Q2. (a) Explain how fertilizers are different from manure.
(b) What would you choose between manure and fertilizer to provide nourishment in your field and why?
Q3. Why do plant cells have an additional layer surrounding the cell membrane? What is this layer known as?
Q4. (a) Name two diseases that are caused by virus. (b) Write one important characteristic of virus.
Q5. PVC (polyvinyl chloride) is a thermoplastic and is used for making toys, chappals, etc. Bakelite is a thermosetting plastic
and is used for making electrical switches, handles of various utensils, etc. Write the major difference between these two
types of plastics?
Answers
Answer:
Manure- They are organ and are made in fields using cow dung. They contain high amount of humus.
Fertilizers- They are inorganic salt and can also degrade the soil. They contain high amount of plant nutrients and don't provide humus to the soil
Answer:
Answer
x
a) The main difference between the two is that manure is all-natural animal droppings while fertilizer may be natural but may also have chemicals and other unknown substances added to it. Synthetic fertilizers are usually combinations of chemicals that each provide a certain nutrient.
b)I would choose manure to provide naresh mint to the soil because
1 increase soil carbon and reduce atmospheric carbon levels.
2 reduce soil erosion and runoff.
3 reduce nitrate leaching.
4 reduced energy demands for natural gas-intensive nitrogen (N)
fertilizers.
4)a)Viral diseases
✅smallpox.
✅measles, mumps, rubella, chicken pox, and ✅shingles.
✅hepatitis.
✅polio.
b)Because most viruses are extremely well adapted to their host organism, virus structure varies greatly. However, there are some general structural characteristics that all viruses share. All viruses have a capsid or head region that contains its genetic material. The capsid is made of proteins and glycoproteins.
5)Bakelite is a thermosetting plastic and is used for making electrical switches, handles of various utensils, etc. Can you write the major difference between these two types of plastics? Answer: Thermoplastics get deformed easily on heating and can be bent easily on heating
________hope it helps you _______