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BIOLOGY (PAPER) CBSE PM/PD-2007 [MAINS]
1. Experiments were performed on young ones of mouse they were given-
(a) Complete diet
(b) Diet without experiment diet
(c) Carotene (carrot) mixed diet these diet were for 30 day and following graph was obtained.
Direct Carotene ( ) 30
a
c
b
(i) What is given by a, b, c ? give reasons.
a, b, c
(ii) How a, b and c differs from each other ? Give reason.
a, b c
(iii) If they are given (i) retinol (ii) Pyridoxin (iii) Vit C (ascorbic acid) than what will be the affect of these on rat
body ? What will be the affect if these are given in excess.
(i) (ii) (iii) Vit C (ascorbic acid)
2. In the figure human hand pedegree analysis is given.
(i) In the above pedgree which character is represented ?
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(ii) What is represented by circle and squares ?
(iii) Which one is heterozygous, male or female, give reason.
(iv) Give reason wheather the above character is sex linked or not ?
(v) What is the probability of disease occurance in fifth child ?
3. Give position and function of the following-
(a) Cytoskeleton
(b) Synergid
(c) Seive elements
(d) Centromere
(e) Phytol Tail
4. Give difference -
(i) Culm and Caudex
(ii) Biological magnification and eutrophication
(iii) Hypanthodium and cyathium
(iv) Slime mould and fungi
(v) White Rot & Brown Rot of Wood
5. Whale, Peacock, Bat, Earthworm, Starfish, House lizard, Scorpion, Lizard
In the above animals -
(i) Which one is different in symmetry and what is its symmetry.
(ii) Which animal belongs to same class and phylum ?
class Phylum
(iii) Which animal have 3 ear ossicles ? Give sequence of sound conduction in them.
3
(iv) Which animals belong to same phylum ?
Phylum
(v) Which two animals are poisonous ? Give its class and phylum.
Poisnous
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6. Inflorescence , Placentation , fruits
Flower Inflorescence Placentation Fruits
(i) Sunflower
(ii) Coriander
(iii) Wheat
(iv) Pea
(v) Musturd
7. Match the following-
(i) DNA Polymerase (a) Acetabularia
(ii) Giriffth (b) Neurospora
(iii) Temin & Baltimore (c) Okazzaki frogment
(iv) One gene one enzyme (d) Operon
(v) Jocob& Monad (e) Transformation
(f) transduction
(g) Reverse transcriptase
(h) Plasmid
(i) Conjugation
(j) Emasculation
(k) Soridia
8.
(i) Identify A and B. which one is found in plant & animal both ?
A B
(ii) Which metabolic reaction occurs 1, 2, 3, and 4.
1, 2, 3 and 4
(iii) Which gamete (male or female) transfer A and B to next generation.
A B
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9. (a) In our body nictitating membrane, vermiform appendix and reduced body hairs are kept in which category?
nictitating membrane vermiform appendix , ruminatid body hair
(b) Can be keep the following parts in the same category same as above ? Give reasons ?
(i) Defective lens due to cataract ( )
(ii) Coccyx
(iii) Mammary gland in males
(iv) External ear muscles
10. Match the following-
(i) ACTH (a) Adrenal cortex
(ii) Hirudin (b) Neurohypophysis
(iii) Tick fever (c) Adenohypophysis
(iv) Indian rhinoceros (d) Seeds of Brassica napus
(v) r-DNA Technique (e) Protozoa in RBC (RBC
(f) Babesia
(g) Gir forest
(h) Gim carbert national park
(i) Endangered species (extinct species)
(j) Triple vaccive
(k) Cretinism
(l) Plasmid
(m) Anticoagulant
11. Carefully study the following figures and answer the following questions-
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(1) What is A ? Labellel p and q ?
A p&q
(2) Identify B ? Write names of a and b.
B a&b
Wheather T1 or T2 bacteriophage (T1 T2 Bacteriophase)
(3) What is C. Epigynous or hypogynous ovary give reason.
C Epigynous hypogynous ovary
(4) What is the aestivation in fig D ? In which of the following it is found - Pea, Soyabean, Mustard, Lemon and
Groundnut ?
D
(5) What is the type of ovule in fig. E ? In which of the following it is found. Polygonum, Rubus, Caster, Brinjal,
Papaver.
E
12. Fill in the blanks using the terms given below-
Monoarch Butterfly, Ecotone, Lemon Butterfly, Poison, Maximum, Minimum, Transition zone, Larger, Lesser,
Edge effect species, Birth rate, Carrying capacity, Nector, Benthic, Littoral, Limnetic, Monoecious, Dioecious,
Xenogamy, Geitenogamy.
(i) Viceroy butterfly resembels to ................... . It contains ..........................
Viceroy Butterfly .................... ........................
(ii) Phytoplankton are found in ........................... while snails and slugs are found in .................
Phyto plankton ............... Slugs Snails ...............
(iii) The number of organisms found in an area is called as ...........................
.....................
(iv) The bank species found in the contact region of grassland and forest these are called as.
........................ ................
(v) Male and famale flowers are found on same plant. This condition is known as .............. It shows ..............
type of pollination which occur between these two flowers of the same plant.
....................
13. Fill in the blanks
Cycas, Pinus, Corralloid root, Vivipary, Anabena, Nostoc, Marsilea, Usnea, Oscillatoria, Pneumatophore,
Eichornea.
(i) ...........................is present in rhizophora. It also shows ........................
Rhizophora ................. ..................
(ii) ................................. is a gymnosperm and it have ............................
Gymnosperm .................... ....................
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(iii) .......................... is an aquatic pteriodophyte and ...................... is an aquatic angiosperm ?
............................. .................
(vi) Heterocyst is found in ..................................
..............................
14.
(1) What will be the population growth after 30-40 years. Give reason.
30-40
(2) In which, A and B economic development per person will be more. Give reason.
A&B
(3) Where will be more requirement of Nurse and information technology. Where the migration will be occurs
(between A and B)
(migration) A & B
15. In cellular photorespiration RuBP is oxidised by Rubisco to produce phosphoglycolate and phosphoglycerate.
What are the intermediates formed and in which cell organelles ? Name them. Draw outline cycle.
RuBP Rubisco oxidation phosphoglycolate & phosphoglycerate
16. Dominance , Codominance , Incomplete dominance , Interferons, Recessive
Alleles alleles), Traits , Sudden inheritable changes , Ionising
radiation , Structural mutation , Epistasis . Phenotype
, Re-combination , Independent assortment , Linkage of Alleles (Alleles
(i) Reason of mutation.
Mutation
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(ii) Which shows the effect in homozygous state ?
(iii) When both alleles are dominant ?
Alleles
(iv) When one allele inhibit expression of other allel.
Alleles Allele
(v) Product formed by genetic engineering ........................
............................ Genetic engineering
(vi) Mutation occurs due to.......................
(vii) .................Phenotype character expressed in offspring due to mutation.
..........................
(viii)
(ix)
(x)
17. Math the following-
(i) Biopiracy (A) Poly galactouronidase
(ii) Flaver saver (B) Turmaric
(iii) Acid rain (C) Spirulins
(iv) Protoplast fussion (D) Nitrogen oxides
(v) Somoclonal variation (E) Chloro floro carbon
(F) Carbon oxides
(G) Sulphur oxides
(H) PEG
(I) Endogenous haploid
(J) Callus
(K) Mutation
18. Define -
(i) Flora & Vegetation
(ii) Difference between habitat & ecological niche
(iii) Four characteristic of biotic community
19.
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(i) What is the type of reflax action ?
(ii) Give role of X and Y ?
X Y
(iii) Identify wrong names and correct them ?
(iv) In which part of body stimulus is given ?
20. (i) Who discovered photoperiodism.
(ii) Who gave the term phytochrome ? What is its unique character.
Phytochrome
(iii) Given 3 methods of seed dormancy ?
Seed dormancy 3
(iv) Sort out the eg. of SDP and LDP from following.
LDP SDP
(a) Radish (b) Spinach
(c) Bryophyllum (d) Rice
(e) Oat (f) (Chrysanthemum)
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BIOLOGY (SOLUTION) CBSE PM/PD-2007 [MAINS]
Sol.1 (i) a, b, c curve shows the weight gain by mouse young ones in the experiment days. These curve shows the
difference in diet results in weight difference.
a, b, c
(ii) Curve 'a' shows best growth in complete diet. (balanced diet)
'a'
Curve 'b' shows addition of carotene (vitamin-A that is fat-less diet) in diet reduces weight gain curve 'c' shows
average growth in normal diet.
'b' ( -A )
'c'
(iii) * If mouse is fed on retinol i.e. vit-A then its vision and eye development will be best.
* A
* If it is fed on pyridoxin then it will favour normal metabolism.
*
* If it is fed on ascorbic acid then bone, fiber growth, will be best.
*
* If these vitamins are given in excess then mouse will suffer from hypervitaminosis and that will adversly
affect growth.
*
Sol.2 (i) Pedigree represents polydactyly (Autosomal dominant trait)
polydactyly ( )
(ii) Circle represents female and square represents male.
(iii) Male is heterozygous (Aa) because Trait is absent in few offsprings.
(Aa)
(iv) This trait is not sex linked because male and female offsprings both shows trait & pedigree does not
represent cross-cross inheritance.
a a
A Aa Aa
+
(v)
a aa aa
There is 50% chances of diseases in fifth female child ( 50% )
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Sol.3 (a) Cytoskeleton - It is a network of filaments, proteinaceous structure present in cytoplasm. It provides mechanical
support, motility & maintenance of the shape of the cell.
(b) Synergid - These are two cells present in egg apparatus of embryo sac of female gametophyte. They have
lateral hooks and terminal filiform apparatus for guiding pollen tubes.
(c) Seive elements - These are long tube like structures, arranged longitudinally and are present in phloem.
They help in conducting food material.
(d) Centromere - These are primary constriction of chromosome present on the sides of which kinetochores
are present. These are the sites of spindle fibres attachment.
(e) Phytol tail - Phytol tail is a side chain, extends from one of the pyrole rings present in the chlorophyll
molecule. It is helps to anchor the chlorophyll molecules within the thylakoid membranes in the chloroplasts.
Sol.4. (i) Culm Caudex
1. Unbranched stems without leaf crown Unbranched stem with leaves crowned at the apex
2. Nodes and internodes are extremely clear Node and internodes are not extremly clear
3. Internode are hollow Internode are not hollow
4. Example - Bambusa Example - Datepalm
(ii) Biological magnification Eutrophication
Phenomenon in which persistant polutants Process of nutrient enrichment of water and
(DDT) get accumulated in tissue in consequent loss of species diversity is called
increasing concentrations along the food eutrophication
chain is called biological magnification
(DDT)
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(iii) Hypenthodium Cythium
1. The receptacle is flask shaped and fleshy The receptacle is cup shaped and never fleshy
2. The peduncle forms the receptacle The involucre form the receptacle
3. The flowers are completely enclosed in The flowers are generally exposed on the opening
the receptacle e.g. Ficus, Fig. of the recepticle eg. Euphorbia
(iv) Slime moulds Fungi
1. Slime molds are saprophytic protists Fungi consitute a kingdom of heterotrophic organisms
which can be saprophytes parasites or symbiont
2. Spore have a cell wall of cellulose, chitin is Chitin is present in cell wall
absent
Sol.5 (i) Star fish adult have pentamerous radial symmetry while rest are billateraly symmetrical.
(ii) Whale and bat belong to class mammalia and phylum chordata.
(iii) Whale and bat have three ear ossicles. The sequence of sound wave conduction is Malleus Incus
Stapes.
Malleus Incus Stapes.
(iv) Whale, Bat, House Lizard, Peacock belong to phylum chordate. Honey bee and Scorpion belong to phylum
arthropoda.
Sol.6 Flower Inflorescence Placentation Fruits
(i) Sunflower Capitulum Basal Cypsella
(ii) Coriander Compound unbel Basal Cremocarp
(iii) Wheat Spike of spiklelet Basal Caryopsis
(iv) Pea Axillary cyme Marginal Caryopsis
(v) Musturd Raceme Parietal Silique
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Sol.7 (i) c (ii) e (iii) g (iv) b (v) d
Sol.8 (i) A = Chloroplast
B = Mitochondria
Mitochondria is found in plant & animal cell both.
(ii) 1. – Light reaction
2. – Dark reaction
3. – Oxidative photophosphorylation
4. – TCA cycle - Creb's cycle
(iii) Female gamete transfer A and B to next generation.
A B
Sol.9 (a) Vestigeal organs
(b) (i) No, It develops due to metabolic abnormality.
(ii) Yes, because tail is absent
(iii) Yes, because only females nourish the young ones.
(iv) Yes, because ear pinna is not used in sound wave collection in humans.
Sol.10(i) c (ii) d, m (iii) e, f (iv) h (v) l
Sol.11 (1) A = Nostoc
p = Heterocyst
q = Hormogonia
(2) a = Tail fibres b = Collar
T2 = Bacteriophage
(3) Epigynous, Because stamens, petals and sepals are inserted above the level of ovary i.e. ovary is inferior and
other floral parts are superior.
(4) Vexillary (descending inbricate), Pea
(5) Anatropous, Brinjal
Sol.12 (i) Monarch butterfly, Poison (ii) Limnetic , Benthic
(iii) Carrying capacity (iv) Edge effect, Ecotone
(v) Monoecious, Geitonogamy
Sol.13(i) Pneumatophore, Vivipary
(ii) Cycas, Corralloid root
(iii) Marselia, Eichornia
(iv) Nostoc
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Sol.14.(i) A – Stable
B – Population explosion
(ii) In A economic development will be more because it have small population.
A
(iii) In B there will be more requirement of nurse and IT. Migration will occur from B to A.
B B A
Sol.15
Sol. (i) Sudden inheritance changes (ii) Recessive alleles
(iii) Co-dominance (iv) Dominance
(v) Interferons (vi) Ionising radiations
(vii) Recessive alleles (viii)
(ix) (x)
Sol. 17(i) B (ii) A (iii) G (iv) H (v) K
Sol.18(i) Flora - Species content of plants in an area is called flora. Flora is listed
Flora -
Vegetation - The collective and continous growth of plants in space is called vegetation vegetation is described.
Vegetation - vegetation
(ii) Habitat - Place occupied by an organism/population community which is exposed to particular combination
of environemental factors.
Ecological niche - Refers to the range of conditions that a particular organism can tolerate the resources it
utilises and its functional role in the ecological system.
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(iii) Characters of biotic community-
(1) Species diversity
(2) Dominance
(3) Zonation and stratification
(4) Succession
Sol.19(i) Unconditioned Reflex – Knee-Jerk Reflex
(ii) X – Effferent pathway - gives orders from spinal cord to the muscles (effector)
Y - Afferent pathway - bring message from receptor to the spinal cord.
X– (effector)
Y-
(iii) Knee ( )
Sol.20(i) Garner & Allard
(ii) Butler et al
The pigment is a dimer having comprising a light absorbing chromophore bound to a protein molecule. It
occurs in two forms PR and PFR which are interconvertible.
(iii) (a) Mechanical scarification
(b) Chemical sarification
(c) High temperature treatment
(d) Neutralize the effect of germination inhibitors
(iv) LDP - Radish, Spinach
SDP - Chrysanthemum
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