Maharashtra Board Class 10 Science and Technology Part 2 Important Questions 2027 (Repeated in Board Exams)

The causality behind the sudden changes was understood due to .......... principle of Hugo de Vries. (A) Appendix (B) Mutation (C) Transcription (D) Translocation

(a) Define vestigial organs. (b) Write names of any two vestigial organs in human body. (c) Write the names of any two vestigial organs which are non-functional in human beings but functional in other organisms.

State whether the following statement is True or False: Evolution is the gradual change occurring in living organisms over a long duration.

Complete the following diagram: Evidences of Evolution - Anatomical, .......... (complete the remaining evidences).

Complete the table: Sr.No | Protein | Name of Organ. (1) .......... - Bones (2) Insulin - ..........

Name the type of cells in which mitosis occur? Write four stages of karyokinesis.

Give scientific reason: Fibres are one of the important nutrients.

Give scientific reason: Sometimes, higher plants and animals too perform anaerobic respiration.

(a) What are vitamins? (b) Classify them according to their solubility. (c) Give one example of each type as per above classification.

Distinguish between Sexual reproduction and Asexual reproduction.

[context: diagram of human reproductive system] Observe the diagram given below and answer: (1) Write the name of the reproductive system in the above diagram. (2) Name any two glands in the above diagram. (3) Mention any one duct in the above system. (4) What is the length of a sperm? (5) Which hormone is secreted by the testes?

[context: flower diagram with parts A, B, C, D] Observe the diagram and answer: (a) Label the parts A, B, C, D shown in above diagram. (b) Write name of any one type of whorl. (c) Write any two components of Androecium. (d) Write any two components of Gynoecium.

Which of the following animals can regenerate its broken body part? (A) Cockroach (B) Frog (C) Sparrow (D) Starfish

Reorganize the following food chain: Grasshopper - Snake - Paddy field - Eagle - Frog.

Write a short note on environmental conservation.

Complete the concept map: Factors affecting environment - Natural factors (Ex. ..........), Manmade factors (Ex. ..........).

One of the rare species is .......... (A) Lesser florican (B) Red panda (C) Tiger (D) Shekhru

What is the meaning of the following symbols? Write your role accordingly. [context: recycle/reduce waste symbol, green-energy plug symbol, bicycle symbol]

Give scientific reason: Hydroelectric energy, solar energy and wind energy are called renewable energies.

Draw the flow chart showing step by step energy transformation in the following power plants: (a) Thermal Power Plant (b) Nuclear Power Plant (c) Solar Power Plant.

Which fuel is used in thermal power plant? What are the problems associated with this type of power generation?

Fill in the box with proper word: Kinetic Energy in wind -> .......... -> Electric energy.

Which fuels are obtained from biomass?

Bat is included in class .......... (A) Amphibia (B) Reptilia (C) Aves (D) Mammalia

Vinegar contains .......... acid. (A) acetic (B) lactic (C) tartaric (D) hydrochloric

Complete the paragraph with the help of words given in the bracket (Lactobacillus cremoris, Protease, Cow, Vegetarian, microbiological, rennet, Geobacter, Saccharomyces): Cheese is produced on large scale from the abundantly available .......... milk all over the world. First chemical and .......... tests of milk are performed. Some colours and microbes like Lactobacillus lactis, .......... and Streptococcus thermophilus are mixed with milk. It imparts sourness to the milk. After this, to impart the dense texture, whey needs to be removed. An enzyme .......... obtained from alimentary canal of cattle was being traditionally used earlier. However an enzyme .......... obtained from fungi is used at present to produce .......... cheese.

What is meant by stem cells? Write any two uses of stem cells.

Give two commercial applications of Biotechnology.

Write the correct co-relation: Diabetes : Insulin : : Cancer : ..........

(a) Write the names of any six factors affecting social health. (b) What will you do? Why? Your brother studying in XII has developed the stress.

Write the correct word in the blank spaces: Hobbies to reduce stress - .......... (four boxes).

Solve the following crossword: (1) Continuous consumption of alcoholic and tobacco materials. (2) This app may cause cyber crimes. (3) A remedy to resolve stress. (4) Requirement for stress free life.

Write any two objectives of disaster management.

Write the names of any six materials in first aid box.