24277 + Interview Questions in Biology in Class 12 Page 319 InterviewSolution

15901.	Question : How many statements are correct for vascular cryptogams ? (i) First group of evolved terrestrial plants. (ii) Main plant body is independent and diploid. (iii) Gametophytic plant has true root, stem and leaf. (iv) Sporophylls form distinct compact structures in most of the members.
Answer» Four Three Two One ANSWER :C

Discussion

15902.	Question : How many statements are incorrect :- (a) Automobiles are major cause for atmospheric pollution atleast in metrocities. (b) Water which contain 0.1% of impurities of sewage is harmful for drinking. (c) As organic matter increased BOD decreases. (d) High concentration of DDT affects Ca-metabolism in birds.
Answer» One Three Two Four Answer :A

Discussion

15903.	Question :How many statements are correct for resting state of axon ? i. The axoplasm inside the axon contains high concentration of K^(+) and negatively charged proteins and low concentration of Na^(+)ii. In contract, the fluid outside the axon contains a low concentration of K^(+) , is high concentration of Na^(+) and thus form a concentration gradient. iii. The outer surface of the axonal membrane possesses a positive charge while its inner surface becomes negatively charged. iv. The electrical potential difference across the resting plasma membrane is called an the resting potential.v. Resting stage is depolarised statevi. Resting potential is positive potential
Answer» THREE FOUR FIVE All of these ANSWER :B

Discussion

15904.	Question : How many statements are correct ? (a) Deuteromycetes are also known as imperfect fungi because only vegetative or asexual phases of these fungi are known (b) A large number of members of deuteromycetes are decomposer of litter (c) In club fungi stage between dikaryotization and karyogamy is usually prolonged (d) Some members of phycomycetes are obligate parasite on plants
Answer» One Three Two Four Answer :D

Discussion

15905.	Question : How many statements about cannabinoids is/are correct from the given statements? (i) Natural cannabinoids are obtained from the inflorescence of Erythroxylum coca, br (ii) Marijuana, Hashish, Charas and Ganja are obtained from flower tops, leaves and the resin of Papaver somniferum, br (iii) Cannabinoids are generally taken by inhalation and oral ingestion, br (iv) Cannabinoids have no effect on cardiovascular system of body
Answer» One Two Three Four Answer :A

Discussion

15906.	Question : How many statement is/are correct regarding flat worms?(a) Cysticercosis in man is caused by ingestion of cysticercus in measly pork (b) Fasciola enter snarl's body at miracidium stage and leave it at metacercana stage. (c) All flat worms are hermaphrodite and they exhibit cross fertilisation.(d) Nervous system in Dugesia has only 1-3 longitudinal nerve cords connected by transverse commissure. Cerebral ganglia is absent
Answer» Three One Zero Four Answer :C

Discussion

15907.	Question : How many spores given in the box are mytospore and meiospore respectively? Conidia, Zoospore, Sporangiospore, Ascospores, Basidiospores, Oidia
Answer» 2,4 5,1 3,3 4,2 Answer :D

Discussion

15908.	Question : How many sperms are produced from one primary spermatocyte?
Answer» 8 6 2 4 Answer :D

Discussion

15909.	Question : How many sperms willl be produced from 10 primary spematocytes and how many eggs will be produced from 10 primary occytes ?
Answer» SOLUTION :40 SPERMS, 10 EGGS.

Discussion

15910.	Question : How many species of orchids ?
Answer» 200 2000 20000 2,00,000 SOLUTION :20000

Discussion

15911.	Question : How many sperm are produced from a single primary spermatocyte ?
Answer» 2 3 4 5 Answer :C

Discussion

15912.	Question : How many species of fishes from the following ?
Answer» 280 2800 28000 2,80,000 SOLUTION :28000

Discussion

15913.	Question : How many species of beetles ?
Answer» 30000 3,00,000 30,00,000 More than 30 LAC SOLUTION :3,00,000

Discussion

15914.	Question : How many species are documented to be extinct in last 500 years by IUCN Red List, 2004?
Answer» 2000 87 567 784 Solution :The IUCN Red List, 2004 documents the extiction of 784 SPECIES INCLUDING 338 vertebrates, 359 invertebrates and 87 plant in the LAST 500 YEARS.

Discussion

15915.	Question : How many species of ants ?
Answer» 2200 2000 More than 20,000 200 Solution :More than 20,000

Discussion

15916.	Question :How many sentences among following are wrong about prolactin:- (A)It is secreted by both the anterior pituitary and the placenta (B)It cause production of milk and ejection of milk from mammary glands (C)Hyper prolactenaemia cause adverse effect on reproductive function in both male and female (D) Receptors of prolactin are found in cell membrane and cytoplasm.
Answer» 2 3 4 1 Solution :Onlystatement C ISCORRECT. REST all INCORRECT.

Discussion

15917.	Question : How many sets are represented in the species with 156 chromosomes?
Answer» 12 78 39 19 Answer :A

Discussion

15918.	Question : How many segments are involved in formation of anterior sucker in leech?
Answer» SOLUTION : FIRST FIVE SEGMENTS.

Discussion

15919.	Question : How many saddle joints can be traced in human limbs?
Answer» 2 4 8 10 Answer :A

Discussion

15920.	Question : How many ribosomes are required for translation of one molecule of protein ?
Answer» ONE Two As MANY codons Many Answer :A

Discussion

15921.	Question : how many renal corpuscles are approximately present in each kidney of human
Answer» ONE million two million three million four million Answer :A

Discussion

15922.	Question : How many renal pyramids are found in a kidney of man?
Answer» ANSWER :10 to 15

Discussion

15923.	Question : How many recombinant therapeutics have been approved for human use world over ?
Answer» 12 30 20 18 Solution :30

Discussion

15924.	Question : How many recombinant therapeutics worldwide have been approved for human use ?
Answer» 13 25 30 40 Answer :C

Discussion

15925.	Question : How many recombinant therapeutics have been approved for human use the world over ?
Answer» 12 30 20 18 Answer :B

Discussion

15926.	Question : How many races of man ?
Answer» FIVE SIX SEVEN Eight Solution :Five

Discussion

15927.	Question : How many receptor sites are present in Na^(+)-K^(+) pump for binding Na^(+) ions?
Answer» 2 3 1 None of these Answer :B

Discussion

15928.	Question : How many recombinant therapeutics are being marketed in India ?
Answer» 8 12 15 30 Solution :In INDIA, 12 RECOMBINANT therapeutics are PRESENTLY being marketed.

Discussion

15929.	Question : How many quanta are required in photosynthesis to release one molecuole of O_2 ?
Answer» `12` `10` `8` `20` Answer :C

Discussion

15930.	Question : How many prothalial cells are present in the microspore of Cycas, whenit is ready to shed ?
Answer» ONE TWO Three Four Answer :A

Discussion

15931.	Question : How many primary spermatocytes and oocytes are required for formation of 100 spermatozoa and ova?
Answer» Solution :25 primary spermatocytes and 100 primary oocytes will be REQUIRED for the formation of 100 spermatozoa and OVA RESPECTIVELY.

Discussion

15932.	Question : How many possible genotypes are there for the ABO blood group which are controlled by three multiple alleles ?
Answer» 6 4 5 1 Answer :A

Discussion

15933.	Question : How many polypeptides is insulin made of? By which bond do these chains bind together?
Answer» SOLUTION :TWO, DISULPHIDE BOND

Discussion

15934.	Question : How many polypeptide chains are present in single molecule of Haemoglobin protein :
Answer» 1 3 4 2 Answer :C

Discussion

15935.	Question : How many polypeptide chains are present in the molecule of antibody ?
Answer» 2 4 5 8 Solution :4

Discussion

15936.	Question : How many polypeptide chains are found in the prohormone of insulina) Twob) Fourc) Threed) One
Answer» TWO FOUR Three One Answer :C

Discussion

15937.	Question : How many pollen mother cells will produce 1000 pollen grains?(A) 100(B) 200(C) 300(D) 250
Answer» 100 200 300 250 Answer :D

Discussion

15938.	Question : How many polar bodies are produced during the entire process of oogenesis in unmarried human female ?
Answer» THREE TWO One Four ANSWER :C

Discussion

15939.	Question : How many plants given below have syncarpous gynoecium? Rose, Lotus, Michelia, Papaver, Hibiscus
Answer» One Two THREE FOUR ANSWER :B

Discussion

15940.	Question : How many plant species are found in the largely tropical Amazonian rain forest in South America ?
Answer» 4000 More than 4000 40000 More than 40000 SOLUTION :More than 40000

Discussion

15941.	Question : How many peptide strands are there in every antibody molecule ?
Answer» 5 4 2 3 Solution :4

Discussion

15942.	Question : How many plants amongIndigofera, Sesbania,Salvinia, Allium, Aloe, Mustard, Groundnut, Radish, Gram and Turnip have stamens with different lengths in their flower
Answer» Six Three Four Five Answer :C

Discussion

15943.	Question : How many percent of the earth's land area is covered by all the biodiversity hot spots ?
Answer» More than two percent Less than two RECENT More than FINE percent Exactly 2% ANSWER :B

Discussion

15944.	Question : How many people are died for the conservation of plants and nature ?
Answer» 250 363 450 150 ANSWER :B

Discussion

15945.	Question : How many pairs of thoracic ribs a man has ?
Answer» ANSWER :12

Discussion

15946.	Question : How many pairs of sympathetic ganglia are present in man ?
Answer» 12 21 31 8 Answer :B

Discussion

15947.	Question : How many pairs of spinal nerves are present in man ?
Answer» ANSWER :31

Discussion

15948.	Question : How many pairs of homologous chromosomes are present in male Drosophila?
Answer» SOLUTION :3 PAIRS of AUTOSOMES

Discussion

15949.	Question : How many pairs of cranial nerves are present in man ?
Answer» ANSWER :TWELVE

Discussion

15950.	Question : How many pairs of cranial nerves are mixed nerves?
Answer» 3 5 4 4 Answer :C

Discussion

Explore topic-wise InterviewSolutions in .

Question : How many statements are correct for vascular cryptogams ? (i) First group of evolved terrestrial plants. (ii) Main plant body is independent and diploid. (iii) Gametophytic plant has true root, stem and leaf. (iv) Sporophylls form distinct compact structures in most of the members.

Question : How many spores given in the box are mytospore and meiospore respectively? Conidia, Zoospore, Sporangiospore, Ascospores, Basidiospores, Oidia

Question : How many sperms are produced from one primary spermatocyte?

Question : How many sperms willl be produced from 10 primary spematocytes and how many eggs will be produced from 10 primary occytes ?

Question : How many species of orchids ?

Question : How many sperm are produced from a single primary spermatocyte ?

Question : How many species of fishes from the following ?

Question : How many species of beetles ?

Question : How many species are documented to be extinct in last 500 years by IUCN Red List, 2004?

Question : How many species of ants ?

Question : How many sets are represented in the species with 156 chromosomes?

Question : How many segments are involved in formation of anterior sucker in leech?

Question : How many saddle joints can be traced in human limbs?

Question : How many ribosomes are required for translation of one molecule of protein ?

Question : how many renal corpuscles are approximately present in each kidney of human

Question : How many renal pyramids are found in a kidney of man?

Question : How many recombinant therapeutics have been approved for human use world over ?

Question : How many recombinant therapeutics worldwide have been approved for human use ?

Question : How many recombinant therapeutics have been approved for human use the world over ?

Question : How many races of man ?

Question : How many receptor sites are present in Na^(+)-K^(+) pump for binding Na^(+) ions?

Question : How many recombinant therapeutics are being marketed in India ?

Question : How many quanta are required in photosynthesis to release one molecuole of O_2 ?

Question : How many prothalial cells are present in the microspore of Cycas, whenit is ready to shed ?

Question : How many primary spermatocytes and oocytes are required for formation of 100 spermatozoa and ova?

Question : How many possible genotypes are there for the ABO blood group which are controlled by three multiple alleles ?

Question : How many polypeptides is insulin made of? By which bond do these chains bind together?

Question : How many polypeptide chains are present in single molecule of Haemoglobin protein :

Question : How many polypeptide chains are present in the molecule of antibody ?

Question : How many polypeptide chains are found in the prohormone of insulina) Twob) Fourc) Threed) One

Question : How many pollen mother cells will produce 1000 pollen grains?(A) 100(B) 200(C) 300(D) 250

Question : How many polar bodies are produced during the entire process of oogenesis in unmarried human female ?

Question : How many plants given below have syncarpous gynoecium? Rose, Lotus, Michelia, Papaver, Hibiscus

Question : How many plant species are found in the largely tropical Amazonian rain forest in South America ?

Question : How many peptide strands are there in every antibody molecule ?

Question : How many plants amongIndigofera, Sesbania,Salvinia, Allium, Aloe, Mustard, Groundnut, Radish, Gram and Turnip have stamens with different lengths in their flower

Question : How many percent of the earth's land area is covered by all the biodiversity hot spots ?

Question : How many people are died for the conservation of plants and nature ?

Question : How many pairs of thoracic ribs a man has ?

Question : How many pairs of sympathetic ganglia are present in man ?

Question : How many pairs of spinal nerves are present in man ?

Question : How many pairs of homologous chromosomes are present in male Drosophila?

Question : How many pairs of cranial nerves are present in man ?

Question : How many pairs of cranial nerves are mixed nerves?