Madhyamik Life Science Question Paper
Madhyamik, the Class 10 School leaving
examination, is conducted by the West Bengal Board of Secondary Education
(WBBSE). The examination is held in the month of February 2019. Each paper
started on each day from 11.45 A.M to 3.00 P.M
Students can download the syllabus and the model
question papers from the official website of West Bengal Board of Secondary
Education. Here is the link is provided http://www.wbbse.org/.
Having the knowledge of previous years question
papers of Madhyamik Pariksha is essential for achieving the best performance.
At the Vision Success (website), you can view or even can downloaded in PDF form, the
previous year question papers. This post provides you the Madhyamik Life Science Question Paper 2019.
Madhyamik Question Papers Year wise | |
Madhyamik Question Paper 2020 | |
Madhyamik Question Paper 2019 | |
Madhyamik Question Paper 2018 | |
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Madhyamik Question Paper 2019 Solved |
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Life Science 2019 |
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Vision Success
West Bengal Board Secondary Education
(Answer to all questions is compulsory)
1. Write the answer in
complete sentence by choosing the correct answer for each question with
respective serial number. 1x15=15
1.1. Select which of the following statements is
correct related to tropic movement.
(a) It is controlled by the intensity of the
stimulus
(b) Overall change of place takes place by a plant
or part of the plant
(C) This movement is observed in the algae called
Volvox
(d) It is an induced movement of curvature
controlled by the direction of stimulus
1.2. Read the following sentences and identify the
sentence which is not correct -
(a) FSH, LH and Prolactin are different types of
GTH
(b) Adrenaline decreases cardiac output
(c) Insulin facilitates the absorption of glucose
into the cell through cell membrane
(d) Progesterone helps in the formation of placenta
in female body
1.3. Determine the number of Cranial nerves in
human body
(a) 10 Pairs (b)
31 Pairs (c) 12 Pairs (d) 21 Pairs
1.4. Identify the correct feature of Amitosis cell division
-
(a) Occurs in germ mother cell of sexually
reproducing organism
(b) It is called indirect cell division
(c) Chromosome and Spindle fibre are formed
(d) Chromosome and Spindle fibre are not formed
1.5. Determine which of the following statements is
correct regarding the significance of meiosis -
(a) It results in overall growth and development of
body
(b) It results in the growth of reproductive organs
and embryo of the organism
(c) It produces haploid gamete containing
hereditary variations
(d) It regenerates the organ in the body of some
animals if it is lost
1.6. Select the correct pair and write it
(a) Multiple fission- Hydra
(b) Fragmentation - Spirogyra
(C) Regeneration - Fern
(d) Budding - Planaria
1.7. Identify which of the following is a dominant
trait
(a) Length of the stem - Dwarf
(b) Shape of the seed – Wrinkled
(c) Colour of the cotyledon - Yellow
(d) Colour of the flower – White
1.8. Assess how many types of gametes are produced
from the Pea plant having the genotype RRYY
(a) One type (b)
Four types (c) Two types (d) Three types
1.9. Select which of the following two genotypes
are responsible for the expression of the phenotype wrinkled yellow in Pea
plant
(a) RRYY and rryy
(b) RRYy and RrYy (c) RRyy
and Rryy (d) rrYY and rrYy
1.10. Identify which of the following indicates
inter-specific struggle
(a) Struggle among the members of guppy fish for
feeding on mosquito larvae
(b) Struggle between snakes and owls for capturing
rats for eating
(C) Struggle within a group of deer for feeding on
grass at the same location
(d) Struggle between tigers in a jungle for preying
on deer
1.11. Determine the term related to the theory of
Lamarck
(a) Struggle for existence (b) Origin of variation
(c) Inheritance of acquired characters (d) Natural selection
1.12. Identify the animal who communicates
information with other members of its own group through specific dancing
pattern regarding the sources of food -
(a) Chimpanzee
(b) Cockroach (c) Peacock (d) Honeybee
1.13. Decide which of the following, if remains for
a long time in the environment, the probability of its bio magnification
increases -
(a) Newspaper (b)
Faecal matters of animals
(c) Rotten leaves (d)
Chlorinated insecticide
1.14. Gorumara, Corbett, Kulik, Nandadevi - choose
the correct sequence from the following which is correct for the above forests
in sequence -
(a) Biosphere Reserve, Sanctuary, National Park,
National Park
(b) National Park, National Park, Biosphere
Reserve, Sanctuary
(c) National Park, National Park, Sanctuary,
Biosphere Reserve
(d) Sanctuary, Biosphere Reserve, National Park,
Sanctuary
1.15. If the amount of pollen grains, fungal spores
and dust particles increase suddenly in the air, decide which of the following
problems may increase -
(a) Tuberculosis
(b) Asthma (c) Malaria (d) Dengue
Fill in the blanks with proper words in the
following sentences (any five): 1x5=5
2.1. By the influence of___________ hormone the
hairs on the skin get erected at emergency situation.
2.2. Chromosome is the condensed coiled structure
of __________molecule.
2.3. The sexual reproduction that occurs among two
genotypically different organisms belonging to the same species, is called __________
2.4. _________ was the aggregate of some large
colloidal molecules during the early phase of origin of life?
2.5. ________ is derived from the root of
Sarpagandha plant which is used as medicine for lowering high blood pressure.
2.6. The ex situ conservation by keeping sample
seeds in liquid nitrogen at a temperature of -196°C is called____________
Decide whether the following statements are true or false (any five): 1x5=5
2.7. Dilute urine is profusely eliminated by a
person affected with Diabetes Insipidus.
2.8. The Carpel of flowering plants collect pollen
grains with help of hairy and sticky style.
2.9. A pair of sex determining sex chromosomes are
present in the ovum of human
2.10. According to Darwin organisms reproduce at
geometric ratio.
2.11. One-horned rhinoceros is conserved at Manas
National Park of West Bengal.
2.12. Acetyl choline and adrenaline are
neurotransmitters.
Match the words in
Column-A with those which are most appropriate in Column-B and re-write the
correct pair mentioning the
serial no. of both the columns (any five): 1x5=5
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Column A |
Column |
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2.13 Presbyopia |
(a) BbRr |
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2.14 Cell Differentiation Phase of Growth |
(b) Haldane |
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2.15 Genotype of Guideapig having black and
coarse hair |
(c) Near vision is defective |
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2.16 Hot Dilute Soup |
(d) Change of climate and global warming |
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2.17 Destruction of forest and erosion |
(e) Formation of spindle fibre during animal of
ecosystem cell division |
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2.18 Centrosome |
(f) Formation of tissue, organ, and system (g) bbrr |
2.19. Choose the odd one and write it :
Glossopharyngeal, Occulomotor, Trigeminal, Oxytocin.
20. What is the function of the fluid present in the inter ben lens
and retina of the eyeball?
2.21. A pair of related terms is given below. On the basis of the
relation first pair write the suitable word in the gap of second pair.
Grafting: Mango:: __________: China Rose
2.22. What is the cause of expression of haemophilia disease only at
homozygous condition?
23. Write the genotypic ratio obtained at 2nd filial generation in
the experiment done by Mendel.
2.24. Which type of evolution is indicated by homologous organs?
2.25. Among the following four terms one includes the other three.
Find out write it: Pesticides used in Agriculture, Typhoid, Water Pollution,
liquid wastes from factories.
2.26. In which type of in situ conservation practice, the diversity,
culture and lifestyle of human is preserved along with microorganisms, wild
animals and wild plants?
Group 'C'
3. Answer any 12 questions in 2-3
sentences out of 17 questions given below: 2x12=24
3.1. Illustrate with the help of a word diagram the nervous pathway
of the way you will open the door by hearing the doorbell.
3.2. State the locations of Meninges and CSF.
3.3. What does influences gibberellin hormone exert on the seeds and
internode of plants? Explain.
3.4. Write the names of the different refractive mediums of eyeball
in proper sequence.
3.5. During the meiosis cell division, reduction in the number of
chromosomes and exchange of segments between chromatids take place -- Analyse
what are the significances of these two phenomena.
3.6. Distinguish between asexual and sexual reproduction on the
basis of the following features:
Number of Parents Nature of offspring
3.7. Identify the stages of Karyokinesis of mitosis cell division
depending on the following features:
• Alignment of chromosomes along the equator of the cell and their
arrangement in a definite pattern.
Disintegration of spindle
fibres.
• Disappearance of nuclear
membrane and nucleolus.
Movement of daughter chromosomes to the opposite poles of cell.
3.8. To establish the law of segregation in case of Pea plants, you
are asked to select characters. Write two such characters having opposite
traits.
3.9. A daughter is born to a woman carrier for the colour blind
disease who married a colour blind man. What would be the probability of
expression of colour blindness in that girl child? Analyse your answer.
3.10. Write the name of two genetic diseases which are expressed in
human populations.
3.11. Tigers are extinct but there are many deer in the jungle. A
few tigers are brought from another sanctuary and released in such a jungle.
Imagine and write the names of different kinds of struggle for existence those
tigers have to be involved in.
3.12. Describe any two adaptations in Sundari plant for tolerance of
salt.
3.13. Explain how do the chimpanzees hunt termites for food.
3.14. List the harmful effects of the following pollutants:
Greenhouse gas SPM Chemical fertilizers used in agriculture
Non-biodegradable chemical insecticide.
3.15. Give one example of exotic species causing damage of local bio
diversities in each of terrestrial and aquatic ecosystems.
3.16. Write the in situ conservation measures taken for one
endangered reptile species and name one site of such conservation in West
Bengal.
3.17. "Poaching is one of the fundamental causes of
endangeredness of animal diversity in India" -Assess four causes for which
animals are poached in India.
Group 'D'
(Long Answer Type Question) 5x6 = 30
4. Answers 6 questions or their
alternatives given below. Sightless candidates have to answer question no.4.1 (A) instead of question no.4.1 3+2,
2+3 or 5
4.1. Draw a neat diagram of a neurone and label the following parts:
3+2=5
(a) Dendron (b) Node of Ranvier (c) Myelin sheath (d) Schwann cell
Or, Draw a neat diagram of anaphase of mitosis of an animal cell and
label the following parts: 3+2=5
(a) Polar region (b) Spindle fibre (c) Chromatid (d) Centromere
4.2. Why is reproduction important for an organism?
"Meiosis is
characteristically different from Mitosis" -- how would you justify the
statement?2+3=5
Or, Describe five processes of asexual reproduction with one
suitable example for each
4.3. Show the result of hybridization till F, generation between a
pure black (BD) coarse haired (RR) guinea pig and a pure white (bb) smooth
haired (rr) guinea-pig by a checker board. State the conclusion one can reach
from this hybridization experiment. 3+2=5
Or, What symptoms are expressed in a child affected with
Thalassaemia? What suggestion are given at the time of genetic counselling in such
cases? 3+2=5
4.4. Describe the brief outline of the chemical origin of life
mentioning Miller and Urey's experiment.
Or, Describe two major tenets of Lamarck's evolutionary theory. How
does the comparative anatomy of hearts act as a proof in favour of evolutionary
theory? 2+3=5
4.5. Analyse the role of bacteria at any three steps of nitrogen
cycle. "Luxurious and comfortable lifestyle is one of the major reasons of
air pollution" - Support the statement with arguments. 3+2=5
Or, Give two examples of animal biodiversity endangered by the
pollution of the river Ganga. Explain any three incidences which are occurring
as a result of disruption of nitrogen cycle. 2+3=5
4.6. “Change of climate and global warming is a problem resulting
from the increasing human population" --Summarise what impacts it might
exert on environment. "Children and adults both suffer with different
respiratory problems during the winter" - Write two names of such problems
and state one symptom of each of them. 3+2=5
Or, You have identified three
environmental problems while on a research in Sunderbans. • Disbalance in
prey-predator number, • Destruction of mangrove plants due to urbanization, Submergence
of islands due to rising sea level. Analyse what impacts they might exert on
biodiversity. Write the location of Sundaland hotspot and one important species
of its biodiversity.
Madhyamik Question Paper PDF | English Version | Urdu Version |
Life Science 2019 |
Madhyamik Question Paper 2019 | ||
Subject wise List | ||
1 | Urdu | |
2 | Bengali | |
3 | Hindi | |
4 | English | |
5 | Mathematics | |
6 | Life Science | |
7 | Physical Science | |
8 | Geography | |
9 | History | |