Std 9 Science and Technology - 2 First term examination paper
Std 9 Science and Technology - 2
First term examination paper
Marks - 40
Q1. ( A ) Choose the correct alternative and write the alphabet corresponding to the correct answer.
( 5 Marks )
1. After the death of apex consumers, their energy becomes available to the _______
a. primary consumers b. Secondary consumers
c. sun d. decomposers
2., __________ is the most important device for information communication.
a. Computer b. Printer c. Scanner d. None of these
3. The acronym ABC used during fist aid procedures stands for _______
a. Airway, Breathing, Cardiac
b. Assessment, Breathing, Circulation
c. Airway, Breathing, Circulation
d. Airway, Body check, Cardiac
4. Which of the following is an algae ?
a. Bacteria b. Agaricus c. Spirogyra d. Nephrolepis
5. Yoghurt has a specific sour taste due to __________
a. lactose sugar b. lactic acid c. lactobacilli d. All of the above
( B) Answer the following questions. ( Marks 5 )
1. Fill in the blank:
Toxins of fungal origin are called ___________
2. Find the odd on out :
RAM, ROM, External memory, ALU
3. State whether true or false :
The gaseous type of bio-geochemical cycle is a speedier cycle than the sedimentation cycle.
4. Complete the correlation :
Kingdom Plantae : Autotrophic : : Kingdom Fungi : __________
5. Name the following :
The science that studies the inter-relationships between the various components of air,
natural cycles, geological movements of the earth and climate.
Q.2 (A) Give scientific reasons ( any two ) ( Marks 4 )
1. Plants in an ecosystem are called primary producers
2. Naphthalene balls are kept with clothes to be put away.
3. Equilibrium is necessary in the various bio-geo-chemical cycles.
( B) Answer the following ( any three ) ( Marks 6 )
1. Write the characteristics of pants belonging to division Bryophyta.
2. which are the 2 main components of a computer.
3. Draw a neat labelled diagram of a yeast cell.
4. Write a note on climatic factors.
5. Match the column :
Sr. no. A B C
1. Gymnosperms These plants mainly grow Tarmarind Water.
2. Angiosperms No natural covering on seed Fern Seeds are formed in fruits Cyeas
Q. 3 Answer any five of the following questions. ( 15 Marks )
1. How is vaccine produced ?
2. Write any 3 important processes of the nitrogen cycle.
3. State the scientific and eco-friendly methods of waste Managment.
4. Distinguish between monocots and dicots.
5. Explain in detail the inter-relationship between the food chain and food web.
6. Which criteria are used for classification of plants ? Explain with reasons.
7. Define antibiotics and write about its types with one example
8. Explain the role and importance of information communication in science and technology,
Q.4 Answer any one of the following. ( 5 Marks )
1. Explain any 5 principles of solid waste management.
2. Write down the modes of infection and the preventive measures against any 5 viral diseases.
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