Class 9 Social Science · Chapter 1

Samacheer Class 9 Social Science - Evolution of Humans and Society - Prehistoric Period

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Chapter-wise textbook exercise answers for Evolution of Humans and Society - Prehistoric Period with validation-aware solutions.

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Sections in this chapter
I. Choose the correct answer 6II. Fill in the blanks 3III. Find out the correct statement 2IV. Match the following 2V. Answer the following briefly 8VI. Answer all the questions given under each caption 4
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1I. Choose the correct answer6 questions
Q.I.11. _____________ is genetically closest to humansv
  1. (a). Gorilla
  2. (b). Chimpanzee
  3. (c). Orang-utan
  4. (d). Great Apes
Solution

Genetic and molecular studies show that chimpanzees are the closest living relatives to humans.

Answer:

(b)

Q.I.22. The period that witnessed domestication of animals and cultivation of crops is called ________.v
  1. (a). Paleolithic
  2. (b). Mesolithic
  3. (c). Neolithic
  4. (d). Megalithic
Solution

The Neolithic period (New Stone Age) is characterised by domestication of animals and the beginning of systematic agriculture.

Answer:

(c)

Q.I.33. Direct ancestor of modern man was ____________.v
  1. (a). Homo habilis
  2. (b). Homo erectus
  3. (c). Homo sapiens
  4. (d). Neanderthal
Solution

Homo erectus is widely regarded as a direct ancestor of modern humans (Homo sapiens), showing key evolutionary advances such as upright posture and larger brain size.

Answer:

(b)

Q.I.44. _________ refers to the area covering Egypt, Israel-Palestine and Iraq.v
  1. (a). Great Rift Valley
  2. (b). Fertile Crescent
  3. (c). Solo river
  4. (d). Neander Valley
Solution

The Fertile Crescent is the region in the Near East that includes parts of modern-day Egypt, Israel-Palestine and Iraq and was an early centre of agriculture and civilization.

Answer:

(b)

Q.I.55. Sir Robert Bruce Foote, a geologist from England first discovered the ____________ tools at Pallavaram near Chennai.v
Solution

Sir R. B. Foote discovered Palaeolithic stone tools at Pallavaram, near Chennai, marking early evidence of human activity in South India.

Answer:

Palaeolithic tools (stone tools)

Q.I.88. Assertion (A): Many of the Mesolithic man sites are found nearby rivers and tanks. Reason (R): Irrigation management developed during Mesolithic period.v
  1. (a). A and R are correct and R explains A
  2. (b). A and R are correct but R doesn't explain A
  3. (c). A is correct but R is incorrect
  4. (d). A and R both are incorrect
Solution

A is correct — Mesolithic sites are often near water sources because hunter-gatherers relied on water and food resources. R is incorrect — large‑scale irrigation developed later (Neolithic and post‑Neolithic); Mesolithic people did not practice complex irrigation management.

Answer:

(c)

2II. Fill in the blanks3 questions
Q.II.33. _____________ is known as the Middle Stone Age, as it is placed between the Paleolithic and Neolithic.v
Solution

The Mesolithic (Middle Stone Age) lies between the Paleolithic and the Neolithic and shows transitional technologies and subsistence patterns.

Answer:

Mesolithic

Q.II.11. Hand axes and cleavers are the important tool types of the __________ culture.v
  1. (a). Microlithic
  2. (b). Paleolithic
  3. (c). Mesolithic
  4. (d). Neolithic
Solution

Hand axes and cleavers are characteristic of the Paleolithic (especially the Acheulian) technology.

Answer:

(b)

Q.II.22. The methods and techniques involved in the production of stone tools are called __________ technology.v
Solution

Techniques and methods for making stone tools are referred to as lithic technology (e.g., core and flake techniques).

Answer:

lithic (stone) technology

3III. Find out the correct statement2 questions
Q.III.1III. Find out the correct statement 1. (i) The concept 'survival of the fittest' contributed to the scientific understanding of human origins. (ii) The book "On the Origin of Species" was published by Herbert Spencer. (iii) Charles Darwin's theory of biological evolution connects with the process of natural selection. (iv) Geology is the study of lithic technology.v
  1. (a). (i) is correct
  2. (b). (i) and (ii) are correct
  3. (c). (i) and (iv) are correct
  4. (d). (ii) and (iii) are correct
Solution

From the textbook text: Herbert Spencer popularised the phrase 'survival of the fittest' but Charles Darwin's theory of biological evolution (and natural selection) underpins scientific understanding of human origins; Darwin authored On the Origin of Species (1859), not Spencer. Geology is the study of the Earth, not lithic technology. Therefore statements (i) and (iii) are correct.

Answer:

(i) and (iii) are correct.

Q.III.22. (a) Among the Great Apes Orang utan is genetically the closest to humans. (b) The ancestors to humans were called Hominins and their origins have been traced to Africa. (c) Flake canot be used for tool making. (d) Acheulian is the main block of stone from which small chips are flaked by using a hammer stone.v
  1. (a). a) is correct
  2. (b). a) and b) are correct (or similar - original options not fully distinct in source)
Solution

From the chapter: (b) is correct — hominins (human ancestors) have origins traced in Africa. (c) (correcting OCR) should read 'Flake can be used for tool making' — flakes are indeed used as tools (the text defines flake as a small chip removed from a core and used). (a) is incorrect — chimpanzees, not orangutans, are genetically closest to humans. (d) is incorrect/misstated: the 'core' is the main block from which flakes are struck; Acheulian refers to a hand-axe tradition, not the core itself.

Answer:

(b) and (c) are correct.

4IV. Match the following2 questions
Q.IV.1IV. Match the following 1. Palaeo anthropology - Teris 2. Hand axe tools - Venus 3. Images on stone and bone - Acheulian 4. Red sand dunes - Microliths 5. Stone artefacts of small size -v
Solution

OCR on the right-hand column was shifted. Based on chapter text: palaeoanthropology = study of human ancestors; Acheulian is the hand-axe tradition; small stone figurines of Venus-type occur as images on stone/bone (Venus figurines); 'teris' are the red sand dunes mentioned in Tamil Nadu sites; microliths are small stone artefacts.

#Correct match
1The study of the human ancestors (Palaeoanthropology)
2Acheulian (Hand-axe tools)
3Venus (Images/figurines on stone and bone)
4Teris (Red sand dunes)
5Microliths (Stone artefacts of small size)
Q.IVMatch the following 1. Palaeo anthropology - - Teris 2. Hand axe tools - - Venus 3. Images on stone and bone - - Acheulian 4. Red sand dunes - - Microliths 5. Stone artefacts of small size -v
Solution

Same OCR misalignment as other match item on page 22. Correct pairings: palaeoanthropology = study of human ancestors; Acheulian = hand-axe industry; Venus = small carved images on stone/bone; teris = red sand dunes (Tamil Nadu sites); microliths = small stone artefacts.

#Correct match
1The study of the human ancestors (Palaeoanthropology)
2Acheulian (Hand-axe tools)
3Venus (Images/figurines on stone and bone)
4Teris (Red sand dunes)
5Microliths (Stone artefacts of small size)
5V. Answer the following briefly8 questions
Q.V.11. Discuss how the age of speculation made humans become conscious and knowledgeable.v
Solution

As early humans began imagining, creating symbols and asking 'what if' questions, they developed language and shared beliefs. Cave art, ritual practices and storytelling preserved and transmitted knowledge across generations, leading to increased self‑consciousness and cumulative learning.

Answer:

The 'age of speculation' (development of symbolic thought) led humans to develop language, abstract thinking, art and rituals. These cognitive advances enabled planning, shared knowledge, innovation (tool-making, hunting strategies), and cultural transmission — making humans more self-aware and knowledgeable.

Q.V.1Discuss how the age of speculation made humans become conscious and knowledgeable.v
Solution

Symbolic behaviour (art, ritual, language) allowed concepts to be shared and passed on, fostering collective memory, technology improvement and reflective self-awareness.

Answer:

The emergence of symbolic thought and language (the 'age of speculation') led to art, rituals and storytelling, enabling abstract reasoning, planning and knowledge transmission — key to human consciousness and accumulated learning.

Q.V.22. Write a note on the impact of pastoralism on the prehistoric people in Tamil Nadu.v
Solution

Pastoralism provided reliable animal resources (meat, milk, hides), encouraged transhumance and trade, led to specialised herding groups, and influenced land use and burial customs. Evidence from megalithic sites in Tamil Nadu shows pastoral communities burying cattle-related offerings and using stone markers.

Answer:

Pastoralism introduced livestock herding, seasonal mobility, new diets and economic exchanges; it influenced settlement patterns, social organisation and funerary practices (including megalithic burials) in prehistoric Tamil Nadu.

Q.V.2Write a note on the impact of pastoralism on the prehistoric people in Tamil Nadu.v
Solution

Herding created economic specialisation and seasonal movement, promoted trade in animal products, and is reflected in megalithic burials and artefacts linked to pastoral communities.

Answer:

Pastoralism led to mobile herding economies, new resource use (dairy, hides), altered settlement/land-use patterns and influenced social and burial customs in prehistoric Tamil Nadu.

Q.V.3List out the features of Megalithic burial types.v
Solution

Features: 1) Use of large stones (megaliths) arranged in definite structures — dolmens (capstone on upright slabs), cists (rectangular stone boxes), cairns/barrows (piled stones or earth), menhirs (single standing stones) and stone circles/alignments. 2) Burials could be individual or collective and often included grave goods such as pottery, beads, metal tools and ornaments. 3) Construction shows regional styles and sometimes consistent orientation (e.g., east–west). 4) Associated with late prehistoric communities (Bronze/Iron Age) and often mark ritual/commemorative places.

Answer:

Megalithic burials used large stones and include types such as dolmens (stone table tombs), cists (stone-lined graves), cairns (stone mounds), menhirs (standing stones) and stone circles; they often contained more than one burial, contained burial goods (pottery, iron tools, ornaments), show regional variations in form and orientation, and belong mainly to the later prehistoric (Iron Age/late Bronze Age) period.

Q.V.3List out the features of Megalithic burial types.v
Solution

Features: 1) Use of large stones (megaliths) arranged in definite structures — dolmens (capstone on upright slabs), cists (rectangular stone boxes), cairns/barrows (piled stones or earth), menhirs (single standing stones) and stone circles/alignments. 2) Burials could be individual or collective and often included grave goods such as pottery, beads, metal tools and ornaments. 3) Construction shows regional styles and sometimes consistent orientation (e.g., east–west). 4) Associated with late prehistoric communities (Bronze/Iron Age) and often mark ritual/commemorative places.

Answer:

Megalithic burials used large stones and include types such as dolmens (stone table tombs), cists (stone-lined graves), cairns (stone mounds), menhirs (standing stones) and stone circles; they often contained more than one burial, contained burial goods (pottery, iron tools, ornaments), show regional variations in form and orientation, and belong mainly to the later prehistoric (Iron Age/late Bronze Age) period.

Q.V.4Examine the tool-making technical skills of Lower Paleolithic people.v
Solution

Technical skills: 1) Method — primarily direct hard-hammer percussion to detach flakes from a core. 2) Products — large core and flake tools: bifacial handaxes (Acheulian), cleavers, choppers, discoids and scrapers. 3) Skill indicators — selection of appropriate raw materials (basalt, quartzite, flint), control over striking platform and blow angle, ability to produce symmetrical bifacial tools, evidence of repeated technique and planning. 4) Limitations — tools were generally large and crude compared with later periods; little evidence of fine retouch, blade technology or hafting.

Answer:

Lower Paleolithic people used hard-hammer percussion to strike flakes from cores, producing large crude tools such as handaxes, cleavers, choppers and scrapers. They selected suitable raw materials, controlled striking angles to shape bifacial tools, and showed planning and standardization but limited fine retouch or blade technology.

Q.V.4Examine the tool-making technical skills of Lower Paleolithic people.v
Solution

Technical skills: 1) Method — primarily direct hard-hammer percussion to detach flakes from a core. 2) Products — large core and flake tools: bifacial handaxes (Acheulian), cleavers, choppers, discoids and scrapers. 3) Skill indicators — selection of appropriate raw materials (basalt, quartzite, flint), control over striking platform and blow angle, ability to produce symmetrical bifacial tools, evidence of repeated technique and planning. 4) Limitations — tools were generally large and crude compared with later periods; little evidence of fine retouch, blade technology or hafting.

Answer:

Lower Paleolithic people used hard-hammer percussion to strike flakes from cores, producing large crude tools such as handaxes, cleavers, choppers and scrapers. They selected suitable raw materials, controlled striking angles to shape bifacial tools, and showed planning and standardization but limited fine retouch or blade technology.

6VI. Answer all the questions given under each caption4 questions
Q.VI.11. The developments in the fields of agriculture, pottery and metal tools are considered a landmark in the life of Megalithic period - Substantiate.v
Solution

Agriculture provided stable food supply and supported population growth. Pottery allowed food storage, cooking and trade in goods. The introduction and improvement of metal tools (bronze/iron) increased agricultural productivity and craft efficiency. These technological and economic shifts led to greater social stratification, permanent settlements and complex burial practices (megaliths), marking a major cultural transformation.

Answer:

Agriculture, pottery and metal tools transformed society in the Megalithic period by enabling settled life, food surplus, craft specialisation and social complexity; pottery aided storage and cooking; metal tools improved farming and craft; together these changes supported larger communities and new burial/ritual practices.

Q.VI.1The developments in the fields of agriculture, pottery and metal tools are considered a landmark in the life of Megalithic period - Substantiate.v
Solution

Agriculture brought food surpluses and sedentism; pottery improved storage/cooking and trade; metal tools (iron/bronze) increased efficiency in farming and crafts. Together they changed economic organisation, led to craft specialisation and hierarchical societies, which is why they are considered landmark developments of the Megalithic period.

Answer:

These developments mark a shift to settled agricultural economies, specialised crafts and enhanced tools, producing social complexity, larger settlements and the distinctive megalithic burial traditions.

Q.VI.22. The history of humans is closely related to the history of the earth. Elucidate.v
Solution

Earth's geological epochs and climate fluctuations influenced habitat availability, food resources and migration routes. For example, ice ages forced human groups to adapt or migrate; changes in flora and fauna prompted technological and social innovations (tool types, agriculture). Thus human evolution and cultural development reflect and respond to Earth's changing environments.

Answer:

Human history is intertwined with Earth's history because geological and climatic changes (ice ages, sea-level shifts, volcanic events) shaped environments, which drove evolution, migrations and cultural adaptations of humans.

Q.VI.2The history of humans is closely related to the history of the earth. Elucidate.v
Solution

Geological events (tectonics, sea-level changes) and climate shifts (glacial/interglacial cycles) altered habitats and resource availability, driving adaptation and technological innovation. Human dispersal out of Africa, agricultural origins and later civilisational developments all occurred in response to Earth’s changing environment.

Answer:

Earth's climatic and geological history shaped ecosystems and migration routes, which in turn influenced human evolution, settlement, subsistence strategies and cultural change.