxidative phosphorylation is

Question : Karyochorisis stands for

Question : Main source of ATP in a cell is:

Question : Kappa particles are:

Question : Main role of minor elements is to act as

Question : Kanha National Park is famous for Kasmiri stag.

Question :Main objective of production/use of herbicide resistant GM crops is to

Question : Kanha national park is famous for :

Question : Main objective of production use of herbicide resistant GM crops is to

Question : Kangaroo rat is capable of meeting its requirement of water through