TEST PAPER -2
Time: 3hrs 15 mins. Full Marks: 90
Group -A
(Answer to all questions is compulsory)
1) Write the answer in complete sentence by choosing the correct answer for each question will respected serial number: (1x 15= 15)
a) The gland which according to you is a known as Master gland is
i) pituitary ii) adrenal iii) pancreas iv) thyroid
b) Which of the following breaks dormancy and causes germination of seed
i) auxin ii) gibberlin iii) cytokinin iv) Ethylene
c) Select from the following the number of cranial nerves present in human beings.
i) 10 pairs ii) 12 pairs iii) 24 pairs iv) 31 pairs
d) The name of the sugar present in DNA is
i) ribos ii) pentose iii) Deoxyribose iv) glucose
e) The type of asexual reproduction found in Planaria is
i) fragmentation ii) spore production iii) regeneration iv) budding
f) A person is passing through the period between childhood and maturity. Choose the time period he is passing through
i) 10 -19 years ii) 15- 25 years iii) 13- 19 years iv) 25 -35 years
g) He performed experiments on heredity and is known as father of genetics. He is
i) Lamarck ii) Darwin iii) Mendel iv) Johansen
h) Deduce the types of gametes that could be formed from YyRr
i) three types ii) 4 types iii) 5 types iv) 2 types
i) A boy can roll his tongue while another boy cannot. They are each other
i) variation ii) locus iii) character iv) genotype
j) Identify the oldest fossil of horse from the following --
i) Pliohippus ii) Merychippus iii) Mesohippus iv) Eohippus
k) The organ present in fish that helps in maintain buoyancy is
i) Gill ii) Swim bladder iii) Tailfin iv) Thoracic fin
l) The theory 'Struggle for existence' was proposed by
i) Lamarck ii) Hugo-De-Vvris iii) Weissman iv) Darwin
m) The nitrogen fixing bacteria which is present symbiotically in the root of leguminous plant is
i) azotobacter ii) Clostridium iii) rhizobium iv) Nitrobacter
n) You have visited hotspot in India where you findnone-horned rhino, you have visited
i) Sundaland ii) Westernghat and Sri Lanka iii) Indo-Burma iv) Eastern Himalayas
o) The chemical used in cryoopreservation is
i) liquid oxygen ii) liquid nitrogen iii) liquid carbon dioxide iv) liquid Methane
Group B
2) Answer any 21 questions out of 26 questions given below as instructed. 1x21=21
Fill in the blanks with proper words in the following sentence (any five ): 1x5=5
a) The three layer layered covering of human brain is called____
b) The unit of asexual reproduction of human brain is called ____
c) The importance of ____ chromosome is maximum to determine the sex of human beings.
d) The theory of origin of new organ to meet the demand is the opinion put forward by ___
e) ____ is a disease you will find in an area suffering from water pollution.
f) The Asian Lion can be found in the ____sanctuary of Gujarat.
Decide whether the following statements are true or false (any five) 1x5=5
g) Insufficient release of STH can make a child dwarf.
h) In cross pollination there is no need of carrier.
i) When a pure tall and a pure dwarf plant are crossed then the offspring produced is a hybrid.
j) Cactus could survive without water at a stretc in the hot desert conditions.
k) Chewing of tobacco can lead of asthma .
l) A high intensed sound can cause damage to our digestive tract.
Match the words in column A with those which are most appropriate in column B and rewrite the correct pair mentioning the serial number of both the columns (only 5): 5x1=5
Column A
j) Amoeba
k) DNA
l) incomplete dominance
m) bee dance
n) Greenhouse gas
o). meiotic cell division
Column B
i) carbon dioxide
ii) Pseudopodia
iii) evening Glory
iv) crossing over
v) communication
vi) Singalila
vii) Double stranded
Answer in a single word or in a single sentences (any six): 1x6=6
p) Choose the odd one and write it :
Oxytocin, Prolactin, Follicle, Stimulating Hormone , Luteinising Hormone .
q) "A plant hormone acts as chemical messenger. " Explain the statement.
r) A pair of related terms is given below. On the basis of the relationship in the first pair write the suitable word in the gap of the second pair.
Planeria : regeneration : : Yeast : ___
s) In guinea pig, black fur is dominant over white fur. Suggest what would be the probable genotype of a white guinea pig.
t) Deduce what happens when male gamete (22A + X) fuses with female gamete.
u) Name the organ whose origin are same but they function differently.
v) There is a industry near a locality sending our smoke. Write the name of a disease that can spread in the locality because of it.
w) An alkaloids obtained from a particular plant is used to reduce the high blood pressure.
Group - C
3) Answer any 12 question in 2-3 sentences out of 17 questions given below. 2x12= 24
a) You are concentrating open your studies when suddenly an intense torch light flashes upon your eyes. Explain your reaction and the mechanism behind it.
b)Discuss about the pituitary gland on the basis of the following points
i) location ii) two measure divisions
c) A bird is flying in the sky. Explain how its feathers , the remiges and the rectrices , are helping in its action.
d) Why does a plant acquire bushy appearance when its terminal end is nipped off regularly ? Explain this with the role of plant hormone.
e) Differentiate between sexual and asexual reproduction on the basis of the following points.
i) number of parental organism required
ii) nature offsprings produced
f) Justify what may happen if the cell cycle does not take place properly.
g) Why is alteration of generation important in ferns?
h) You are given a tall pea plant bearing violet flowers . Deduce the probable genotype of the pea plant.
i) With the help of a cross calculate the percentage of normal children produced from a colour blind carrier mother and normal father.
j) Recall and write the phenotype and genotypic ratio F₂ generation of a cross between a pure yellow round seeded pea plant with a pure green wrinkled seeded pea plant
k) Discuss the role of air sac in the adaptation of pigeon .
l) Recall the names of the gases used in Miller and Urey's experiment and write down the ratio in which they are used.
m) Justify with two reasons how modern horse has gradually evolved from its forerunners.
n) Why is ammonification considered to be an important stage in nitrogen cycle ?
o) Why is Sundarban called a biosphere reserve ?
p) Write two problems due to population explosion in your city.
q) Write two difference between in-situ and ex-situ conservation on the basis of
i) place of conservation
ii) access of public
Group - D
Write the six questions or their alternatives given below. The mark alloted for each question is 5 (the division of mark is either 3 + 2, 2 + 3 or 5):
4) Answer 6 questions or there alternatives given below: 5x6=30
a) Draw this structural and functional unit of nervous system and lebel 3+2=5
i) Dendron ii) Node of Ranvier iii) Schwann cells iv) Axon Hillock
OR
Draw a anaphase stage of animal cell division and label the following parts -
i) Centrosome ii) Chromosomal spindle fibre iii) Continuous spindle fibre iv) Chromatid
b) A baby is born a few days ago. Discuss the phases of growth taking place in its body. Mention which part of a flower develops into a fruit and which part into seed after fertilization takes place. 3+2=5
OR
You have brought a rose twig from your friend's house and planted it in your garden. Discuss the method you have adopted and why ? How will you differentiate between the cell division of a somatic cell and a reproductive mother cell on the basis of -
i) nature of the chromosome division
ii) number of daughter cell produced.
c) With the help of a checker board and showing cross upto F₂ generation exemplify how Mendel deduce his first law. State the law. 3+2=5
OR
Differentiate between Thalassemia and haemophilia on the basis of the following points -
i) type of chromosome affected
ii) symptom
Discuss what should be done to prevent birth of more children suffering from genetic diseases and how can you do it ?
d) How does camel resist dehydration in the desert condition ? Discuss the psychological adaptation of Sundari in the salt water condition.
OR
Discuss how wings of bat and birds indicate convergent evolution. There is a garbage dumping station at a place. Discuss what types of struggle for existence you may find there. 3+2=5
e) What is the need of conservation in today's world ? you have recently visited a sanctuary. Write two characteristics features you find typical to it. 3+2=5
OR
You live near the airport area. Deduce what pollution you face everyday and what are its effect on your body.
f) What criteria should you take into account to declare a place a hotspot ? you have been invited to deliver a speech in an awareness programme on Lung cancer. Discuss what you must include in your speech. 3+2=5
OR
List up the reasons behind the reduction in number of tigers in a forest. What steps should you take to overcome this ?
TEST PAPER - 2
SECTION - I (40 Marks)
(Compulsory: To be attempted by all candidates)
Question 1:
a) Name the following:
i) The cell organelle responsible for protein synthesis.
ii) An artery which carries deoxygenated blood.
iii) The type of vascular bundle in Dicot root.
iv) The kind of leaf in which the mesophyll is differentiated into upper palisade and lower spongy parts.
v) The instrument used to measure the rate of transpiration. (5)
b) Complete the following pairs to represent the relationship between the structure and the special functional activity:
i) White blood cell and _______
ii) Palisade cells of leaf_____
iii) ______ and translocation of food.
iv) _____ and transference of impulse from human eye to the brain.
v) Testis and _____. (5)
c) Complete the following statements by filling in the appropriate term. Rewrite the complete statements.
i) The duct which leads from the epidermis to the urethra is the ____.
ii) The swelling on a nerve in which the cell bodies of neurons are situated is termed _____
iii) The embryo in the uterus is protected from mechanical shocks or jerks by the___
iv) ATP stands for____
v) Light enters the eye through the aperture called____. (4)
d) The first pair in the following list indicates the kind of relationship that exists between both the items. Rewrite and complete and second pair on the similar basis :
e.g., Eye: sight:: Ear: hearing
i) Adrenal gland; Adrenil:: Thyroid : ____
ii) light reaction: grana:: dark reaction :_____
iii) chlorophyll : magnesium :: haemoglobin: ____
iv) right ventricle : pulmonary artery :: left ventricle : ____
v) brain: neuron:: kidney : ____. (5)
e) Name the following cells and state where in the human body they are found:
i) living cells without nuclei.
ii) Cells that conduct electric impulses .
iii) Cells that are haploid.
iv) Cells that are sensitive to different colours.
v) Cells that act as insulating layer and also storage. (5)
f) Name the organs in which this are located:
i) Iris (1)
g) Select the correct answer: (1)
i) Haemoglobin has affinity for
1) CO₂ 2) N₂ 3) O₂ 4) none
h) State whether the following statements are true or false:
i) Nocturnal creatures avoid light.
ii) Image is formed one blind spot.
iii) Cranial nerves arise from the brain.
iv) Two meninges cover the brain and the spinal cord.
v) abnormal working of rods causes nightblindness. (5)
Section II
(Answer any four questions from this section)
Question 2
a) On a bright sunny day water weeds growing in an aquarium were seen actively giving off bubbles of gas. Use this information to answer the questions that follow:
i) Name the process occurring in the water weed that has resulted in the evolution of these bubbles.
ii) Of what gas do these bubbles consists?
iii) Briefly describe the reactions occurring in the leaves of the water weeds, leading to the evolution of these bubbles.
iv) Give an overall balanced chemical equation to represent the process named in (i) above.
b) The diagram given represents a kidney cut open longitudinal.
Study the same and then answer the question that follow:
i) Name the structural and functional unit of the kidney.
ii) What is the region labelled 1 called?
What part of the above mentioned structure is found in this region?
iii) Name the part labelled 4. What is its function ?
iv) Name two nitrogenous substances that are excreted by the kidney.
Question 3
a) The diagram given represents an experimental set up to demonstration a vital psychological process.
Study the same and then answer the questions that follow:
i) Name the process.
ii) Define the above named process.
iii) What would you observe in the experimental setup after an hour?
iv) What control experiment can be set up for the above experiment?
v) Name any other substance that can be used instead of parchment paper in the above experiment.
vi) Mention two advantages of this process to plant.
b) i) Explain what is the meant by "pollution is a by-product of scientific advancement".
ii) State four measure in the control noise-pollution.
iii) Explain briefly that the balance of the nature is seriously affected by water-pollution.
iv) Which range of the loudness is painful to human ears.
Question 4
a) The figure is that of a nephron.
i) Label the parts 1 to 8.
ii) What is the liquid entering part 4 called ? Name two substances present in it that are reabsorbed in the 6.
iii) Name two substances present in the part labelled 1 which are not present in the part labelled 8.
.
b)i) Mention three reasons for the high birth rate in India.
ii) Mention two steps taken by the government of India to control population.
iii) What are antibiotics ? Give two examples of antibiotics.
Question 5
a) Give figure of a human foetus in the uterus.
i) level the parts marked 1 to 6.
ii) What is the function of the parts marked 6 and 4 ?
iii) Name any two substances transported by the part labelled 2 to the foetus .
iv) Name a hormone produced by the part labelled 4
b) 'A' is the diagram of a living plant cell:
i) Label the parts 1 to 4.
ii) Draw a diagram of this cell as it would appear after being placed in a concentrated salt solution for a few minutes.
iii) Account for the change shown in the given diagram (drawn )
iv) What scientific term would you give for the cell as it appears after being placed in salt solution ?
v) Name the substance present in the part labelled 2.
Question 6
a) In order to demonstrate a particular Phenomenon , a piece of potassium permanganate crystal was placed in a beaker containing water as shown in the diagram:
i) What phenomenon was being demonstrated.
ii) Define the above named Phenomenon .
iii) Would there be any observable change in the beaker after a few minutes ? If so describe the change.
iv) Redraw the above diagram so as to show how it would appear at the end of the experiment.
v) Give examples each in 1 plants , 2 animals, where this process occurs.
b) Give the difference between the following pairs on the basis of what is indicated in the brackets :
i) conditioned reflex and simple reflex (example)
ii) expired air and inspired air (% of oxygen)
iii) pleura and Pericardium (position)
iv) RBC and the WBC (structure)
Question 7
Given diagrammatic is a diagramatic section of the human brain as seen in a medium section. Study the same and then answer the questions that follow:
a) Name the part labelled 1. How are the brain cells arranged in this region ?
ii) What is the function of the part Marked 3?
iii) What type of gland is the pituitary ? Mention two characteristics of such glands.
iv) What term is used for the protective coverings of the brain?
v) The part labelled 4 is the medulla oblongota that continue as the spinal cord. Draw the transverse section of the spinal cord and label the following parts :
grey matter, white matter, spinal nerve, Central canal .
b) Answer briefly the following questions:
i) Why do xerophytes have thick cuticle ?
ii) What are biofertilizers ?
iii) What is meant by vaccination ?
iv) Why are most green leaves thin and broad ?
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