Maharashtra SSC Class 10 Science and Technology II March 2022 question paper

Maximum marks 40 · Time 2 hours

Try each question first, then open its model answer. Where the paper offers a choice, both questions are shown with OR between them.

Q.1 (A)

1 mark each

Q.1 (A) (i)1 mark $Bones contain ____ amino acids.$
Tap an option to check your answer.
Q.1 (A) (ii)1 mark $Giant squirrel is an example of ____ threatened species.$
Tap an option to check your answer.
Q.1 (A) (iii)1 mark $Human being belongs to ____ class.$
Tap an option to check your answer.
Q.1 (A) (iv)1 mark $Organs like ____ can be donated after death.$
Tap an option to check your answer.
Q.1 (A) (v)1 mark $Volcano is a ____ disaster.$
Tap an option to check your answer.

Q.1 (B)

1 mark each

Q.1 (B) (i)1 mark $Find the odd one out: Earthquake, Flooding, Tsunami, War$
Q.1 (B) (ii)1 mark $State true or false: Oxidation of proteins is carried out in aerobic respiration.$
Q.1 (B) (iii)1 mark $Complete the correlation: Western ghat : Asiatic lion : : Sunderban sanctuary : ____$
Q.1 (B) (iv)1 mark $Which type of fuel is used in thermal power plant?$
Q.1 (B) (v)1 mark $Identify the picture and name it.$

Q.2 (A)

2 marks each · attempt any 2

Q.2 (A) (i)2 marks $Give scientific reason: Cell division is one of the important properties of cell and organisms.$
Q.2 (A) (ii)2 marks $Give scientific reason: Cockroach belongs to phylum Arthropoda.$
Q.2 (A) (iii)2 marks $Give scientific reason: Power generation plant based on natural gas is eco-friendly.$

Q.2 (B)

2 marks each · attempt any 3

Q.2 (B) (i)2 marks $Complete the following diagram (chart of 'Evidences of Evolution' — two boxes, 'Morphological' and 'Similarities in bone structure', are given and four boxes are blank).$
Q.2 (B) (ii)2 marks $What do we learn from the story of Jadav Molai Payeng?$
Q.2 (B) (iii)2 marks $Distinguish between sexual reproduction and asexual reproduction. (two points)$
Q.2 (B) (iv)2 marks $Define genetically modified crops and give any two examples.$
Q.2 (B) (v)2 marks $What are vitamins? Write two types of vitamins.$

Q.3

3 marks each · attempt any 5

Q.3 (i)3 marks $Explain the meanings of the following symbols: (1), (2) and (3).$
Q.3 (ii)3 marks $Write any three characteristics of class Reptilia.$
Questions on the microbial production of cheese.
Q.3 (iii) (1)3 marks $Which substance is used to produce cheese?$
Q.3 (iii) (2) $Which enzyme was used earlier for cheese production?$
Q.3 (iii) (3) $Which enzyme is used to produce vegetarian cheese?$
Refer to the diagram showing a single unspecialised cell which, on division, gives rise on one branch to identical copies of itself and on the other branch to several different specialised cells (a block of epithelial/muscle cells, red blood cells, a muscle fibre, a nerve cell and liver-type cells).
Q.3 (iv) (1)3 marks $Which process is shown in the given diagram?$
Q.3 (iv) (2) $What is the importance of this process?$
Q.3 (iv) (3) $Which organs can be transplanted by this process?$
Q.3 (v)3 marks $What is meant by disaster? Write any two examples of each natural and man-made disaster.$
Q.3 (vi)3 marks $Write the objections raised against Darwin's theory of natural selection.$
Refer to the cyclic picture showing: 'Solar energy + $\text{CO}_2$ ' absorbed by trees (Biomass), then Harvesting, Threshing, Cellulose, 'Conversion of cellulose to glucose', Sugars, 'Liquid fuel production through fermentation', Biofuel used in a car, a truck and an aeroplane, each releasing $\text{CO}_2$ which returns to the plants.
Q.3 (vii) (1)3 marks $Which process is shown in the above given picture?$
Q.3 (vii) (2) $Give two examples for liquid fuels and solid fuels obtained by this process.$
Printed on the paper as sub-question 'vi.' of Q.3, but 'vi.' has already been used earlier in Q.3 (Darwin's theory), so this is the eighth sub-question of Q.3 — a printing/numbering error in the source paper.
Q.3 (viii) (1)3 marks $Complete the stages in electric generator using wind energy (a flow chart of four boxes joined by arrows).$
Q.3 (viii) (2) $Write limitations in an electric generator using wind energy.$

Q.4

5 marks each · attempt any 1

Q.4 carries an internal choice — the candidate answers any ONE of Q.4(i) or Q.4(ii).
Q.4 (i) (a)5 marks $Sketch and label the essential and accessory whorls of flower.$
Q.4 (i) (b) $What is pollination?$
Q.4 (i) (c) $Give any two examples of agents of pollination.$
'What will you do?' — five situations, each to be answered with the action you would take. Q.4 carries an internal choice: the candidate answers any ONE of Q.4(i) or Q.4(ii).
Q.4 (ii) (1)5 marks $What will you do? You are spending more time on internet.$
Q.4 (ii) (2) $What will you do? Child of your neighbour is addicted to tobacco chewing.$
Q.4 (ii) (3) $What will you do? Your sister has become incommunicative.$
Q.4 (ii) (4) $What will you do? You have to use free space around your home for good purpose.$
Q.4 (ii) (5) $What will you do? Your brother studying in XII has developed the stress.$