1. What happens if green leaves are coated with oil.
2. Do you think saprophytes help us in keeping the environment clean . How?
3. What is “PHOTOSYNTHESIS”
4. What are Autotrophs?
SECTION - II
5. Write the differences between Host and parasites.
6. Draw the diagram of stomata?
7. Adhvik said Mushroom is also a plant? Is he correct. How do you support him?
8.
a) Write an activity to prove. How light is essential during photosynthesis?
b) Write the differences between parasites and saprophytes?
9. Why are some plants called INSECTIVOROUS PLANTS?
Read the paragraph and answer the following questions:
The main Macro nutrients needed are Nitrogen, Potassium and Phosphorus. Plants
require nutrients in small amounts also called Micro nutrients. Micro nutrients are boron,
Zinc, Manganese. Plants absorb these nutrients elements from soil through roots.
1Q. What are Macro nutrients?
2Q. How do plants absorb nutrients?
3Q. What are Micro nutrients?
4Q. What are the uses of nutrients in plants?
Answers
Answer:
1. If the leaves of a plant are coated with oil, then stomata present on the surface of the leaf will get blocked. ... So, if stomata are blocked, gaseous exchange would be affected which would decrease photosynthesis. So the plant will eventually die.
2. Yes, Saprophytes help to clean the environment because they eat dead and decaying animals and plants . If they will not eat the dead and decaying animals and plants then the body of animals and plants started decompose so it will make very dirty in the forest so that's why Saprophytes help to clean the environment.
3. Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities.
4. Autotrophs are known as producers because they are able to make their own food from raw materials and energy. Examples include plants, algae, and some types of bacteria.
5. Parasite is an organism that lives on the surface or inside another organism and feeds on it. Host is an organism that serves as a source of food and habitat to a parasite. ... Parasites have negative effects on the survival and the physical condition of the hosts.
6. the daigram is shown up
7. --
8. Experiment:
Objective:
To show experimentally that light is essential for photosynthesis.
Apparatus and materials required:
A healthy potted plant, a petri dish, a beaker containing water, forceps, a water bath, a piece of wire gauze, a tripod, a burner, a box of matches, alcohol a strip of black paper, iodine solution and clips.
Theory:
ADVERTISEMENTS:
Photosynthesis is a biochemical process by which green plants s5mthesize simple sugar in the presence of sunlight using carbon dioxide from the atmosphere and water from the soil. This simple sugar (glucose) is later converted to starch.
6CO2 + 12H2O ChlorophyII / Sunlight C6H12O6 + 6H2O + 6O2

The most important factor for photosynthesis is light. The rate of photosynthesis depends on the quantity and quality of light. The chlorophyll molecule in green leaves absorb light, get excited and emit electrons. The emitted electrons are used in the production of adenosine triphosphate (ATP). Finally the solar energy is converted into chemical energy and stored in the glucose produced.
ADVERTISEMENTS:
The rate of photosynthesis is the maximum in the presence of red and blue lights, while in green light the rate is minimum because green light is reflected by the chlorophyll molecules.
Procedure:
1. Take the potted plant and keep it in a dark place for 2-3 days so that the leaves get destarched.
2. Cover a part of one of its leaves with the strip of black paper. Make sure that you cover both the sides of the leaf.
3. Now place this plant in sunlight for 3—4 hours.
4. Pluck the selected covered leaf and remove the black paper covering it.
5. Place this leaf in the beaker containing water and boil it for about 10 minutes.
6. Take out the leaf and now boil it in alcohol, using the water bath, for 10 minutes. This removes the chlorophyll.
7. Take out the leaf and wash it under running water.
8. Place this leaf in the Petri dish and put a few drops of iodine solution on it. Now observe the change in colour.

Observations:
The leaf turns blue-black except in the covered region. As this covered region did not receive light, photosynthesis did not occur. Hence no starch was formed there. The uncovered region received light and starch was formed there due to photosynthesis.
Result:
Light is essential for photosynthesis.
Precautions:
1. Before starting the experiment, the leaf must be distracted.
2. The leaf must be covered with black paper properly to prevent the entry of light.
...srry but i don't have so much time for answering all the questions... bcz i m too studying my own
if i would have time to fo all i would but i m bot javing more time
