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Science and Technology 2 Balbharati Model Question Paper Set 3 2018-2019 SSC (Marathi Semi-English) 10th Standard [इयत्ता १० वी] Question Paper Solution

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Science and Technology 2 [Balbharati Model Question Paper Set 3]
Marks: 40Academic Year: 2018-2019
Date: March 2019

[10]1
[5]1.1
[1]1.1.i

Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................

Concept: Evidence of Evolution - Vestigial Organs
Chapter: [1] Heredity and Evolution
[1]1.1.ii

Select the two options in the 'B' group related to 'A' group.

‘A' Group 'B' Group
a) Salaam Mumbai Foundation a) Salaam Mumbai Foundation
  m) Freedom from Tobacco
  n) Laughter Club
  o) Help to improve student's lifestyle
Concept: Salaam Mumbai Foundation
Chapter: [9] Social Health
[1]1.1.iii

State whether true or false. If false, rewrite with the correct sentence.
"The disease related with the synthesis of insulin is heart disease."

True

false

Concept: Factors Disturbing the Social Health
Chapter: [9] Social Health
[1]1.1.iv

Answer in one sentence.
"The forest conserved in the name of god and considered to be sacred."

Concept: Heredity and Evolution
Chapter: [1] Heredity and Evolution
[1]1.1.v

Write the type of asexual reproduction shown in the figure.

Concept: Asexual Reproduction in Organisms - Budding
Chapter: [3] Life Processes in Living Organisms Part - 2
[5]1.2
[1]1.2.i

Re-write the statement by selecting the appropriate option.
Due to which similar characteristic honey bee and cockroach are included in the same phylum?

wings

three pairs of legs

jointed appendages

antenna

Concept: Kingdom Animalia - Invertebrate: Phylum Animalida
Chapter: [6] Animal Classification
[1]1.2.ii

Complete the statement by choosing correct options from below .

Transfer of information from molecule of DNA to mRNA is called as -- -- -- process.

Gene

Mutation

Translocation

Transcription

Gradual development

Appendix

Concept: Heredity and Evolution
Chapter: [1] Heredity and Evolution
[1]1.2.iii

Re-write the statement by selecting the appropriate option.
Citric acid used in production of beverages, toffees, chocolates is obtained by fermentation of ..................... by aspergillus niger.

grapes

sugar molasses

apple

coffee nuts

Concept: Fruit Processing
Chapter: [8] Cell Biology and Biotechnology
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[1]1.2.iv

Re-write the statement by selecting the appropriate option.
What will you do, if the domestic gas cylinder bursts?

Sprinkle water

Throw soil or sand

Cover the cylinder with wet bed sheet

Run away

Concept: First Aid and Emergency Action
Chapter: [10] Disaster Management
[1]1.2.v

Re-write the statement by selecting the appropriate option.
The solar lamp uses the ................... energy.

Heat

Wind

Light

Sound

Concept: Electric Energy Generation Using Solar Energy
Chapter: [5] Towards Green Energy
[10]2 | Attempt any five of the following
[2]2.1

Answer the questions by observing the following figure.
A) Write the name of the device shown in the accompanying diagram.
B) Write briefly the work of this device.

Concept: Generation of Electrical Energy
Chapter: [5] Towards Green Energy
[2]2.2

Write the factors affecting environment.

Concept: Environmental Conservation. Our Social Respocibility
Chapter: [4] Environmental Management
[2]2.3

Write two uses of biotechnology related to human health.

Concept: Biotechnology
Chapter: [8] Cell Biology and Biotechnology
[2]2.4

Identify the class of the animal shown in the figure and write any two characteristics.

Concept: Phylum - Echinodermata
Chapter: [6] Animal Classification
[2]2.5
[1]2.5.i

Write what the sign indicate.

Concept: First Aid and Emergency Action
Chapter: [10] Disaster Management
[1]2.5.ii

Write what the sign indicate.

Concept: First Aid and Emergency Action
Chapter: [10] Disaster Management
[2]2.6

Name the following method of solid waste management.

Concept: Sewage Management
Chapter: [7] Introduction to Microbiology
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[2]2.7

Distinguish between

Mitosis and meiosis.

Concept: Mitosis and Its Types
Chapter: [2] Life Processes in Living Organisms Part -1
[15]3 | Attempt any five of the following
[3]3.1

a) Explain in brief - Lamarck’s principle of ‘use or disuse of organs’.
b) Give two examples.
c) What are ‘acquired characters’?

Concept: Lamarckism
Chapter: [1] Heredity and Evolution
[3]3.2

Answer the following questions.

a) Why some living organisms have to perform anaerobic respiration?
b) Give examples of such living organisms.
c) What are the two steps of anaerobic respiration?

Concept: Energy Production in Microorganisms Through Anaerobic Respiration
Chapter: [2] Life Processes in Living Organisms Part -1
[3]3.3

If frog population in paddy fields declines all of a sudden,
a) What will be the effect on paddy crop?
b) Number of which consumers will decline and which will increase?
c) Name the Indian states where paddy is cultivated on a large scale.

Concept: Ecosystem
Chapter: [4] Environmental Management
[3]3.4

a) What is clean technology ?
b) Why is it essential to ban plastic bags?

Concept: Clean Technology
Chapter: [7] Introduction to Microbiology
[3]3.5

Observe the figure and answer the questions given below.
a) Name the reaction.
b) Where is this reaction used?
c) Which element is used in it?

Concept: Generation of Electrical Energy
Chapter: [5] Towards Green Energy
[3]3.6

Observe the figure and answer the questions given below.
a) To which phylum these organisms belong?
b) Name the substance with which their body is covered.
c) Name their organs of locomotion.

Concept: Phylum
Chapter: [6] Animal Classification
[3]3.7

Explain in brief - D.N.A. Fingerprinting. Give two examples where this technique is used.

Concept: Commercial Applications of Biotechnology
Chapter: [8] Cell Biology and Biotechnology
[5]4 | Attempt any one of the following
[5]4.1

Observe the figure and answer the questions given below.

a) What does the above figure indicate?
b) Which human organs are involved in this process?
c) Name the hormones responsible for this process.
d) After how many days these repetitive changes take place?
e) ‚A woman should stay away from others, as her body is impure during this process.‛ What is your opinion about this statement? Elaborate it.

Concept: Menstrual Cycle
Chapter: [3] Life Processes in Living Organisms Part - 2
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[3]4.2

Observe the figure and answer the questions given below.

a) What do these figures indicate?
b) Which gadgets can be misused for these?
c) Give two examples of such events.
d) Name the act amended by Government of Maharashtra to control such events.
e) What care should be taken by a person to avoid such events?

Concept: Cyber Crimes
Chapter: [9] Social Health
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