24277 + Interview Questions in Biology in Class 12 Page 377 InterviewSolution

18801.	Question : cultivation of crops is
Answer» HORTICULTURE AGRICULTURE OLERICULTURE FLORICULTURE ANSWER :B

Discussion

18802.	Question : Cultivation of Bt cotton has bee much in the news. The prefix Bt means:
Answer» Barium - TREATED cotton seeds Bigger thread variety of cotton with BETTER tensile strength Procuced by biotechnology using restriction enzymes and ligases Carrying an ENDOTOXIN GENE from BACILLUS thuringiensis Answer :D

Discussion

18803.	Question : Cucurbits are dioecious while date palm is monoecious. Why are they called so?
Answer» SOLUTION :DIOECIOUS- MALE and FEMALE flowers on different plants, monoecious-male and female flowers on the same plant

Discussion

18804.	Question : Culex fatigan is a(A) Worm(B) Virus(C) Mosquito(D) Bacteria
Answer» Worm Virus MOSQUITO Bacteria SOLUTION :Mosquito

Discussion

18805.	Question : Cuckoo lays eggs in the nest of crow during breeding season. This is an example for
Answer» ECTOPARASITISM ENDOPARASITISM BROOD PARASITISM Mutualism Answer :C

Discussion

18806.	Question : Cu ions released from copper-releasing Intra Uterine Devices(IUDs)
Answer» increase phagocytosis of sperm suppress sperms motility prevent OVULATION MAKE uterus unsuitable for IMPLANTATION ANSWER :B

Discussion

18807.	Question : Cu ions released from copper-releasing intra uterine devices (IUDs)
Answer» MAKE uterus UNSUITABLE for implantation increase PHAGOCYTOSIS of sperms suppress SPERM motility prevent ovulation Answer :C

Discussion

18808.	Question : Cu ions released from copper-releasing Intra Uterine Devices (IUDs) :-
Answer» Prevent ovulation Make fallopian TUBE UNSUITABLE for fertilization Increase phagocytosis of sperms Suppress SPERM motility Answer :D

Discussion

18809.	Question : Ctenophores exhibit
Answer» Bioluminescence Sessile nature Paedogenesis Both (1) & (3) ANSWER :D

Discussion

18810.	Question : Ctenophores are commonly known as ______
Answer» ANSWER :Combjellies

Discussion

18811.	Question : CSF, which is formed from chorold plexes, enters the subarachnoid spacethrough
Answer» FORAMEN of Magendie foramen MAGNUM foramen of Monro foramen of OVALE ANSWER :A

Discussion

18812.	Question : Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because:
Answer» BACTERIA are RESISTANT to the TOXIN toxin exist as toxoid toxin exist as prototoxins bacteria ENCLOSES toxin in a special sac Answer :C

Discussion

18813.	Question : Crystals of Bt toxin produced by Bacillus thuringiensis do not kill the bacteria themselves because.
Answer» BACTERIA is RESISTANT to TOXIN Toxins only kill ANIMALS Toxin is inactive Toxin is protein Answer :C

Discussion

18814.	Question : Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because(A) Bacteria are resistant to toxin(B) Toxin is immature(C) Toxin is inactive(D) Bacteria encloses toxin in special sac
Answer» BACTERIA are resistant to the toxin. toxin is IMMATURE. toxin is INACTIVE. bacteria encloses toxin in special SAC. SOLUTION : toxin is inactive.

Discussion

18815.	Question : Crystals of Bt toxin produced by some bacteria do not kill the bacteria because
Answer» BACTERIA are resistant to the toxin Toxin is inactive Toxin is immature Bacteria ENCLOSE toxin in a SPECIAL sac Answer :B

Discussion

18816.	Question : Crystalline rocks are natural source of which of the by genetic element?
Answer» Calcium Phosphorus Magnesium Sulphur Answer :B

Discussion

18817.	Question : Crystals of Bt toxin produced by some bacteria do not kill the Bacteria them. (a) bacteria are residant to the toxin (b) toxin is immature, © toxin is inactive, (d) bacteria encloses toxin in a special sac.
Answer» Solution :The Bt PROTEIN EXISTS as inactive protoxins but once an INSECT ingests the inactive toxin . It is CONVERTED into an active form of toxin due to the ALKALINE pH of the gut which solubilise the crystals.

Discussion

18818.	Question : Crystalline rocks are natural source of biogenetic element
Answer» CALCIUM PHOSPHORUS Magnesium Sodium Solution :The main source of phosphorus is ROCKS. Through erosion and WEATHERING phosphorus is MADE available in the soil.

Discussion

18819.	Question : Crypts of Lieberkuhn are found in between the villi. They secrete :-
Answer» Glucagon Succus entericus Insulin Secretin Answer :B

Discussion

18820.	Question : Chrysophyta, euglenoids, dinoflagellates and slime moulds are included in kingdom-
Answer» (a) PROTISTA (B) FUNGI (C) ANIMALIA (d) Monera Answer :A

Discussion

18821.	Question : Crypts of Leiberkuhn secretes:
Answer» SUCCUS entericus Gastric juice Bile juice Pancreatic juice Answer :A

Discussion

18822.	Question : Crypts of Leiberkuhn and Brunner's glands are found in the wall of_____.
Answer» STOMACH Oesophagus Ileum Duodenum Answer :D

Discussion

18823.	Question : cryptic appearance of an organism that appears similar to objects found in the surrounding environment to protect itself from predators is called
Answer» chemical cefence Camouflage ANTIBIOSIS Both (1) & (2) Answer :B

Discussion

18824.	Question : Cryptomerozoites are products of ...........
Answer» Sporogony in GUT WALL of mosquito host SCHIZOGONY in LIVER cells of man Schizogony in RBC.s of man Gametogony in the gut of mosquito SOLUTION :Schizogony in liver cells of man

Discussion

18825.	Question : Cryopreservation of gametes of threatened species in viable and fertile condition can be referred to as :
Answer» In SITU CONSERVATION of BIODIVERSITY ADVANCED ex-situ conservation of biodiversity In situ conservation by SACRED groves In situ cryo-conservation of biodiversity Solution :In situ cryoconservation of biodiversity

Discussion

18826.	Question : Cryopreservation means it is a process to preserve plant cells, tissues or organs
Answer» at very LOW TEMPERATURE by using ether at very high temperature by using liquid nitrogen at very low temperature of -196 by using liquid nitrogen at very low temperature by using liquid nitrogen Answer :C

Discussion

18827.	Question : CryllAb and crylAb produce toxins that control
Answer» cotton BOLLWORMS and corn BORER respectively corn borer and cotton bollworms respectively tabacco budworms and NEMATODES respectively nematodes and TOBACCO budworms respectively Answer :A

Discussion

18828.	Question : cryllAb and crylAb produce toxins that control
Answer» COTTON bollworms and corn borer RESPECTIVELY Corn borer and cotton bollworms respectively TOBACCO budworms and NEMATODES respectively Nematodes and tobacco budworms respectively ANSWER :A

Discussion

18829.	Question : Cry toxins obtained from Bacillus thuringiens is are effective against for ________
Answer» Mosquitoes Flies Nematodes Bollworms Answer :d

Discussion

18830.	Question : Cry-I endotoxins obtained from Bacillus thuringiensis are effective against
Answer» NEMATODES BOLLWORMS MOSQUITOES FLIES SOLUTION :bollworms

Discussion

18831.	Question : Cry I endotoxins obtained from Bacillus thuringiensis are effective against.
Answer» NEMATODES MOSQUITOES BOLLWORMS FLIES SOLUTION :Bollworms

Discussion

18832.	Question : Cry II Ab and Cry I Ab produce toxins that control
Answer» ANSWER :a

Discussion

18833.	Question : Cry endotoxins obtained from Bacillus thuriengensisare effective against
Answer» nematode bollworms mosquitoes flies Answer :B

Discussion

18834.	Question : cry 1 Ac - Controls cotton bollworms _____ - controls corn borer
Answer» SOLUTION :CRY 1 AB

Discussion

18835.	Question : Cry' genes are present in …………………..
Answer» AGROBACTERIUM tumifaciens Bacillus thuringiensis Rhizobium species Escherichia coli Answer :B

Discussion

18836.	Question : Cry 1 Ac and Cy 1 Ab encolsed proteins control……….. And ………..respectively.
Answer» Lepidoptera - Coleoptera CORN BORER - COTTON BOLL worms Cotton boll worms- corn borer Coleopetra - Lepidoptera Answer :B

Discussion

18837.	Question : Crustaceans, spiders and insects are able to regenerate their
Answer» Abdomen Thorax Head Limbs Answer :D

Discussion

18838.	Question : Crude birth rate and crude death rate of human population are calculated on
Answer» 7TH JANUARY 7th MARCH 7th JULY 31ST March Answer :C

Discussion

18839.	Question : Crura cerebri is found in _____ .
Answer» FORE BRAIN MIND brain Hind brain Spinal cord Answer :B

Discussion

18840.	Question : Crtoplasmic male sterlity in maize is due to defective
Answer» Mitochondria Lysosome Golgi body Leucoplast Answer :A

Discussion

18841.	Question :Crossing over takes place between which chromatids and in which stage of the cell cycle ?
Answer» Non-sister CHROMATIDS of non-HOMOLOGOUS chromosomes at ZYGOTENE stage of prophase I Non-sister chromatids of homologous chromosomes at PACHYTENE stage of prophase I Non-sister chromatids of homologous chromosomes at Zygotene stage of prophase I Non-sister chromatids of non-homologous chromosomes at Pachytene stage of prophase I Answer :C

Discussion

18842.	Question : Crossing over takes place in:
Answer» Diplotene Diakinesis Pachytene None of these Answer :C

Discussion

18843.	Question : Crossing over occurs only in germinal cells. Yes or no. Support your answer.
Answer» Solution :No. THOUGH CROSSING over is a common PROCESS in germinal cells RARELY it ALSO occurs in somatic crossing over.

Discussion

18844.	Question : Crossing over occurs in __________ stage of prophase - I of ____________ .
Answer» SOLUTION :PACHYTENE

Discussion

18845.	Question : Crossing over occurs between sister chromatids. True or False ?
Answer» ANSWER :FALSE

Discussion

18846.	Question : Crossing over occurs during ____ stage of meiosis.
Answer» PACHYTENE TETRAD metaphase-1 metaphase-II ANSWER :A

Discussion

18847.	Question : Crossing over occurs at the time of ………… .
Answer» diplotene pachytene leptotene zygotene Answer :B

Discussion

18848.	Question : Crossing over occurs at four-strand stage. This was proved by the observation that
Answer» USUALLY two gametes resulting from MEIOSIS are RECOMBINANTS All the four gametes resulting from meiosis are recombinants Chiasmata are SEEN only at four-strand stage Chiasmata are seen only at two-strand stage Answer :A

Discussion

18849.	Question : Crossing over may result in:
Answer» ADDITION of GENETIC material DELETION of genetic material Exchange of genetic material All of the above Answer :C

Discussion

18850.	Question : Crossing over is the exchange of genetic material between:
Answer» Non-sister CHROMATIDS of the HOMOLOGOUS chromosomes Sister chromatids of the homologous chromosomes Chromatids of non-homologous chromosome The GENE those are COMPLETELY linked Answer :a

Discussion

Explore topic-wise InterviewSolutions in .

Question : cultivation of crops is

Question : Cultivation of Bt cotton has bee much in the news. The prefix Bt means:

Question : Cucurbits are dioecious while date palm is monoecious. Why are they called so?

Question : Culex fatigan is a(A) Worm(B) Virus(C) Mosquito(D) Bacteria

Question : Cuckoo lays eggs in the nest of crow during breeding season. This is an example for

Question : Cu ions released from copper-releasing Intra Uterine Devices(IUDs)

Question : Cu ions released from copper-releasing intra uterine devices (IUDs)

Question : Cu ions released from copper-releasing Intra Uterine Devices (IUDs) :-

Question : Ctenophores exhibit

Question : Ctenophores are commonly known as ______

Question : CSF, which is formed from chorold plexes, enters the subarachnoid spacethrough

Question : Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because:

Question : Crystals of Bt toxin produced by Bacillus thuringiensis do not kill the bacteria themselves because.

Question : Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because(A) Bacteria are resistant to toxin(B) Toxin is immature(C) Toxin is inactive(D) Bacteria encloses toxin in special sac

Question : Crystals of Bt toxin produced by some bacteria do not kill the bacteria because

Question : Crystalline rocks are natural source of which of the by genetic element?

Question : Crystals of Bt toxin produced by some bacteria do not kill the Bacteria them. (a) bacteria are residant to the toxin (b) toxin is immature, © toxin is inactive, (d) bacteria encloses toxin in a special sac.

Question : Crystalline rocks are natural source of biogenetic element

Question : Crypts of Lieberkuhn are found in between the villi. They secrete :-

Question : Chrysophyta, euglenoids, dinoflagellates and slime moulds are included in kingdom-

Question : Crypts of Leiberkuhn secretes:

Question : Crypts of Leiberkuhn and Brunner's glands are found in the wall of_____.

Question : cryptic appearance of an organism that appears similar to objects found in the surrounding environment to protect itself from predators is called

Question : Cryptomerozoites are products of ...........

Question : Cryopreservation of gametes of threatened species in viable and fertile condition can be referred to as :

Question : Cryopreservation means it is a process to preserve plant cells, tissues or organs

Question : CryllAb and crylAb produce toxins that control

Question : cryllAb and crylAb produce toxins that control

Question : Cry toxins obtained from Bacillus thuringiens is are effective against for ________

Question : Cry-I endotoxins obtained from Bacillus thuringiensis are effective against

Question : Cry I endotoxins obtained from Bacillus thuringiensis are effective against.

Question : Cry II Ab and Cry I Ab produce toxins that control

Question : Cry endotoxins obtained from Bacillus thuriengensisare effective against

Question : cry 1 Ac - Controls cotton bollworms _____ - controls corn borer

Question : Cry' genes are present in …………………..

Question : Cry 1 Ac and Cy 1 Ab encolsed proteins control……….. And ………..respectively.

Question : Crustaceans, spiders and insects are able to regenerate their

Question : Crude birth rate and crude death rate of human population are calculated on

Question : Crura cerebri is found in _____ .

Question : Crtoplasmic male sterlity in maize is due to defective

Question :Crossing over takes place between which chromatids and in which stage of the cell cycle ?

Question : Crossing over takes place in:

Question : Crossing over occurs only in germinal cells. Yes or no. Support your answer.

Question : Crossing over occurs in __________ stage of prophase - I of ____________ .

Question : Crossing over occurs between sister chromatids. True or False ?

Question : Crossing over occurs during ____ stage of meiosis.

Question : Crossing over occurs at the time of ………… .

Question : Crossing over occurs at four-strand stage. This was proved by the observation that

Question : Crossing over may result in:

Question : Crossing over is the exchange of genetic material between:

Question : Crossing over occurs in stage of prophase - I of __ .