Exam Code: 842
P - 18
Self Assessment
Model Paper – 4 (2025-26)
Class : 8 –
Biological Science
Section – A :
Multiple Choice Questions (15 × 1 = 15)
ప్రతి ప్రశ్నకి నాలుగు ఎంపికలు ఉంటాయి మరియు ఒకటి మాత్రమే సరైన
సమాధానం.
1-A, 2-C, 3-C, 4-D, 5-A, 6-C, 7-C, 8-C, 9-C, 10-C, 11-C, 12-B, 13-C, 14-D, 15-A
B) Green Data
Book – గ్రీన్ డేటా బుక్
C) Blue Data
Book – బ్లూ డేటా బుక్
D) Yellow Data
Book – యెల్లో డేటా బుక్
Correct Answer
/ సరైన సమాధానం: A) Red Data Book
2. Which of the
following is not a natural cause of deforestation?
B) Severe
droughts – తీవ్రమైన కరువు
C) Grazing – జంతువులను మేపడం
D) Volcanic
eruption – అగ్నిపర్వత విస్ఫోటనం
Correct Answer:
C) Grazing
3. What do the
rock shelters in Satpura National Park help us understand?
B) Climate
change in forests – అడవుల్లో వాతావరణ మార్పులు
C) The life of
primitive people – ఆదిమానవుల జీవన విధానం
D) Tourist
activities – పర్యాటక కార్యకలాపాలు
Correct Answer:
C) The life of primitive people
4. Identify the
odd one from the following
B) Wildlife
Sanctuary – వన్యప్రాణి అభయారణ్యం
C) Reserve
Forest – రిజర్వ్ అడవి
D) Zoo – జంతు ప్రదర్శనశాల
Correct Answer:
D) Zoo
5. Based on the
above details, what kind of bird is a dodo?
A) 1 and 2 – 1 మరియు 2
B) 2 and 3 – 2 మరియు 3
C) 3 and 4 – 3 మరియు 4
D) All the four
– పై అన్నీ
Correct Answer:
A) 1 and 2
6. A Horse and
a Donkey can mate and produce a mule… What does this show?
B) Mule is new
species – మ్యూల్ కొత్త జాతి
C) Horse and
Donkey are different species – వేర్వేరు జాతులు
D) Mule can
form its own population – మ్యూల్ తన జనాభా ఏర్పరచగలదు
Correct Answer:
C)
7. Whose
actions will most directly help in reducing deforestation?
B) Rohan only –
రోహన్ మాత్రమే
C) Nisha and
Rohan – నిషా మరియు రోహన్
D) Nisha, Rohan
and Mohan – నిషా, రోహన్ మరియు
మోహన్
Correct Answer:
C)
8. If climatic
conditions become suitable throughout the year, migration will?
B) Migrate to
colder regions – చల్లని ప్రాంతాలకు
C) Migration
may reduce or stop – వలస తగ్గవచ్చు లేదా ఆగిపోవచ్చు
D) Stop
reproducing – సంతానం ఆపేస్తాయి
Correct Answer:
C)
9. Why does
Siberian crane migrate to Bharatpur?
B) Permanently
settle – శాశ్వత నివాసం
C) Avoid
extreme cold and breed – చలిని తప్పించుకొని సంతానం
D) Explore new
food – కొత్త ఆహారం
Correct Answer:
C)
10. Introducing
new species into endemic habitat will?
B) Easily adapt
– సులభంగా అనుకూలం
C) May become
endangered – ఆపదలో పడుతుంది
D) Migrate – వలస వెళ్తుంది
Correct Answer:
C)
11. Responsible
human behaviour towards forests?
B) Plant
non-native species randomly
C) Plant more
trees to replace cut trees
D) Clear
forests for quick needs
Correct Answer:
C)
12. Variety of
plants, animals and microorganisms in a habitat is called?
B) Biodiversity
– జీవ వైవిధ్యం
C) Ecosystem – ఆవరణ వ్యవస్థ
D) Population –
జనాభా
Correct Answer:
B)
13. Assertion
& Reason
B) Both false
C) A true, R
false
D) A false, R
true
Correct Answer:
C)
14. If all
predators are removed, what happens first?
B) Plants grow
quickly
C) No effect
D) Herbivores
increase
Correct Answer:
D)
15. Animal
product from forest?
B) Resin – రెసిన్
C) Gum – జిగురు
D) Medicines – ఔషధాలు
Correct Answer:
A)
Section – B
16. What is meant by ‘Endangered species’? Give one example.
Species that are on the verge of extinction are called endangered species.
Example: Tiger
17. Why is it harmful if the top layer of soil gets exposed?
If the top layer of soil gets exposed:
-
It leads to soil erosion.
-
It causes desertification.
Section – C
18. Classify the following into Flora and Fauna
Flora:
Sal, Wild mango, Jamun tree, Fern
Fauna:
Bison, Indian giant squirrel, Leopard, Wild dog
19. Forest area is cleared for building roads and houses. Explain the consequences.
-
Loss of biodiversity
-
Increase in global warming
-
Increase in soil erosion
-
Decrease in rainfall
Section – D
20 A. List four human activities that disturb biodiversity and how they can be checked
-
Deforestation → Afforestation
-
Hunting → Strict implementation of wildlife laws
-
Introduction of invasive species → Creating awareness
-
Industrialisation → Sustainable practices
OR
20 B. Eight activities to maintain the green wealth of a locality
-
Plantation
-
Avoid cutting trees
-
Reduce paper waste
-
Use recycled paper
-
Prevent overgrazing
-
Create awareness among people
-
Organise community plantation drives
-
Promote social forestry