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Science and Technology 2 Model set 1 by shaalaa.com 2024-2025 SSC (English Medium) 10th Standard Board Exam Question Paper Solution

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Science and Technology 2 [Model set 1 by shaalaa.com]
Marks: 40 Maharashtra State Board
SSC (English Medium)
SSC (Marathi Semi-English)

Academic Year: 2024-2025
Date: March 2025
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General Instructions :

  1. All questions are compulsory.
  2.  Use of a 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 each MCQ, the correct alternative (A), (B), (C), or (D) with a subquestion number is to be written as an answer.
    For Eg. : (i) (A), (ii) (B), (iii) (C)
  6. Scientifically correct, labelled diagrams should be drawn wherever necessary.

[10]1
[5]1.A | Write the correct alternative :
[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: undefined - undefined
Chapter: [0.01] Heredity and Evolution
[1]1.A.ii

Giant squirrel is an example of ______ threatened species.

Endangered

Rare

Vulnerable

Indeterminate

Concept: undefined - undefined
Chapter: [0.04] Environmental Management
[1]1.A.iii

In a plant flower the female whorl is ______.

Corolla

Calyx

Androecium

Gynoecium

Concept: undefined - undefined
Chapter: [0.03] Life Processes in Living Organisms Part - 2 [0.15] The Life Cycle
[1]1.A.iv

Sponges have special cells present on their body, they are known as ______ cells.

Germ

Collar

Cnidoblasts

Ectodermal cells

Concept: undefined - undefined
Chapter: [0.06] Animal Classification
[1]1.A.v

Triple fusion involves ______.

Fusion of male gamete with female gamete

Fusion of tube nucleus with generative nucleus

Fusion of two polar nuclei

Fusion of second male gamete with two polar nuclei

Concept: undefined - undefined
Chapter: [0.03] Life Processes in Living Organisms Part - 2 [0.15] The Life Cycle
[5]1.B | Answer the following :
[1]1.B.i

Find odd one out:

Tail bone

wisdom teeth

ear pinna

appendix

heart

Concept: undefined - undefined
Chapter: [0.01] Heredity and Evolution [0.16] Mapping Our Genes
[1]1.B.ii

Find out the correlation :
White revolution : Increase in dairy production : : Green revolution : ____________

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

State whether True or False:

The chromosome number in germ cells producing the gametes are diploid.

True

False

Concept: undefined - undefined
Chapter: [0.03] Life Processes in Living Organisms Part - 2
[1]1.B.iv

What is the full form of UNEP?

Concept: undefined - undefined
Chapter: [0.04] Environmental Management
[1]1.B.v

I am the V shaped chromosome with central centromere and equal chromatid arms. What is my name?

Concept: undefined - undefined
Chapter: [0.02] Life Processes in Living Organisms Part -1
[10]2
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[4]2.A | Give scientific reasons (any two) :
[2]2.A.i

Give scientific reasons.

Why are oral rehydration solution given to people who experience loose motion?

Concept: undefined - undefined
Chapter: [0.02] Life Processes in Living Organisms Part -1
[2]2.A.ii

Give a scientific reason.

Why it is necessary to ban the use of plastic bags?

Concept: undefined - undefined
Chapter: [0.07] Introduction to Microbiology
[2]2.A.iii

Give a scientific reason.

Power generation plant based on natural gas is eco-friendly.

Concept: undefined - undefined
Chapter: [0.05] Towards Green Energy
[6]2.B | Answer the following (any three) :
[2]2.B.i

Answer the following question.

What is pollination? Explain the different types of pollination.

Concept: undefined - undefined
Chapter: [0.03] Life Processes in Living Organisms Part - 2 [0.15] The Life Cycle
[2]2.B.ii

Differentiate between pre-disaster management and post-disaster management.

Concept: undefined - undefined
Chapter: [0.1] Disaster Management
[2]2.B.iii

Observe the following picture and state what can be the outcome.

Concept: undefined - undefined
Chapter: [0.09] Social Health
[2]2.B.iv

Complete the flow chart:

Concept: undefined - undefined
Chapter:
[2]2.B.v

Complete the chart on production of beverages.

S. No. Fruit Microbe used Role of microbe used Name of beverage
(a) Caffea arabica ______ Separating seeds from fruit Coffee
(b) Theobroma cacao Candida, Hansenula, Pichia, Saccharomyces ______ Cocoa
Concept: undefined - undefined
Chapter: [0.07] Introduction to Microbiology
[15]3 | Answer the following (any five) :
[3]3.A

Label the body organization of human in the following figure:

Concept: undefined - undefined
Chapter: [0.06] Animal Classification
[3]3.B

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: undefined - undefined
Chapter: [0.06] Animal Classification
[3]3.C

Sketch and label the essential and accessory whorls of flower.

Concept: undefined - undefined
Chapter: [0.03] Life Processes in Living Organisms Part - 2 [0.15] The Life Cycle
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[3]3.D

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: undefined - undefined
Chapter: [0.07] Introduction to Microbiology
[3]3.E

Complete the following chart related to the components of the Ecosystem.

Concept: undefined - undefined
Chapter:
[3]3.F
[1]3.F.i

What are the components of the DNA molecule?

Concept: undefined - undefined
Chapter: [0.01] Heredity and Evolution [0.16] Mapping Our Genes
[1]3.F.ii

Define Heredity. Give two examples.

Concept: undefined - undefined
Chapter: [0.01] Heredity and Evolution [0.16] Mapping Our Genes
[1]3.F.iii

Answer the following questions:

What is meant by triplet codon?

Concept: undefined - undefined
Chapter:
[3]3.G

What is the importance of stem cells in medical science?

Concept: undefined - undefined
Chapter: [0.08] Cell Biology and Biotechnology
[3]3.H
[1]3.H.i

Define disaster.

Concept: undefined - undefined
Chapter: [0.1] Disaster Management
[1]3.H.ii

Mention the long term effects of disaster on society.

Concept: undefined - undefined
Chapter: [0.1] Disaster Management
[1]3.H.iii

What is a catastrophic disaster? Give an example.

Concept: undefined - undefined
Chapter: [0.1] Disaster Management
[5]4 | Answer any one of the following :
[5]4.A

Observe the figure and label it properly:

  1. What is the figure related to?
  2. Why are reflectors used?
  3. Draw a flow chart showing different stages in such a process.
  4. How is the process used to generate electricity?
  5. What other method can be used to generate electricity using the same energy source?

Concept: undefined - undefined
Chapter: [0.05] Towards Green Energy
[5]4.B

Answer the questions:

Ecosystem is formed by biotic and abiotic factors and their interactions with each other. Each factor plays very important role in the ecosystem.

  1. Name the different types of ecosystem. Give one example of each.
  2. What type of ecosystem is formed by ponds?
  3. What is the relationship between environment and ecosystem?
  4. How is environmental balance maintained?
  5. What is the impact of ecosystem destruction?
Concept: undefined - undefined
Chapter:

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