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11151.

Question : Oestrogen works in cancer as :-

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TUMOUR promoters
Tumour marker
Oncogenic transformers
All the above

Answer :A
Discussion
11152.

Question : Odisha is an Indian state with maximum broiler and egg production.

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ANSWER :ANDHRA PRADESH
Discussion
11153.

Question : Occurrence of more than one embryo in a seed is referred as polygamy.

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True
False

Answer :POLYEMBRYONY
Discussion
11154.

Question : Oceans occupy ........ %of the surface of earth but productivity of oceans are ........ billion tons.

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70, 45
60,55 
70,55 
60,65 

SOLUTION :70,55
Discussion
11155.

Question : Occurrence of more than one type of leaves is

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DECUSSATE phyllotaxy
Heterophylly
Aestivation
Anisophylly.

Answer :B
Discussion
11156.

Question : Occurrence of more than one embryo in a seed is called polyembryony. How does polyembryony occur?

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Solution :Some of the nucellar cells surrounding the embryo sac is DIPLOID that start dividing and DEVELOP into the embryos.
Discussion
11157.

Question : Occurrence of more than one embryo in a seed is called polyembryony. Give two examples of polyembryony.

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SOLUTION :CITRUS and MANGO
Discussion
11158.

Question : Occurrence of C_(4) pathway in certain plants ( called C_(4) plants) in nature is an outcome of

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A necessity to get RID off an APPARENTLY WASTEFUL PROCESS of photorespiration
A necessity to get rid off an apparently wasteful process of transpiration
A necessity to get rid off an apparently wasteful process of photooxidation
A necessity to get rid off an apparently wasteful process of solarisation

Answer :A
Discussion
11159.

Question :Occasionally, in some seeds such as black pepper, beet and castor, remnants of nucellus are also persistent. This residual, persistent nucellus is called:

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ENDOSPERM
INTEGUMENT
PERISPERM
Aril

Answer :C
Discussion
11160.

Question : Occassionally, a single gene may express more than one effect. The phenomenon is called

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MULTIPLE allelism
Mosaicism
Pleiotropy
Polygeny

Answer :C
Discussion
11161.

Question : Occasionally, a single gene, may express more than one effect. The phenomenon is called

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Multiple allelism
Mosaicism
Pleiotropy
Polygeny

SOLUTION :Occasionally, a single gene may express more than one effect. The phenomenon is called pleiotropy.(sickle CELL anemia)
= Multiple allelism is more than 2 alternative forms of the same gene. (INHERITANCE of blood groups)
= Mosaicism describes the occurance of cells that defer in their GENETIC component from other cells of the body or presence of more than one type of cell.(down syndrome)
=Polygeny is the inheritance of the CHARACTERS in which one character is controlled by many genes and the intensity of the character depends upon number of dominant allele.(skin and eye colour)
Discussion
11162.

Question : Observe the two structural farmulae. They are

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ISOMERS
EPIMERS
ANOMERS
All the above.

Solution :N//A
Discussion
11163.

Question : Observe the tabular column and complete it using proper terms.

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SOLUTION :A = +D = PARASITISM
B = CommensalismE = -
C = -
Discussion
11164.

Question : Observe the table and fill in the blanks .

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SOLUTION :
Discussion
11165.

Question : Observe the table and fill a,b,c and d

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ANSWER :a)pusa sadabahar
B)Brassica
c)BLACK ROT / curl blight black rot
d)pusa komal
Discussion
11166.

Question : Observe the symbol used pedigree analysis, and give the proper terms they represent.

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SOLUTION :(a)
Discussion
11167.

Question : Observe the set of 4 figures A, B, C and D and, answer the following questions (i) Which one of the figures shows mutualism ? (ii) What kind of association is shown in D? (iii) Name the organisms and the association in C. (iv) What role is the insect performing in B ?

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Solution :• (i) Figure .A. shows. mutualism (plant and pollinator insect).
• (ii) Figure .B. shows PHYTOPHAGY (insect that feed on SAP of the flower).
• (iii) Figure .C. shows commensalism (CATTLE egret and grazing cattle)
• (iv) In figure .D. shows predation (leopard killing DEER and eating it)
Discussion
11168.

Question : Observe the skull of various animals given below and answer the questions.Among the three skulls name the two that closely resemble one another.

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Solution :The SKULL of BABY CHIMPANZEE and that of a modern man closely RESEMBLE one another.
Discussion
11169.

Question : Observe the sketch of stirred-tank bioreactor and label the parts. A, B, C and D.

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SOLUTION :A - MOTOR
B - Foam braker
C - Flat bladed impeller
D - Acid/base for PH CONTROL
Discussion
11170.

Question : Observe the relationship between the first two terms and fill in the blanks. Exine: Sporopollenin, Intine : …….

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SOLUTION :CELLULOSE and PECTIN
Discussion
11171.

Question : Observe the relationshipbetweenthe firsttwo termsand fill in the blank .Green house effect : carbon dioxide , ozone depletion :………………………………….

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SOLUTION :CHLOROFLUROCARBONS
Discussion
11172.

Question : Expand the common short forms used in biotechnology. (i) GEAC (ii) GMO (iii) PCR (iv) ELISA

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Solution :(i) GEAC - Genetic Engineering Approval Committee
(ii) GMO - Genetically MODIFIED Organism
(iii) PCR - Polymerase Chain Reaction
(IV) ELISA - Enzyme LINKED Immuno-sorbent Assay
Discussion
11173.

Question : Observe the relation in the first pair and fill up the blank in the second. Cry Iac : Control cotton boll worms _____ : Control corn borer

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SOLUTION :CRY I AB
Discussion
11174.

Question : Observe the relation in the first pair and fill up the blank in the box

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Solution :(A.) PUSA SADABAHAR(B.) Pusa Sem 2, Pusa Sem 3
Discussion
11175.

Question : Observe the realtionship between the first two terms and fill in the blanks.Hibernation :Bear:………………………: Snail

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SOLUTION :AESTIVATION
Discussion
11176.

Question : Observe the relationship between the first two terms and fill in the blanks. Pistils fused : syncarpous, Pistils free : ………

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ANSWER :A::C
Discussion
11177.

Question : Observe the picture given towards your right side and answer the questions (a) Name the type of species interaction represented by this picture (b) Whether it is a positive interaction or negative interaction? (c) Define the type of interaction.

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Solution :(a) Predation
(b) Negative interaction
(c) Predation is a TYPE of interaction where one SPECIES (predator) is benefitted and the other species (prey) is killed. In this PICTURE FROG is a predator and the FLY is the prey.]
Discussion
11178.

Question : Observe the picture and answer the questions. (a) Label the part - A (b) Name the types of vegetative propagule Give one examplefor such type of vegetative propagule. **

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SOLUTION :(a) A - Bud from eye
(b) TUBER
(c) SOLANUM TUBEROSUM
Discussion
11179.

Question : Observe the picture and name the type interaction between the organism and explain them.

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Solution :(a) COMPETITION : Two species interact and both of them are HARMED.
(b) Predation : One species is benefited and other is killed.
(C) Parasitism: One species is benefited and other is harmed.
Discussion
11180.

Question : Observe the given sequence of nitrogenous bases on a DNAfragment and answer the following questions. 5CAGAATTCTTA-3 3-GTCTTAAGAAT-5>br> Why are the ends generated after digestion called stickly ends?

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Solution :(C ) These are NAMED sticky ends, because they from HYDROGEN bonds with their complementary CUT parts.
Discussion
11181.

Question :Observe the graph between light intensity and the rate of photosynthesis. Choose the correct graph w.r.t. A,B,C,D,E mentioned in the graph. a. (A) (I) Value of light intensity after which there is no increase in the rate of photosynthesis.

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a(iii), B(IV), c(i), d(II)
a(iv), b(iii), c(i), d(ii)
a(iii), b(iv), c(i), d(ii) (2) a(iv), b(iii), c(i), d(ii)
a(iv), b(iii), c(i), d(ii)

ANSWER :A
Discussion
11182.

Question : Observe the given sequence of nitrogenous bases on a DNAfragment and answer the following questions. 5CAGAATTCTTA-3 3-GTCTTAAGAAT-5 (a) Name of restriction enzyme which can recognise this DNA sequence.

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SOLUTION :(a) ECORI
Discussion
11183.

Question : Observe the given sequence of nitrogenous bases on a DNAfragment and answer the following questions. 5CAGAATTCTTA-3 3-GTCTTAAGAAT-5 (b) Write the sequence after digestion.

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SOLUTION :
Discussion
11184.

Question :Observe the given pie chart representing biodiversity ofdifferent vertebrates.Choose the correct option for (A-C)A B C

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FISHES BIRDS amphibians
fishes MOLLUSCS amphibians
insects Birds fishes
insect CRUSTACEANS molluscs

Answer :A
Discussion
11185.

Question : Observe the given flow chart and complete it .

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SOLUTION :
A. PLASMID B. rDNA/chimeric DNA
Discussion
11186.

Question : Observe the given diagram carefully and choose the correct option.

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Water moves from B to A
Column A has HIGHER FREE ENERGY of water
Column B has higher free energy of water
Both (1) and (3)

Answer :B
Discussion
11187.

Question : Observe the gene sequence and identify of aberration A B C B C D E F ?

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TANDEM duplication
SIMPLE duplication
REVERSE tandem duplication
Displaced tandem duplication

ANSWER :A
Discussion
11188.

Question : Observe the food chain given below Grass rarr Goat rarr Goat rarr Man Identify the type of food chain.

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SOLUTION :GRAZING FOOD CHAIN.
Discussion
11189.

Question : Observe the food chain given below Grass rarr Goat rarr Goat rarr Man How does it differ from detritus food chain ?

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SOLUTION :GRAZING food chain starts with producers while detritus food chain starts with dead organic MATTER.
Discussion
11190.

Question : Observe the following statements ,Select the correct one.

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Temperature is sub-zero level in polar AREAS and high altitude and increases to above 50°c in tropical desert in summer.
In unique habitats such as thermal springs and DEEP SEA hydrothermal vents AVERAGE temperatures exceed 20°c.
Mango trees grown in temperate countries LIKE canada and Germany.

Answer :A
Discussion
11191.

Question : Observe the followiing statements and pick out the right optionfrom the following: Statement I: The drug sources of Siddha inculde plants,animal parts, ores and minerals. Statement : minearls are used for preparing drugs with long shelf - life .

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STATEMENT I is correct
Statement II is correct
Both STATEMENTS are correct
Both statements are wrong

Answer :C
Discussion
11192.

Question : Observe the followiing statements and pick out the right optionfrom the following: Statement I- Perfumes are manufactured from essentail oils. Statement II- Essentail oils are formed at different parts of the plants.

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STATEMENT I is correct
Statement II is correct
Both STATEMENTS are correct
Both statements are wrong

Answer :C
Discussion
11193.

Question : Observe the following diagram and answer the quesions What is the role of z,y and a genes in this metabolic pathway ?

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SOLUTION :Z,y and a genes are the structural gence which PRODUCE mRNA for the SYNTHESIS of three enzymes which are NEEDED for the metabolism of lactose. They are `z-beta` galactosidase y-permease a-transacetylase
Discussion
11194.

Question : Observe the following diagram, identify the organism and name the biological phenomenon taking place in the organism.

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SOLUTION :Name of the organism : HYDRA
BIOLOGICAL process : EXOGENOUS budding
Discussion
11195.

Question :Observe the following diagram and identify the correct option

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A has more REPEATS than B
The NUMBER of repeats are same in both A&B
A is CLOSE to the top of the gel
B has more repeats than A

Answer :D
Discussion
11196.

Question : Observe the following A and B. a. List out the desirable characters in the plants given in figures A and B. b. Suggest a possible technique to integrate these characters in a new variety. c. Explain the process involved in the technique you suggested.

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Solution :a. Fig. A - More number of fruits
Fig. B - Large SIZE of fruits
b. Hybridisation
c. i.. SELECTION of parent
ii. Emasculation
iii. Artificial pollination
iv. Bagging
V. Growing the F, HYBRID
Discussion
11197.

Question : Observe the flow chart given below and answer the following questions.Identify I,B,D and E.

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SOLUTION :I-Immigration D-Mortality B-Natality E-Emigration
Discussion
11198.

Question : Observe the flow chart given below. Fill in the blank 1 and 2. Write the relevance of the process indicated as 1.

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Solution :1) Bagging
2) Artificial POLLINATION
In bagging the entry of UNWANTED POLLEN to sigmatic surface is prevented.
Discussion
11199.

Question : Observe the figure given below. Label the parts a,b,c and d.

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SOLUTION :a - MICROPYLE
B- EMBRYO SAC
c - Nucellus
d - Chalaza
Discussion
11200.

Question : Observe the figure A and B given below and answer the following questions. (i) The power generation by the above two methods is non-polluting. True/False. (ii) List any two applications of solar energy (iii) What is a photovoltaic cell?

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SOLUTION :(i) True.
(II) (a) Electricity GENERATION (b) Solar light
(iii) A photovoltaic cell is a semiconductor diode that CONVERTS visible light into direct current (DC).
Discussion