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Science and Technology 2 Set 1 2019-2020 SSC (Marathi Semi-English) 10th Standard [इयत्ता १० वी] Question Paper Solution

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Science and Technology 2 [Set 1]
Marks: 40Academic Year: 2019-2020
Date & Time: 18th March 2020, 11:00 am
Duration: 2h
  1. All questions are compulsory.
  2. Use of calculator is not allowed.
  3. The numbers to the right of the questions indicate full marks.
  4. In case of MCQs [Q. No. 1(A)], only the first attempt will be evaluated and will be given credit.
  5. For every MCQ, the correct alternative (A), (B), (C) or (D) with sub-question number is to be written as an answer.
    For e.g. (i) (A), (ii) (B), (iii) (C).
  6. Scientifically correct, labelled diagrams should be drawn wherever necessary.

[10]1
[5]1.A | Choose the correct option and write its number for the following questions.
[1]1.A.i

Transfer of information from molecules of DNA to mRNA is called as ______ process.

Gene

Mutation

Translocation

Transcription

Gradual development

Appendix

Concept: Heredity and Evolution
Chapter: [0.01] Heredity and Evolution
[1]1.A.ii

Body breaks up into several fragments and each fragment starts to live as a new individual. This is ______ type of reproduction.

Budding

Fragmentation

Regeneration

Binary fission

Concept: Sexual Reproduction - Gamete Formation
Chapter: [0.03] Life Processes in Living Organisms Part - 2
[1]1.A.iii

Incomplete combustion of fuels leads to formation of _______.

Carbon monoxide

Carbon dioxide

Chlorofluorocarbon

Hydrogen sulphide

Concept: Electric Energy Generation and Environment
Chapter: [0.05] Towards Green Energy
[1]1.A.iv

The spindle fibres start appearing from _______ stage of karyokinesis.

Prophase

Metaphase

Anaphase

Telophase

Concept: Mitosis and Its Types
Chapter: [0.02] Life Processes in Living Organisms Part -1
[1]1.A.v

Salts which can be used as supplement of calcium and iron are obtained from ______ acid.

gluconic acid 

coagulation

amino acid

acetic acid

Clostridium 

Lactobacilli 

Concept: Products
Chapter: [0.07] Introduction to Microbiology
[5]1.B | Solve the following questions.
[1]1.B.i

Find odd one out:

Drying 

Salting 

Cooking 

Soaking with sugar

Concept: Fruit Processing
Chapter: [0.08] Cell Biology and Biotechnology
[1]1.B.ii

Write the correct co-relation:

Annelida: Earthworm :: Platyhelminthes: _______

Concept: Criteria for New System of Classification - Body cavity (Coelom)
Chapter: [0.06] Animal Classification
[1]1.B.iii

Tobacco containing substances cannot cause cancer of mouth and lungs.

True

False

Concept: Factors Disturbing the Social Health
Chapter: [0.09] Social Health
[1]1.B.iv

State the function of Testes.

Concept: Human Reproductive System - Male Reproductive System
Chapter: [0.03] Life Processes in Living Organisms Part - 2
[1]1.B.v

I am connecting link between Reptilia and mammals. What is my name?

Concept: Kingdom Animalia - Chordata: Vertebrata
Chapter: [0.06] Animal Classification
[10]2
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[4]2.A | Give Scientific Reasons. (Any two)
[2]2.A.i

Indians should follow family planning for controlling the population.

Concept: Reproductive Health
Chapter: [0.03] Life Processes in Living Organisms Part - 2
[2]2.A.ii

We feel exhausted after exercising.

Concept: Energy Production in Microorganisms Through Anaerobic Respiration
Chapter: [0.02] Life Processes in Living Organisms Part -1
[2]2.A.iii

Give scientific reason

Hydroelectric energy, solar energy and wind energy are called renewable energies. 

Concept: Hydroelectric Energy
Chapter: [0.05] Towards Green Energy
[6]2.B | Solve the following questions. (Any three)
[2]2.B.i

Complete the following chart:

Concept: Conservation of Environment
Chapter: [0.04] Environmental Management
[2]2.B.ii

Distinguish between Aves and Mammalia.

Concept: History of Animal Classification
Chapter: [0.06] Animal Classification
[2]2.B.iii

By observing the given picture, write any two effects of this disaster:

Concept: Effects of Disaster
Chapter: [0.1] Disaster Management
[2]2.B.iv

Which are various ways to minimize stress?

Concept: Stress Management
Chapter: [0.09] Social Health
[2]2.B.v

Complete the following conceptual picture:

Concept: Applied Microbiology
Chapter: [0.07] Introduction to Microbiology
[15]3 | Solve the following questions (Any five):
[3]3.A

Explain the importance of Anatomical evidences with examples.

Concept: Evidence of Evolution - Anatomical Evidances
Chapter: [0.01] Heredity and Evolution
[3]3.B
[1]3.B.i

What will you do? Why?

Child of your neighbor is addicted to tobacco chewing.

Concept: Unified Movement Against Tobacco.
Chapter: [0.09] Social Health
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[1]3.B.ii

What will you do? Why?

Your friend has developed the hobby of snapping selfies.

Concept: Communication Media and Excessive Use of Modern Technology
Chapter: [0.09] Social Health
[1]3.B.iii

What will you do? Why?

Your sister has become incommunicative. She prefers to remain alone.

Concept: Communication Media and Excessive Use of Modern Technology
Chapter: [0.09] Social Health
[3]3.C

Which precautions are necessary for proper decomposition of domestic waste?

Concept: Applied Microbiology
Chapter: [0.07] Introduction to Microbiology
[3]3.D

Observe the following diagram. Write the answers of the following questions.

  1. To which phylum does the animal included in the diagram belong?
  2. What is the exoskeleton made up?
  3. What is the symmetry?
Concept: Phylum - Arthropoda
Chapter: [0.06] Animal Classification
[3]3.E

Explain the following concept in short:

Surrogacy

Concept: Reproduction and Modern Technology
Chapter: [0.03] Life Processes in Living Organisms Part - 2

Explain the following concept in short:

In Vitro Fertilization (IVF)

Concept: Reproduction and Modern Technology
Chapter: [0.03] Life Processes in Living Organisms Part - 2

Explain the following concept in short:

Sperm Bank

Concept: Reproduction and Modern Technology
Chapter: [0.03] Life Processes in Living Organisms Part - 2
[3]3.F

Label the body organization of human in the following figure:

Concept: Criteria for New System of Classification - Grades of Organization
Chapter: [0.06] Animal Classification
[3]3.G

Make a table based on forms of energy and corresponding devices:

  Forms of Energy Devices
a. Electric _________
b. Mechanical Sewing machine, Bicycle
c. Thermal __________
d. _________ Solar cooker, Solar heater
Concept: Electric Energy Generation Using Solar Energy
Chapter: [0.05] Towards Green Energy
[3]3.H

Complete the paragraph using proper words:

(Mechanical, Rhizobium, Aquatic, Toxic, CO2, Nitrogen, Pseudomonas, Amoeba, Bacteria, Hydrocarbons)

Spilling of petroleum oil occurs in ocean due to various reasons. This oil may prove fatal and toxic to _______ organisms. It is not easy to remove the oil layer from surface of water by _______ method. However, bacteria like _______ spp. and Alcanivorax borkumensis have the ability to destroy the pyridines and other chemicals. Hence, these _______ are used to clear the oil spills, These are called as hydrocarbonoclastic bacteria (HCB). HCB decompose the _______ and bring about the reaction of carbon with oxygen. _______ and water is formed in this process.

Concept: Clean Technology
Chapter: [0.07] Introduction to Microbiology
[5]4 | Solve the following questions (Any one):
[5]4.A

Attempts at various levels are performed for conserving environment. Which role would you like to perform. Give two actions each:

  • Prevention
  • Control
  • Production
  • Awareness
  • Conservation
Concept: Conservation of Environment
Chapter: [0.04] Environmental Management
[5]4.B
[1]4.B.i

What is Biotechnology?

Concept: Biotechnology
Chapter: [0.08] Cell Biology and Biotechnology
[1]4.B.ii

Give one use of Biotechnology.

Concept: Biotechnology
Chapter: [0.08] Cell Biology and Biotechnology
[1]4.B.iii

Give one commercial use of Biotechnology.

Concept: Commercial Applications of Biotechnology
Chapter: [0.08] Cell Biology and Biotechnology
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[1]4.B.iv

Write two bacterial examples of biofertilizer.

Concept: Fertilizers
Chapter: [0.08] Cell Biology and Biotechnology
[1]4.B.v

Write two names of crops genetically developed.

Concept: Biotechnology
Chapter: [0.08] Cell Biology and Biotechnology

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Maharashtra State Board previous year question papers 10th Standard [इयत्ता १० वी] Science and Technology 2 with solutions 2019 - 2020

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