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9301.

Question : Refer to the given figure what does it represent?

Answer»

Convergent evolution
ADAPTIVE RADIATION
Atavism
Both b and c

Solution :The PROCESS of evolution of different species in a given geographical area starting from a point and LITERALLY radiating to other AREAS of geography (habitats) is called adaptive radiation.
Discussion
9302.

Question : Refer to the given figure showing different zones in a deep lake. In which zone of the lake, produces occur throughout from surface to bottom ?

Answer»

B and C
C and D
A and B
None of these

Answer :C
Discussion
9303.

Question : Refer to the given figure The organisms in the given figure represent

Answer»

DIVERGENT EVOLUTION
convergent evolution
connecting links
recapitulation.

SOLUTION :Placental mammals and AUSTRALIAN marsupials EXHIBIT convergent evolution.
Discussion
9304.

Question : Refer to the given figure. The given figures represents that.

Answer»

the SKULL of baby chimpanzee is more like adult HUMAN skull
the bay chimpanzee did not have TEETH whereas humans do
suturesare PRESENT on the skull of adult human whereas in chimpanzee it is a SINGLE bone.
both a and c.

Solution :N//A
Discussion
9305.

Question : Refer to the given figure Select the option which identifies polarityX and Yand DNA sequencecoding for serine (P) and the anticodon for the same amino acid (Q).

Answer»

<P>`{:(X,Y,P,Q),(3',5',TCA,UCA):}`
`{:(X,Y,P,Q),(5',3',UUG,TCA):}`
`{:(X,Y,P,Q),(3',5',UCA,TCA):}`
`{:(X,Y,P,Q),(5',3',TCA,UCA):}`

ANSWER :d
Discussion
9306.

Question : Refer to the given figure representing different zones of a biosphere reserve. Choose the correct answer as per the statements given below (i) Lmited human activity is allowedsuch as for research and education. (ii) An active co-operation occurs between reserve management and local people for activities like cropping, settlements, etc. (iii) No human activity is allowed.

Answer»

`{:((i),(ii),(ii),),(A,B,C,):}`
`{:((i),(ii),(ii),),(B,C,A,):}`
`{:((i),(ii),(ii),),(C,A,B,):}`
`{:((i),(ii),(ii),),(C,B,A,):}`

Solution :`A""-` Core area
`B""-` Buffer ZONE
`C""-` TRANSITION zone
Discussion
9307.

Question : Refer to the given figure representing karyotype of individual who inflicted with this chromosomal disorder Selectthe correct statementregarding them.

Answer»

This DISORDER occurs due tofailure of SEGREGATION of CHROMATIDS during CELLDIVISION cycle results in the gain of chromosome
This disorderoccurs due tofailure of cytokinesis after telophase stage of cell division results in an increases in whole set of chromosome
Individuals inflicted with this disorder are usuallysterile
Both (a) and (c)

Answer :A
Discussion
9308.

Question : Refer to the given figure and select the correct option regarding X,Y and Z.

Answer»

`{:(X,Y,Z),("Brachioaurus","Archaeopteryx","TRICERATOPS"):}`
`{:(X,Y,Z),("Archaeopteryx","Tryannosaurus","Pteranodon"):}`
`{:(X,Y,Z),("Archaeopteryx","Stgosaurus","Tryrannosaurus"):}`
`{:(X,Y,Z),("Archaeopteryx","BRACHIOSAURUS","Triceratops"):}`

SOLUTION :N//A
Discussion
9309.

Question : Refer to the given figure and select the correct option regarding it.

Answer»

<P>`{:(P,Q,R,S),("Chlorophyte ancestors","Tracheophyte ancestors","Rhynia-type PLANTS","Psilophyton"):}`
`{:(P,Q,R,S),("Tracheophyte ancestors","Rhynia type plants","Chrolophyte ancestors","Psilophyton"):}`
`{:(P,Q,R,S),("Chlorophyte ancestors","Tracheophyte ancestors","Psilophyton","Rhynia-type plants"):}`
`{:(P,Q,R,S),("Chlorophyte ancestors","Rhynia-type plants","Traceophyte ancestors","Psilophyton"):}`

Solution :N//A
Discussion
9310.

Question : Refer to the given figure and identify the parts labelled P,Q,R and S.

Answer»

`{:(P,Q,R,S),("SEED","THALAMUS","Mesocarp","Endocarp"):}`
`{:(P,Q,R,S),("Thalamus","Seed","Endocarp","Mesocarp"):}`
`{:(P,Q,R,S),("Seed","Thalamus","Endocarp","Mesocarp"):}`
`{:(P,Q,R,S),("Pericap","Seed","Mesocarp","Endocarp"):}`

Solution :The given figure is of false fruit of apple. Here P,Q,R and S are thalamus, seed, endocarp and mesocarp, RESPECTIVELY.
Discussion
9311.

Question : Refer to the given family tree and answer the question If A= normal allele, a = albino allele, then genotypes of father and mother are respectively

Answer»

Aa and Aa
AA and Aa
Aa and AA
Aa and aa

Solution :ALBINISM is hereditary lack of pigmentation in an organism.It is an AUTOSOMAL recessive disorder. Albino humans lack dark pigment melanin in their skin, hair or eyes. The allele responsible is recessive to allele for normal pigmentation. Father's and MOTHER's genotype should be Aa. They both are carriers of the disease

The CHANCES of this couple'f FIFTH child being an albino are 1 in 4.
Discussion
9312.

Question : Refer to the given figure

Answer»

`{:(K,L,M,N),(5' end,"Phosphodiester bond","THYMINE","Ribose sugar"):}`
`{:(K,L,M,N),(3' end,"Glycosidicbond","GUANINE","Deoxyribose sugar"):}`
`{:(K,L,M,N),(5' end,"Hydrogenbond","Adenine","Ribose sugar"):}`
`{:(K,L,M,N),(5' end,"Hydrogenbond","Adenine","Deoxyribose sugar"):}`

Solution :(d)
Discussion
9313.

Question : Refer to the given diagram. What does it represent ?

Answer»

TRANSCRIPTION in prokaryotes
Transcription in eukaryotes
Translation in prokaryotes
Translation in eukaryotes

Solution :(b) : The given diagram REPRESENTS post-transcriptional processingresulting in the formation of MRNA . Since, introns and exons are present m it is trsanscription in eukaryotes.
Discussion
9314.

Question : Refer to the figures of skull given below and indentify the one which has evolved recently.

Answer»




ANSWER :D
Discussion
9315.

Question : Refer to the diagram and answer the following questions:(a) From which is T1 plasmid obtained? (b) Name the enzyme which is involved in step I. (c) What happens in step III? (d) The plant produced is called hybrid or transgenic.

Answer»

Solution :(a) Agrobacteriunl 1ll1nefaciens, (b) Restriction elldonuclease, (c) INCORPORATION of gene in `T_i` PLASMID DNA, (d) Transgenic, (E) Yes, selectable marker gene which is OFTEN an antibiotic-resistant gene and GENES present on plasmid DNA
Discussion
9316.

Question : Refer the given statements and select the correct one (i) Fossils are remains of hard parts of life forms in Rocks (ii) A study of fossils in different sedimentary layers indicates the geological period in which they live . (iii) Radio isotopen are often used to determine the age of the fossils (iv) Study of fossils is called paleontology

Answer»

(i),(II),(III) and (IV)
(ii) and (iv)
(i) , (iii) and (iv)
NONE of these

Answer :A
Discussion
9317.

Question : Refer the given reaction. C_12 H_22 O_11 + H_2O overset(Enzyme)(to) 2C_6H_12O_6 Enzyme A used in the reaction, belongs to which class of enzymes ?

Answer»

DEHYDROGENASES
TRANSFERASES
Hydrolases
Lyases

Answer :C
Discussion
9318.

Question : Refer the given figure of nucleosome and select the option that correctlyidentifies the parts A,B and C.

Answer»

`{:(A,B,C,),("DNA"," Histone octamer",H_(1)"histone", ),(,,,):}`
`{:(A,B,C,),("Histone octamer",H_(1)"histone",DNA, ),(,,,):}`
`{:(A,B,C,),("Histone octamer",DNA,H_(1)"histone", ),(,,,):}`
`{:(A,B,C,),(DNA,H_(1)"histone","Histone octamer" ,),(,,,):}`

Solution :(c) : In eukaryotes, DNA organisation is COMPLEX. There is a set of POSITIVELY changed, basic porteins called histones. Histones are rich in the basic aminoacid residues lysine and arginine. There are five types of histone proteins-`H_(1),H_(2)A,H_(2)B, H_(3) and H_(4)`. Four of them`(H_(2)A, H_(2)B, H_(3) and H_(4))` produce histone octamer called nu body or core of nucleosome . The negatively CHARGED DNA is wrapped around the positively charged histone octamer to form nucleosome. DNA CONNECTING two adjacent NUCLEOSOMES is called linker DNA which bears `H_(1)` histone proteins.
Discussion
9319.

Question : Identify the labelled parts of following diagram

Answer»

`{:(X,Y,Z),("DARK reaction","LIGHT reaction " ,"Cytoplasmic inheritance"):}`
`{:(X,Y,Z),("Light reaction","CARBOHYDRATE SYNTHESIS" ,"Carbohydrate storage"):}`
`{:(X,Y,Z),("Light reaction","Carbohydrate synthesis" ,"Carbohydrate storage"):}`
`{:(X,Y,Z),(" Carbohydrate synthesis" ,"Carbohydrate storage", "Cytoplasmic inheritance"):}`

Answer :B
Discussion
9320.

Question : Refer the figures A , B , C and D given below. Which of the following option shows the correct name of the animals shown by the figures A , B, C and D ?

Answer»

A – Locusta, B – BUTTERFLY, C – scorpion, D – Prawn
A– Locusta, B – Prawn, C – Scorpion, D – Butterfly
A – Locusta, B – Scorpion, C – Prawn, D – Butterfly
A – Butterfly, B – Scorpion, C – Prawn, D – locusta

Answer :A
Discussion
9321.

Question : Reduction in vascular tissue ,mechanical tissue and cuticle is characteristic of :

Answer»

MESOPHYTES
Epiphytes
Hydrophyte
Xerophytes

Answer :C
Discussion
9322.

Question : Reduction in blood pH will

Answer»

REDUCE the rate of heart beat
Reduce the blood supply to the brain
Decrease the affinity of HAEMOGLOBIN with OXYGEN
Release bicarbonate ions by the liver

Answer :C
Discussion
9323.

Question : Reduction division in angiosperm occurs at the time of ?

Answer»

ASEXUAL reproduction
Apomixis reproduction
Vegetative reproduction
Microspore and MEGASPORE formation

Answer :D
Discussion
9324.

Question : Red(RR) Antirrhinum is crossed with white (rr) one. The F_1 hybrid is pink. This an example of _____.

Answer»

COMPLETE DOMINANCE
Codominance
incomplete dominance
complete recessive

Answer :C
Discussion
9325.

Question : Red tide is caused by an organism which closely by a organism which structures ?

Answer»




ANSWER :A
Discussion
9326.

Question : Red tide is caused due to

Answer»

Trichodesmium
Gonyaulax
Chlamydomonas
Desmid

Answer :B
Discussion
9327.

Question : Red tide is caused by :-

Answer»

DIATOMS
Slime MOULDS
BGA
Dinoflagellates

Answer :A
Discussion
9328.

Question : Red tide in oceans is caused by rapid multiplication of :-

Answer»

BGA
Rhodophyceae
Diatoms
Dinoflagellate

Answer :D
Discussion
9329.

Question :Red ( RR ) Antirrhinum is crossed with white ( rr ) one . The F_1 hybrid is pink . This is an example of :

Answer»

COMPLETE dominance
Co - dominance
Incomplete dominance
Complete recessive

Answer :C
Discussion
9330.

Question : Red rot of sugarcane and white rust of radish are respectively caused by

Answer»

ALBUGO CANDIDA and Cercospora
Colletotrichum and Fusarium
Pythium and Phytophthora
Colletotrichum and Albugo candida

Answer :D
Discussion
9331.

Question : Red muscle fibres can be distinguished from white muscle fibres as the former have

Answer»

LESS amount of mitochondria
Fast rate of CONTRACTION for SHORT period
Less sarcoplasmic reticulum
Anaerobic RESPIRATION as main mode of ATP generation

Answer :C
Discussion
9332.

Question : Red muscle is red due to presence of______.

Answer»


ANSWER :MYOGLOBIN
Discussion
9333.

Question : Red list contains data or information on

Answer»

Threatened species
Marine VERTEBRATES only
All economically important plants
Plants whose PRODUCTS are in international trade

SOLUTION :Threatened species
Discussion
9334.

Question : Red far-red reversible photoreaction was first observed by

Answer»

Butler
Garner
Allard
Borthurck

ANSWER :A
Discussion
9335.

Question : Red eyed female Drosophila is crossed with white eyed male. If this cross results in 50% progeny being red eyed, we can say that -

Answer»

Both PARENTS were hemizygous
Female PARENT was heterozygous
Female parent was pure
Both parents were pure

Answer :B
Discussion
9336.

Question :Red drop is due to

Answer»

Decline in QUANTUM yield in SEPARATE beams of red light
Non functioning of PS II in free red light
Inhibiting EFFECT of Red light on PS I
Oxidation of CHLOROPHYLL

Answer :B
Discussion
9337.

Question : Red drop occurs in wavelength of

Answer»

495 nm
690 nm
560 nm
586 nm

ANSWER :B
Discussion
9338.

Question : Red data books are produced by :

Answer»

IUCN
WWF
IBWL
None of the above

Answer :A
Discussion
9339.

Question : Red ( dominant) flowered heterozygous crossed with white flower:

Answer»

`350-red: 350 ~WHITE`
`450-red:250~white`
`380-red : 250~white`
NONE of the above

Answer :A
Discussion
9340.

Question :'Red data book' - What do you know about it ?

Answer»

Solution :Red Data book or Red LIST is a catalogue of TAXA facing risk of extinction. IUCN - International Union of Conservation of Nature and Natural Resources, which is RENAMED as WCU - World Conservation Union (Morges SWITZERLAND) maintains the Red Data book. The concept of Red list was mooted in 1963. The purpose of perparation of Red List are :
• To create awareness on the degree of threat to biodiversity
• Identification and documentation of species at high risk of extinction
• Provide global index on DECLINING biodiversity
• Preparing conservation priorities and help in conservation of action
• Information on international agreements on conservation of biological diversity Red line has eight categories of species.
(i) Extinct(ii) Extinct in wild(iii) Criticallt Endangered(iv) Endangered(v)Vulnerable(vi)Lower risk(vii) Data deficiency(viii) Not evaluated.
Discussion
9341.

Question : Red Data Book or IUCN Red List provides data on

Answer»

BIOTA of RED Sea
Effect of red LIGHT or photosynthesis
Red pigmented plants
Threatened species

Answer :D
Discussion
9342.

Question : Reddatabook providesdata on

Answer»

RED floweredplaints
red coluredfishes
ENDANGERED plantsandanimals
red coloured INSECTS

Answer :c
Discussion
9343.

Question : Red Data Book deals with

Answer»

ORGANISMS on the verge of EXTINCTION
endemic plants
oragnisms showing photoperiodism
organisms that are extinct

Solution :Red Data book is a catalogue of taxa facing RISK of extinction. It is MAINTAINED by IUCN.
Discussion
9344.

Question : Red data book deals with :

Answer»

ENDEMIC plants
Extinct plants
Animal on VERGE of extinction
monozygotic twin

Answer :C
Discussion
9345.

Question : Red algae differ from the brown algae in having :-

Answer»

CHLOROPHYLL 'a
Aquatic nature
Cellulosic CELL wall
Reproduce SEXUALLY by non-motile gametes

Answer :D
Discussion
9346.

Question : Recyclable solid waste : Paper, glass :: Inert waste:(A) Kitchen waste(B) Green waste(C) Cans(D) Dirt, rocks

Answer»

KITCHEN waste
Green waste
Cans
Dirt, rocks

Answer :D
Discussion
9347.

Question : Recombination nodule is seen in stage

Answer»

Zygotene
Pachytene
Diakinesis
Leptotene

Answer :B
Discussion
9348.

Question : Recombination frequency (RF) is equal to

Answer»

a) `("No. of OFFSPRINGS")/("No. of recombinants")XX100`
B) `("No. of recombinants")/("No. of PARENTAL strains")xx100`
c) `("No. of recombinants")/("No. of offsprings")xx100`
d) `("No. of offsprings")/("No. of parental strains")xx100`

Answer :C
Discussion
9349.

Question : Recombinant DNA-techology is of great important in the field of medicine. With the help of a flow chart , show how this techonology has been used in preparing genetically engineered human insulins

Answer»

SOLUTION :PREPARATION of HUMAN INSULIN USING Recobinant DNA-Techonology.
Discussion
9350.

Question : Recombinant vaccines are better than conventional ones - Justify.

Answer»

Solution :The RECOMBINANT VACCINES are generally of uniform quality and produce LESS side effects as compared to the vaccines produced by CONVENTIONAL METHODS.
Discussion