Answer: C) sulphur Explanation: In vulcanization, cruder rubber is heated with 3% sulphur at about for 1200C for 2-3 hours. Vulcanised rubber is a vastly improved product.

Answer: C) soft soaps Explanation:

Answer: C) Mitochondria Explanation: Mitochondria are known as 'Power House' of the cell because they produce energy in the form of ATP.

Answer: A) Chloroplast Explanation: The Chloroplast contains the wonder green pigment chlorophyll which is able to trap solar energy and use it for synthesis of food

Answer: D) identical twin Explanation: Though all living organisms  are made of protoplasm each individual has a different composition however slight it be. In identical twins the same cell divides into two and each one develops into one person. So the genitic make-up and type of protoplasm are exactly the same.

Answer: A) holozoic Explanation: The feeding mechanism is of several types. If it is entirely plant-like (photosynthesis),it is called holophytic. It is entirely (holo) animal-like (zoic), that is devouring already existing food, it is called holozoic.

Answer: C) coprophagous Explanation: The word coprodaeum refers to the last part of the elimentary canal.The excreta (undigested, matter) comes out of that part. So, the organisms that take in such materials are called coprophagous.

Answer: A) herbivorous Explanation: Herbivorous organisms are those that take for their food, plant parts like leaves raw in contrast to vegetarian, which means that plant products are taken raw or after being cooked.