Maharashtra SSC Science and Technology Part 2 Board Paper July 2024

Q.1 (A)(i) Evolution means ....................... .

Q.1 (A)(ii) One of the rare species is ..................... .

Q.1 (A)(iii) The machine which converts the kinetic energy of wind to electrical energy is called ..................... .

Q.1 (A)(iv) Chemically, vinegar is ..................... .

Q.1 (A)(v) We get ..................... kcal energy per gram of proteins.

Q.1 (B)(i) Find odd man out :
Starfish, Snail, Frog, Amoeba

Q.1 (B)(ii) Match the correct pairs :

Q.1 (B)(iii) Write the correlation :
White revolution : Dairy : : Blue revolution : ................

Q.1 (B)(iv) Observe the diagram and identify the phylum :

[Diagram: a small, sac-like animal fixed to a base, with a tubular body and a ring of thin tentacles at the upper end, i.e. Hydra.]

Q.1 (B)(v) State, whether given statement is right or wrong :
Peer group influence is stronger in case of adolescents.

Q.2 (A)(i) Give scientific reason : Fibers are one of the important nutrients.

Q.2 (A)(ii) Give scientific reason : Though tortoise lives on land as well as in water, it cannot be included in class-Amphibia.

Q.2 (A)(iii) Give scientific reason : Hydroelectric energy, solar energy and wind energy are called renewable energies.

Q.2 (B)(i) Write down four benefits of Biotechnology.

Q.2 (B)(ii) Distinguish between Sexual reproduction and Asexual reproduction.

Q.2 (B)(iii) Observe the following diagrams and complete table :

[Diagram ‘A’: two multistoreyed buildings with deep cracks and broken walls, and the ground cracked — an earthquake. Diagram ‘B’: a snake biting a person’s leg.]

Table: Disaster → [blank] → Precaution → [blank] ; Snake Bite → Primary Stage → (1) [blank] (2) [blank]

Q.2 (B)(iv) Write down any two features of Industrial Microbiology.

Q.2 (B)(v) Complete the following flow chart :

[Concept map: ‘Need of Environmental Conservation’ in the centre with four boxes joined to it. Two boxes are already filled — ‘To maintain the balance in nature’ and ‘To solve the natural and artificial problems’. The other two boxes are blank.]

Q.3 (i) Write any three characteristic features of class “Aves”.

Q.3 (ii) (a) What are vestigial organs ?
(b) Write two names of some vestigial organs in human body.
(c) Write the names of those animals in whom same organs are used ? Give two examples.

Q.3 (iii) How energy is formed from oxidation of carbohydrates, fats and proteins ? Correct the diagram given below :

[Diagram to be corrected: at the top ‘Pyruvic Acid’; below it an empty box, then ‘Acetyl Co-Enzyme A’; below it an empty box; then ‘Glycolysis’ in the middle with ‘Lipid’ on its left and ‘Amino acids’ on its right; the bottom row has ‘Proteins’ under Lipid, ‘Kreb’s cycle’ under Glycolysis and ‘Fats’ under Amino acids. Arrows point upwards.]

Q.3 (iv) What is the meaning of the following symbols ? Write your role accordingly.

[Three symbols: (1) a person putting waste into a dustbin; (2) a hand switching off a plug point / electric switch; (3) a bicycle.]

Q.3 (v) Observe the diagram and answer the following questions :

[Diagram of a thermal power plant: fuel and air enter a boiler, the boiler is connected to a stack that sends combustion gases out; steam from the boiler turns a turbine which drives a generator; the turbine is connected to a condenser with warm water, a pump and a cooling tower that releases vapour and hot air, and cooled water returns to the condenser.]

(a) Which type of energy is created in the above diagram ?
(b) Which type of fuel is used in power plant ?
(c) State one problem created in such type of power plant.

Q.3 (vi) Explain the importance of Biopesticides in organic farming.

Q.3 (vii) Complete the following conceptual picture and write its uses in treatment of various diseases :

[Concept map: ‘Uses of stem cells’ in the centre box with three empty boxes joined to it — two on the upper sides and one below.]

Q.3 (viii) Which are three objectives of disaster management ?

Q.4 (i) (a) Draw well labelled diagram of female reproductive system. 2
(b) Which type of hormones are secreted in female reproductive system ? 1
(c) When does menopause period stop ? 1
(d) How many ovaries are there in female foetus at the time of birth ? 1

Q.4 (ii) Give two examples of each :
(a) Hobbies to reduce stress. 1
(b) Diseases endangering the social health. 1
(c) Physical problems arising due to excessive use of mobile phones. 1
(d) Activities under the jurisdiction of cyber crime laws. 1
(e) Write problems due to alcoholism. 1