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9201.

Question : Reproductive isolation means

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INABILITY to INTERBREED
breedin isolation
ability to interbreed
BREEDING in a species

Answer :A
9202.

Question : Reproductive health refers only to healthy reproductive functions Comment.

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Solution :According to the world health organization (WHO) reproductive health means a total well being in all aspects of reproduction i.e. physical, emotional, BEHAVIORAL and SOCIAL.
THEREFORE a society with people having physically and functionally normal reproductive organs and 2 normal emotional and behavioral interactions among them in all sex related aspects might be called REPRODUCTIVELY HEALTHY.
9203.

Question : Reproductiveandchild Healthcare (RCH)programmers arecurrently inoperation . Oneof the majortasksof theseprogrammesis tocreate awareness amonngst peopleaboutthewiderangeof reproductionrelatedaspectsAs.Thisis importantandessentialfor building a reproducatively healthysociety . (a) '' Providing sex educationin schools in oneofthewaysto meet thisgoal.'' givefourpoints in suppoortof youropinoin regardingthisstatement. (b)listany two 'indicators' thatindicate a reproductively healthy society .

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Solution :the following arethereasonsto :
1.sex educaton inschoolsis imporanttoproviderightinformationand todispelmythsandmisconcenptionsaboutsex - RELATED aspects.
2.correctinformationaboutreproducative organs adolescaenceandrelated changes , safesexualpracticesand sexualhyguene helptheadolescentslead a healthy reproductivelife .
3.informationabout SEXUALLY transmitted diseases and HIV -AIDSis important for turningadolescentsintoresponsible adults .
4.Awereness of PROBLEMS due to uncontrolledpopulation growth , SOCIAL evils likesex-abuse and sex-related crimesetc. needsa healthy society.
9204.

Question : Reproductive Health

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Solution :(1)Maintaining health is ESSENTIAL aspect,especially for woman's health.REPRODUCTIVE health is sense of physicsal and mental well being in all matters relating to all parts of the reproductive system.(3)For maintaining reproductive health,the following care has to be taken:(i)Cleaning private parts regularly.
(ii)Observinggenital HYGIENE.
(iii)Avoiding risky behaviour that could cause SEXUALLY transmitted infections.
(iv)Access to relevent and scientific information about matters related to sexually.
(v)Availing reproductive health care and service,in CASE of difficulty and without any hesitation.
9205.

Question : Reproduction takes place by only sexual means in

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Ctenophora
Coelenterata
Porifera
Protozoa

Answer :A
9206.

Question : Reproduction without gametic union is called as.(A) Apomixis(B) Parthenogenesis(C) Plasmogamy(D) Apospory

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Apomixis
PARTHENOGENESIS
PLASMOGAMY
Apospory

ANSWER :B
9207.

Question : Reproduction is a biological process in which an organism gives rise to young ones (offspring similar to itself ) .An organism's method of reproduction depends upon factors:

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HABITAT
INTERNAL PHYSIOLOGY
GENETIC makeup
All of theabove

Answer :D
9208.

Question : Reproduction in Amoeba takes place by

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BINARY FISSION
Budding
Zoospore FORMATION
FRAGMENTATION

Answer :A
9209.

Question : Reproduction by zoospores is observed in

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CHLAMYDOMONAS
Yeast
PENICILLIUM
Marchantia

Solution :Vegetative propagule of GINGER is rhizome
9210.

Question : Reproduction

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Solution :Rep5roduction is a biological process in which an ORGANISM PRODUCES its own KIND.
9211.

Question : Reproducive isolation.

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Solution :REPRODUCTIVE isolation is DEFINED as the PHENOMENON by which two group of population are not ALLOWED to INTERBREED with each other.
9212.

Question : Repressor protein of Lac operon binds to ………………. of operon.

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(a) Promoter region
(B) OPERATOR region
(c) TERMINATOR region
(d) INDUCER region

Solution :Operator region
9213.

Question : Representation of age pyramids for human population is given below. Identify A, B and C by selecting the correct option:

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`{:(A,B,C),("Declining","STABLE","EXPANDING"):}`
`{:(A,B,C),("Stable","Expanding","Declining"):}`
`{:(A,B,C),("Expanding","Stable","Declining"):}`
`{:(A,B,C),("Stable","Declining","Expanding"):}`

Answer :C
9214.

Question : Represented below is the inheritance pattern of a certain typeof traits in human. Which one of the following conditions could be an example of this pattern?

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Haemophilia
Thalasemia
phenylketonuria
Sickle CELL anaemia

Answer :A
9215.

Question : Repressor protein is produced by

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REGULATOR gene
Operator gene
Structural gene
Promoter gene

Answer :A
9216.

Question : Represent schematically the life cell cycle of a malarial parasite .

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SOLUTION :
9217.

Question : Draw the phosphorus cycle

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SOLUTION :Natural RESERVOIRS of phosphorus is rocks which is in the form of phosphates.
Rocks weather and PHOSPHATE DISSOLVED in the soil are absorbed by the roots of plant.

Herbivorous and the other animals obtain the elements from PLANTS.
The waste products and dead organisms are decomposed by phosphates - solubilising bacteria releasing phosphorus.
9218.

Question : Represent pyramid of number in grassland ecosystem.

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SOLUTION :
9219.

Question : Represent pedigree analysis of X-linked recessive inheritance diagrammatically.

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SOLUTION :HAEMOPHILIA
9220.

Question : Represent an ideal pyramid of number in a grassland ecosystem

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Solution :The RELATIONSHIP between PRODUCERS and CONSUMERS in an ecosystem can be represented in the form of a PYRAMID in TERMS of number.
9221.

Question : Replication was allowed to take place in the presence of radioactive deoxynucleotides precursors in E.coli that was a mutant for DNA ligase. Newly synthesised radioactive DNA was purified and strands were separated by denaturation. These were centrifuged using density gradient centrifugation. Which of the following would be a correct result

Answer»




ANSWER :D
9222.

Question : Replum is present in the ovary of the flower of :

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SUN flower
Pea
Lemon
Mustard

Answer :D
9223.

Question : Replum is present in the ovary of flower of

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lemon
mustard
sunflower
PEA

Solution :(b) The gynoecium in family - CRUCIFERAE(Brassicaceae) is becarpellary, syncarpous, ovarysuperior, unilocular with pariental placetation. At maturity ovary becomes bilocular DUE to the formation of false septum (replum), e.g. mustard.In family-Asteraceae (Compositae) the gynoecium is becarpellary syncarpous, ovary inferior, unilocular, one ovulein each locule basal placentation and STIGMA branched, e.g. sunflower.InfamilyN-Fabaceae(Leguminosae)the gynoecium is monocarpellary,unilocular with superior ovary and marginal placentation, e.g. pea.
9224.

Question : Replication of DNA occurs at ………………..phase of cell cycle.

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(a) M
(b) S
(C) `G_(1)`
(d) `G_(2)`

SOLUTION :S
9225.

Question :Replication of DNA is in :

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3' to 5' direction
5' to 3' direction
Both 3' 5' and 5' 3' direction
None of the above

Answer :B
9226.

Question : Replication in the region of euchromatin would be faster. Justify.

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SOLUTION :EUCHROMATIN is transcriptionally ACTIVE CHROMATIN.
9227.

Question : Replacement of the lighter-coloured variety of peppered moth (Biston betularia) to its darker variety (Biston carbonaria) in England is the example of

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natural selection
regeneration
genetic isolation
temporal isolation.

Solution :In England before industrialisation in 1860, it was observed that there were more white-winged moths on tree TRUNKS than dark winged or melanised moths. But after industrilisation in 1920, there were more dark-winged moths in the same area, Before industrialisation, the tree trunks were covered nu white-winged moths survived but the dark winged moths were eaten by PREDATORS. During post industrialisation period. the tree trunnks became dark due to INDUSTRIAL smoke and soot. Therefore, the white winged moths could not survive due to predators but dark winged moths survived. i.e., the moths that were hidden in BACKGROUND survived. THUS. industrial melansim supports evolution by natural selection.
9228.

Question : Replacement of the lighter-coloured variety of peppered moth (Biston betularia) to its darker veriety (Biston carbonaria) in England is the example of

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NATURAL selection
regeneration
genetic isolation
temporal isolation

Answer :A
9229.

Question : Replacement of defective genes by transfer of functional genes.

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SOLUTION :GENE THERAPY.
9230.

Question : (i) Lizard is a continuous breeder. (ii) Asexual reproduction is also known as somatogenic reproduction (iii) In repeated fission, young ones do not separate till fission process is completed. (iv) Strobilation is a kind of longitudinal fission

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Solution :Yes. If multiple fission produces FOUR or many daughter individuals by EQUAL cell division and the YOUNG ONES do not separate until the process is complete, then this division is called repeated fission e.g. Vorticella.
9231.

Question : Repetitive DNA occurs in

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SATELLITE DNA
transposons
heteromeric REGION of Y chromosomne
all of the above

Answer :D
9232.

Question : Rennin acts on milk protein_______.

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ANSWER :CASEIN
9233.

Question : Renin is secreted from_____.

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juxtraglomerular cells
Lacis cell
Mesangial cells
Podocytes

Answer :A
9234.

Question : Renin used in cheese industry is:

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ANTIBIOTIC
Alkaloid
Enzyme
Inhibitor

Answer :C
9235.

Question : Renin is released from JGA in response to

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HIGH GLOMERULAR BLOOD pressure
Fall in glomerular blood flow
High GFR
Decrease in osmolarity

Answer :B
9236.

Question : Renal fluid present in the part of renal tubule which is impermeable to water but permeable to salts is

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HYPERTONIC to the MEDULLARY FLUID
Hypotonic to the medullary fluid
Isotonic to the cortical fluid
Hypertonic to BLOOD and isotonic to the cortical fluid

Answer :B
9237.

Question : Removal or absence of thymus in early life shall bring about

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LACK of LYMPHOCYTES
Lack of ANTIBODIES
Lack of LYMPH nodes
All of these

Solution :All of these
9238.

Question : Removal of which organ will have least effect in an adult Human :-

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Spleen
Liver
Pancreas
Pituitary

Answer :1
9239.

Question : Removal of which organ will have least effect in an adult human ?

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Spleen
Liver
Pancreas
Pituitary

Answer :A
9240.

Question : Removal of stamens flower before the anthers mature ?

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ANSWER :EMASCULATION
9241.

Question : Removal of RNA polymerase III from nulceoplasm will affect the synthesis of

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HN RNA
m RNA
r RNA
t RNA

Answer :D
9242.

Question : Removal of RNA polymerase III from nucleoplasm will affect the synthesis of

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tRNA
hnRNA
mRNA
rRNA

Answer :A
9243.

Question : Removal of RNA polymerase III from nucleo-plasm will affect the synthesis of

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HN RNA
m RNA
r RNA
t RNA

Answer :D
9244.

Question :Removal of large pieces of floating debris . oily substances , etc , during sewage treatment called ……………

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PRIMARY TREATMENT
SECONDARY treatment
FINAL treatment
Amplification

Answer :A
9245.

Question : Removal of introns and joining of exons in a defined order during transcription is called

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inducing
slicing
splicing
looping

Answer :C
9246.

Question :Removal of introns and joining the exons in a definite order in a transcription unit is called :

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ANSWER :SPLICING
9247.

Question : Removal of immature anther from flower bud of bisexual parent.

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SOLUTION :MEGASPOROGENESIS
9248.

Question : Removal of anthers of some flowers during plant breeding is

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emasculation
anthesis
pollination
for COLLECTION of pollen

Answer :A
9249.

Question : Removal of gonads cannot be considered as contraceptive option. Why?

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Solution :Contraception is meant for preventing conceptions and not AFFECTING body FUNCTIONS including appearance and physiology . Removal of gonads will result in non-secretion of SEX hormones. This will ALTER their sexual CHARACTERS.
9250.

Question :Removal of gonads cannot be considered as a contraceptive option. Why?

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Solution :Its reason is that ideal contraceptive should be : (i) User friendly (ii) Without any side effect (ii) It should in no way interfere with the sexual DRIVE, DESIRE or the sexual act of the user.
When reproductive organs are removed, then BASIC FUNCTIONS of reproductive system like secretion of hormones, formation of gamete cell do not occur.