24277 + Interview Questions in Biology in Class 12 Page 146 InterviewSolution

7251.	Question : Synthesis of chlorophyll and cytochrome system is affected by deficiency of :
Answer» FE N P B Answer :A

Discussion

7252.	Question : The arms attain their proportionate size in human beings at
Answer» SOON after birth Age of TWO YEARS Ten years of age Fourteen years of age Answer :A

Discussion

7253.	Question : Synseeds are developed by encapsulating embryoids with……………
Answer» SODIUM chloride Potassium iodide Sodium alginate Potassium DICHROMATE ANSWER :C

Discussion

7254.	Question : The ……….. Are responsible for photopic vision.
Answer» cones rods lens retina Answer :A

Discussion

7255.	Question : Syngenious condition is found in
Answer» Asteraceae Labiatae Solanaceae Fabaceae Answer :A

Discussion

7256.	Question : The Arctic tern is a bird which travels from the Arctic to the Antarctic region and then back again. Hence it sees two summers in a year. On an averge, Arctic terns travel a distance of 70,000 km annually. This is an example of
Answer» CONFORMATION Regulation Migration Suspension Answer :C

Discussion

7257.	Question : Syngamy means.
Answer» The FUSION of CYTOPLASM of spores Delayed meiosis Delayed mitosis The fusion of MALE and FEMALE gametes Answer :D

Discussion

7258.	Question : The aquatic organisms that can actively swim at will against the water current is:
Answer» Neuston Nekton Plankton Benthos Answer :B

Discussion

7259.	Question : Syngamy results in formation of a diploid gamete.
Answer» ANSWER :ZYGOTE

Discussion

7260.	Question : The approximate distance between the adjacent base pair is
Answer» 0.34 nm 3.4nm 340nm .034nm Answer :A

Discussion

7261.	Question : The approach which does not give the defined action of contraceptive is
Answer» SOLUTION :VASECTOMY - PREVENTS SPERMATOGENESIS

Discussion

7262.	Question : The aperturs inexineare called ______.
Answer» SOLUTION :GERMPORES

Discussion

7263.	Question : Syngamy means:
Answer» FUSION of SIMILAR SPORES Fusion of DISSIMILAR spores Fusion of cytoplasm Fusion of gametes Answer :A

Discussion

7264.	Question : The aperture controlling the light entering in eye is called :
Answer» Iris PUPIL BLIND SPOT Sclerotic layer Answer :B

Discussion

7265.	Question : Syngamy is the fusion of gametes to produce zygotes. But in some organ-isms like rotifers, honey bees and even some lizards, syngamy doesn't occur. Then how do these organisms produce young ones? Name the phenomenon.
Answer» Solution :In these organisms, the female gamete UNDERGOES development to FORM NEW ORGANISM without fertilization. This phenomenon is called partheno-genesis.

Discussion

7266.	Question : Synergids have special cellular thickening at micropylar tip. Write the name and function of this structure.
Answer» SOLUTION :Filliform APPARATUS. GUIDING POLLENTUBE into the SYNERGIDS

Discussion

7267.	Question : The aperture suuround by the iris is called
Answer» PUPIL RETINA CORNEA SCLERA ANSWER :A

Discussion

7268.	Question : Synergids are of which type?
Answer» Diploid Triploid Haploid Tetraploid Answer :C

Discussion

7269.	Question : The antigen present in pathogen is
Answer» A specific PROTEIN involved in metabolism Polysaccharide SYNTHESISED by it in the host A specific protein or polysaccharide PRESENT on its coat Any of thetwo A or B Answer :C

Discussion

7270.	Question : The antibodies anti A and anti B are
Answer» IG G TYPE PRESENT in plasma Ig A type present on RBC Ig M type present in plasma Ig G type present on RBC Answer :C

Discussion

7271.	Question : Syngamy can occur outside the body of organisms in
Answer» ALGAE Ferns Fungi Mosses Answer :A

Discussion

7272.	Question :The antibodies produced as immune response to allergens come under
Answer» IgE IgA IgM IgG Answer :A

Discussion

7273.	Question : Synergide are :
Answer» Hexaploid Haploid Diploid Triploid Answer :B

Discussion

7274.	Question : Synaptonemal complex between homologous chromosomes is dissolved in which stage of meiosis ?
Answer» Diplotene Diakinesis Pachytene Leptotene Answer :A

Discussion

7275.	Question : The antibodies have no effect on viruses because
Answer» they kill all BACTERIA, which act as host of virus viruses are too small in size for antibiotics to act UPON them viruses show no metabolism of their own viruses PRODUCE a thick covering and ENCYST themselves as endospores Answer :C

Discussion

7276.	Question : Synecology is the study of :
Answer» Biosphere Individual ENVIRONMENT COMMUNITY in RELATION to environment Answer :D

Discussion

7277.	Question : The antibiotics used inlederberg's replica plating experiment was
Answer» Penicillin Streptomycin Erythromycin Neomycin Answer :A

Discussion

7278.	Question : Synaptonemal complexes are formed in :-
Answer» Zygotene Leptotene Diplotene Pachytene Answer :A

Discussion

7279.	Question : The antibiotics obtained from Streptomyces are:
Answer» CHLORAMPHENICOL, Erythromycin Leucomycin, Neomycin Novobiocin, Spiramycin All of these Answer :D

Discussion

7280.	Question : Synecology is study of
Answer» human environment of a place BIOTIC environment of a place abiotic COMPONENT of a place biotic COMMUNITY in relation to environment of a place Answer :D

Discussion

7281.	Question : Synaptic delay last for:
Answer» 0.1 MS 0.3 ms 0.4 ms 0.5 ms Answer :D

Discussion

7282.	Question : The antibiotic Streptomyces aureofaciens helps in the treatment of
Answer» typhoid gonorrhoea eye infections urinary infections Answer :C

Discussion

7283.	Question : The antibiotic chloromycetin is obtained from …….. .
Answer» Sclerotiana libertine Aspergillus niger Streptomyces griseus Streptomyces venezuelae Answer :D

Discussion

7284.	Question : Synaptonemal complex is associated with:
Answer» Bivalents Mitotic chromosomes Complex CHROMOSOME Rearrangement Nucleosome Answer :A

Discussion

7285.	Question : Synapsis occurs between:
Answer» m-RNA and ribosomes Spindle FIBRES and cetromere Two HOMOLOGOUS chromosomes A MALE and a FEMALE gamete Answer :C

Discussion

7286.	Question : The antherozoids of Funaria are
Answer» aciliated biflagellated multiciliated monociliated Solution :(b) The antherozoids of Funaria are spirally coiled and BEAR TWO EQUAL flagella at ANTERIOR end.

Discussion

7287.	Question : The antennae of cockroach has receptors for
Answer» TACTILE and olfactory Only olfactory Gustatory Only tactile Answer :A

Discussion

7288.	Question : Symptoms of manganese toxicity are
Answer» BROWN SPOTS SURROUNDED by CHLOROTIC veins Delayed FLOWERING Synthesis of middle lamella White bud Answer :A

Discussion

7289.	Question : Symplstic movement may be aided by sytoplasmic streaming
Answer» ANSWER :1

Discussion

7290.	Question : The annual variations temperature results distinct seasons,these variations togather with anuual variation in percipitations leads to
Answer» RAIN forest deserts lake both a and b Answer :D

Discussion

7291.	Question : Sympatric speciation occurs most commonly in
Answer» mammals fishes plants birds Answer :C

Discussion

7292.	Question : The annual NPP of the whole blosphere is how much billion tons of organic matter?
Answer» 120 170 210 150 Solution :170

Discussion

7293.	Question : Sympatric speciation is caused by:
Answer» GENETIC isolation Interbreeding Geographic isolation Reproductive isolation Answer :D

Discussion

7294.	Question : The annual net primary productivity of the whole biosphere is approximately……. (dry weight ) of organic matter.
Answer» 190 billion TONS 150 billion tons 170 BILLIONS tons 210 billions Answer :C

Discussion

7295.	Question : Sympathetic nervous system.
Answer» Solution :(1)Sympathetic NERVOUS system is formed by 22 pairs of sympathetic ganglia.these gangila are LINEARLY arranged on two sympathetic cords.Sympathetic nerve cords run on either side of the vertebral column.(2)Sympathetic nerve cords are connected to CNS by ramicommunicans of spinal nerve fibres.(3)This system works during stress,pain,anger,fear,or emergency.It is supposed to bring about fight,flight reactions.(4)Action of sympathetic nervous system is DEPENDENT on adenaline or noradrenaline.This NEUROTRANSMITTER is secreted by symathetic nervous system as an emergency HORMONE.

Discussion

7296.	Question : The animals with bilateral symmetry in young stage and radial pentamerous symmetry in the adult stage, belong to the phylum -
Answer» Mollusca Cnidaria Echinodermata Annelida Answer :C

Discussion

7297.	Question : Sympathetic nerve endings release non-adrenaline which leads to
Answer» Increase in rate of HEART beat DECREASE in speed of conduction of action POTENTIAL through heart musculature Decrease in CARDIAC output and STROKE volume Increase in stroke volume but decrease in cardiac output Answer :A

Discussion

7298.	Question : The animals of cold countries have relatively shorter and not fully developed ear, eyes, hair and other phenotypic characters. This is known as:
Answer» ALLEN's law Cope's law Dollo's law Bergman's law Answer :A

Discussion

7299.	Question : Sympathetic division is differentiated from parasympathetic division in all except :-
Answer» STIMULATE ADRENAL medulla Preganglionic is SMALLER than postganglionic nerve fiber Always excitatory in nature Has PAIRED chain of ganglia Answer :C

Discussion

7300.	Question : The animal starch.
Answer» ANSWER :GLYCOGEN

Discussion

Explore topic-wise InterviewSolutions in .

Question : Synthesis of chlorophyll and cytochrome system is affected by deficiency of :

Question : The arms attain their proportionate size in human beings at

Question : Synseeds are developed by encapsulating embryoids with……………

Question : The ……….. Are responsible for photopic vision.

Question : Syngenious condition is found in

Question : The Arctic tern is a bird which travels from the Arctic to the Antarctic region and then back again. Hence it sees two summers in a year. On an averge, Arctic terns travel a distance of 70,000 km annually. This is an example of

Question : Syngamy means.

Question : The aquatic organisms that can actively swim at will against the water current is:

Question : Syngamy results in formation of a diploid gamete.

Question : The approximate distance between the adjacent base pair is

Question : The approach which does not give the defined action of contraceptive is

Question : The aperturs inexineare called ______.

Question : Syngamy means:

Question : The aperture controlling the light entering in eye is called :

Question : Syngamy is the fusion of gametes to produce zygotes. But in some organ-isms like rotifers, honey bees and even some lizards, syngamy doesn't occur. Then how do these organisms produce young ones? Name the phenomenon.

Question : Synergids have special cellular thickening at micropylar tip. Write the name and function of this structure.

Question : The aperture suuround by the iris is called

Question : Synergids are of which type?

Question : The antigen present in pathogen is

Question : The antibodies anti A and anti B are

Question : Syngamy can occur outside the body of organisms in

Question :The antibodies produced as immune response to allergens come under

Question : Synergide are :

Question : Synaptonemal complex between homologous chromosomes is dissolved in which stage of meiosis ?

Question : The antibodies have no effect on viruses because

Question : Synecology is the study of :

Question : The antibiotics used inlederberg's replica plating experiment was

Question : Synaptonemal complexes are formed in :-

Question : The antibiotics obtained from Streptomyces are:

Question : Synecology is study of

Question : Synaptic delay last for:

Question : The antibiotic Streptomyces aureofaciens helps in the treatment of

Question : The antibiotic chloromycetin is obtained from …….. .

Question : Synaptonemal complex is associated with:

Question : Synapsis occurs between:

Question : The antherozoids of Funaria are

Question : The antennae of cockroach has receptors for

Question : Symptoms of manganese toxicity are

Question : Symplstic movement may be aided by sytoplasmic streaming

Question : The annual variations temperature results distinct seasons,these variations togather with anuual variation in percipitations leads to

Question : Sympatric speciation occurs most commonly in

Question : The annual NPP of the whole blosphere is how much billion tons of organic matter?

Question : Sympatric speciation is caused by:

Question : The annual net primary productivity of the whole biosphere is approximately……. (dry weight ) of organic matter.

Question : Sympathetic nervous system.

Question : The animals with bilateral symmetry in young stage and radial pentamerous symmetry in the adult stage, belong to the phylum -

Question : Sympathetic nerve endings release non-adrenaline which leads to

Question : The animals of cold countries have relatively shorter and not fully developed ear, eyes, hair and other phenotypic characters. This is known as:

Question : Sympathetic division is differentiated from parasympathetic division in all except :-

Question : The animal starch.