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19201.

Question : Complete the table using suitable term. _______trisomy 21

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SOLUTION :Down.s SYNDROME
Discussion
19202.

Question : Complete the table using suitable term Turner's syndrome . _______ Sterile female

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SOLUTION :44 A + XO
Discussion
19203.

Question : Complete the table using suitable term . _______ 44 A + xxy

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SOLUTION :Klinefelter.s SYNDROME
Discussion
19204.

Question : Complete the table using suitable term Turner's syndrome . _______

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SOLUTION :STERILE MALE
Discussion
19205.

Question : Complete the table by filling the gaps.

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SOLUTION :A- NEISSERIA Gonorrhoea
B - AIDS
C- Jaundice
Discussion
19206.

Question : Complete the table.

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SOLUTION :A-Only MALES , B - Only FEMALES , C- Both Males & Females
Discussion
19207.

Question : Complete the statements. (a) Alphonsa is a variety of ____________ . (b) Cayenne pepper is a variety of __________.

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SOLUTION :(a) MANGO
(B) CAPSICUM
Discussion
19208.

Question : Complete the molecular processes by naming them (a) DNA → DNA (b) mRNA→Protein ( c )RNA transcript → mRNA

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Solution :(a) Replication
(b) TRANSLATION
( C )SPLICING
Discussion
19209.

Question : Complete the food chain by filling the link X: Paddy rarr Grasshopper rarr Frog rarr X rarr Hawk

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KING cobra
Gorilla
Rabbit
Tasmanial wolf

Answer :A
Discussion
19210.

Question : Complete the following, the name of scientists and their area in biodiversity conservation is given.

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SOLUTION :a. Edward Wilson
b. GLOBAL SPECIES diversity
c. Alaxander von HUMBOLDT
d. Rivet POPPER hypothesis
Discussion
19211.

Question : Complete the following sentence using the appropriate option. X is the term popularized by Y , a Z to describe combined diversity at all the levels of biological organization.

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X - ECOSYSTEM , Y - ALEXANDER von Humboldt , Z - Geologist
X - BIODIVERSITY , Y - EDWARD Wilson , Z - Sociobiologist .
X - Ecosystem , Y - ROBERT May , Z - Environmentalist
X - Ecology , Y - Gause , Z - Ecologist

Answer :B
Discussion
19212.

Question : Complete the following paragraph by selecting the corrects sequence of words from the options given below The Neanderthal man with a brain size of I lived near East and Central ii between iii years back. They used iv to protect their body and buried theri dead.

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`{:("(i)","(ii)","(iii)","(iv)"),(500c.c.,"Australia","2,00,000-1,40,000","CLOTHES"):}`
`{:("(i)","(ii)","(iii)","(iv)"),(500c.c.,"Africa","40,000-8,000","twigs"):}`
`{:("(i)","(ii)","(iii)","(iv)"),(1400 c.c.,"Asia","1,00,000-40,000","hides"):}`
`{:("(i)","(ii)","(iii)","(iv)"),(650 c.c.,"Africa","75,000-10,000","leaves"):}`

SOLUTION :N//A
Discussion
19213.

Question : Complete the following paragraph by selecting the correct sequence of words from the options given below. The Neanderthal man with a brain size of I lived near east and central (ii) between (iii) years back. They used (iv) to protect their body andduriedtheir dead.

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`{:(,"(i)","(ii)","(iii)","(iv)"),(,"500CC","AUSTRALIA","2,00,000-1,40,000","clothes"):}`
`{:(,"(i)","(ii)","(iii)","(iv)"),(,"900cc","Africa","40,000-80,000","TWIGS"):}`
`{:(,"(i)","(ii)","(iii)","(iv)"),(,"1400cc","Asia","1,00,000-40,000","hides"):}`
`{:(,"(i)","(ii)","(iii)","(iv)"),(,"650cc","Africa","75,000-10,000","LEAVES"):}`

Answer :C
Discussion
19214.

Question : Complete the following flow chart Pollen Mother cell rarr Pollen tetrad rarr

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Solution :Pollen Mother cell `rarr` Pollen tetrad `rarr`

In the process of MICROSPOROGENESIS by the process of meiosis pollen GRAINS (microspores) are PRODUCED from pollen mother cell. Microspores are produced in GROUP of four cells. It is called pollen tetrad

mature stage diagrams of pollen GRAIN
As anthers mature and dehydrate, the microspores dissociate from each other and develop into pollen grains. When pollen grain matures two cells are produced in which the bigger cell is called vegetative cell and smaller cell is called generative cell
Discussion
19215.

Question : Complete the following equation by identifying the microbes involved in bio remediation . PET Plastics overset(A)to terephthalic acid , Ethylene glycol Trichloro ethance overset(B)to Non - toxic ethane

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SOLUTION :A - Ideonella sakaiensis
B - Dehalococcoides SPECIES.
Discussion
19216.

Question : Complete the following chart by choosing correct option for A , B ,C and D

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ANSWER :C
Discussion
19217.

Question : Complete the following cross between a carrier female for colour blindness with a normal male and write the genotype and phenotype of progenies. X^(+)X^(C )xx X^(+)Y^(-)

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SOLUTION :
Discussion
19218.

Question : Complete the following cross. underset ("female")"AA ZW" xxunderset ("male")" AA Z Z "

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SOLUTION :
Discussion
19219.

Question : Complete the following.

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Solution :a. STAPHYLOCOCCUS `""` B. CYCLOSPORIN A
c. Swiss cheese `""` d. MONASCUS purpureus.
Discussion
19220.

Question : Complete the following 44 + XXY : Klinefelter's syndrome 44 + XO :_______

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SOLUTION :Turner.s SYNDROME
Discussion
19221.

Question : Complete the flowchart showing DNA finger printing.

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SOLUTION :a- RESTRICTION endonuclease
b-Gel electrophoresis
c - Alkali
d - Baking
e - AUTORADIOGRAPHY
Discussion
19222.

Question : Complete the equation. (a) " Phenylalanine " overset (A) to " Tyrosine" (b) "DOPA" overset(B) to " Melanin "

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SOLUTION :(a) A = PHENYLALANINE HYDROXYLASE
(B) B = Tryosinase
Discussion
19223.

Question : Complete the analogy Amoeba: Simple binary fission::paramecium: Choose the correct option.

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LONGITUDINAL BINARY fission
Simple binary fission
Oblique binary fission
Transverse binary fission

Answer :D
Discussion
19224.

Question : Complete linkeage is observed in

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BIRDS
LIZARDS
FROG
Drosophila

Answer :D
Discussion
19225.

Question : Complete linkage is observed in:

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MALE DROSOPHILLA sp.
Female Drosophilla sp.
Female silkworm
None of these

Answer :B
Discussion
19226.

Question : Complete linkage is found in

Answer»

MALE drosophila
Female SILKWORM
Both 1 and 2
ASPERGILLUS flavus

Answer :C
Discussion
19227.

Question : Complete linkage in Drosophila males

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Results in the ABSENCE of cross over
results in total absence of genetic recombination under normal control
Means that sperms PRODUCED are only of two types
results in all the genes in a PARTICULAR linkage GROUP mapping at the same point

Answer :A
Discussion
19228.

Question : Differentiate between complete linkage and incomplete linkage.

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SOLUTION :
Discussion
19229.

Question : Complementary, synthetic and random DNAs are used as

Answer»

Cluning VECTOR
Passcnger DNA
Recombinant DNA
Transpoons

SOLUTION :PASSENGER DNA
Discussion
19230.

Question : Competitive exclusion principle was given by

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AlIen
Pearl-Verhulst
Gause
N. Borlaug

Answer :C
Discussion
19231.

Question : Competition results in

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Extinction
MUTATION
LAGER NUMBER of NICHES
Symbiosis

Answer :C
Discussion
19232.

Question : Competition for food ,light and space is most servere between two

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closely RELATED species GROWING DIFFERENT niches
distantly related species growing in different niches
closely related species growing in same niches
distantly related species growing in same niches

Answer :C
Discussion
19233.

Question : Competition of species leads to

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Extinction
Mutation 
GREATER NUMBER of niches
Symbiosis 

ANSWER :A
Discussion
19234.

Question : Competition between species leads to

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EXTINCTION
Mutation
Amensalism
Symbiosis

Solution :Extinction
Discussion
19235.

Question : Competition and Mutualism.

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SOLUTION :
Discussion
19236.

Question : Compared with the gametophytes of the bryophytes, the gametophytes of vascular plants tends to be

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larger but to have smaller sex organs
larger and to have large sex organs
smaller and to have smaller sex organs
smaller but to have larger sex organs

Solution :?(C) As we proceed form thallophyta to ANGIOSPERMS, there is gradual REDUCTION in gametophyte with REDUCED size of sex organs.From thallophyta to angiosperms, there is PROGRESSIVE elaborationn of sporophytes.
Discussion
19237.

Question : Compare the various types of blotting techniques.

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SOLUTION :
Discussion
19238.

Question : Compare the statements A with B. Statement A: Ranikhet disease is the disease of poultry Statement B: It is caused by a virus.

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Both the statements A and B are correct.
Statement A is correct and B is WRONG
Statement A is wrong and B is correct
None of the above

Answer :A
Discussion
19239.

Question : Compare the pyramids of energy, biomass and numbers.

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SOLUTION :
Discussion
19240.

Question : Compare the mechanism of evolution proposed by Charles Darwin and Hugo de Vries.

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SOLUTION :Hugo de VRIES- said mutation causes evolution, MUTATIONS can be LARGE/ occur suddenly//directionless, Darwin-said evolution occurs by natural SELECTION, variations are small/ gradual directional.
Discussion
19241.

Question : Compare the life style of people living in the urban areas with those of rural areas and briefly describe how the life style affects their health.

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Solution :PEOPLE think that the city life is better than village life. However, there are so manyadvantages as well as disadvantages of urban life and rural life
Advantages of Urban (city)Life
The city life is more comfortable as there are lot of facilities in the city. There are more opportunities for people to progress their lives and they have more opportunitiesfor making money.
Children living in the city can get a good education, in the town than in the village. When aperson falls ill, there are good government and private hospital in the city to get treatment. There arelarge shopping complexes,banks, offices, cinemas, clubs, hospitals, etc., in and around the city for recreations.
People in the cityhave better transport facilities than the village. There is electricity, highway, communication, telecommunication, plumb facilities in the city. So, people can lead acomfortable and enjoyable life in the city.
Disadvantages of Urban (city) Life
Although living in the city has many advantages there are some disadvantages too. The cost of living is very high in the city. Goods are expensive, no fresh air and pure water is present. The environment is polluted with dust, smoke, garbage and gases from FACTORIES.
Most of the people who live in the city are corrupted, so there are lots of crimes in the city. Many thefts and murders often take place in the city.
The city is ALWAYS busy and noisy. There are a lot ofvehicles and people in the road. The streets are DUSTY and unclean. So, it is hard to lead a healthy lifein the city.
Advantages of Rural (village) Life
The people of the village live in unity and peace. The villagers earn money enough for live Very hardly. So, they live in less competition with each other. They have more friends in the community.
The village people always try to protect their traditional habits and culture. The village has clean air and the environment is very beautiful. The village has less noise and rush. So, the pollution is less.
The village do not have lot of vehicles. So, roads are less DANGEROUS for driving or cycling. They can get fresh vegetables and fresh fruits. The environment of the village is pleasant and silent and it has scenic beauty.
Disadvantages of Rural (village) Life
People living in rural area have to face manyproblems like lack of good education, proper medical facilities, transportation,electricity, telecommunication, etc.
Life style affects human health and cause many diseases due to specific food habits, work related posture or exposure to harmful radiation or substances, lack of physical exercise, mental stress, etc. Some life style diseases are cancer, alcoholism, heart diseases, etc.
Discussion
19242.

Question : Compare the growth models for the population growth of a species.

Answer»

SOLUTION :There are 2 MODELS of POPULATION GROWTH :
Discussion
19243.

Question : Compare the given pair and fill up the blanks . (a) Grasses : Wind pollination : : Zostera : ……………………. (b) Fragrant flower : Insect : : Light and nonsticky pollen : ……………..

Answer»

SOLUTION :(a) WATER (B) . WIND
Discussion
19244.

Question : Complete the flow chart.

Answer»

SOLUTION :
QUEEN Bee, Worker Bee- Diploid (2n)
DRONES(Male Bee ),Egg , sperm - HAPLOID(N)
Discussion
19245.

Question : Compare the columns and find out the correcrt combination {:(,"Column I",,"Column II"),((a),"Tridax",(i), "synandrous"),((b),"Dolichos",(ii),"Monadelphous"),((c), "Ceiba",(iii),"Syngenedious"),((d),"Cucurbita",(iv), "Polyadephous"),((v),,,"Diadelphouse"):}

Answer»

(a)-(IV), (b)-(v), (c)-(ii), (d)-(i)
(a)-(III), (b)-(v), (c)-(iv), (d)-(i)
(a)-(iii), (b)-(v), (c)-(i), (d)-(iv)
(a)-(v), (b)-(iii), (c)-(iv), (d)-(ii)

ANSWER :B
Discussion
19246.

Question : Compare schizogony with sporogony of plasmodium.

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SOLUTION :
Discussion
19247.

Question : Differentiate spices and condiments .

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Solution :Spices are accessory foods mainly used for flavouring during food preparation to improve their palatability. Spices are aromatic plant products and are characterized by sweet or bitter taste. Spices are added in MINIMAL quantities during the cooking PROCESS. For example BLACK pepper. CONDIMENTS, on the other hand, are flavouring substances having a sharp taste and are usually added to food after cooking. For example, curry LEAVES.
Discussion
19248.

Question : Compare Redifferentiation with Dedifferentiation.

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Solution :`{:("Redifferentiation",,"Dedifferentiation"),("A process by which an already differentiated cell undergo further DIFFERENTIATION to FORM another cell type",,"A process of reversion of CELLS (differentiated cells) to meristem state LEADING to callus formation is called dedifferentiation it."):}`
Differenticated cell `rarr` meristem state `rarr` New cells
Discussion
19249.

Question : Compare relative dating with absolute dating.

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Solution :Relative dating is used to determine a fossil by comparing it to SIMILAR rocks and fossils of known age. ABSOLUTE dating is used to dtermine the preciese age of a fossil by USING radiometric dating to MEASURE the decay of isotopes.
Discussion
19250.

Question : Compare point mutation with chromosomal mutation.

Answer»

Solution :MUTATIONAL events that take place within individual GENES are CALLED GENE mutations or point MUTATION , whereas the changes occur in structure and number of chromosomes is called chromosomal mutation.
Discussion