Answer the following questions:
1. Why is the color of the leaf green? Write the importance of this pigment.
2. Explain the mode of nutrition in fungus.
3. Partial Parasites are green colored plants which can carry out photosynthesis,
then why do they depend on other animals for food?
4. Name the part of Alimentary canal where:
a) Water gets absorbed from undigested food.
b) Bile Juice is produced.
c) No digestion takes place.
d) Taste of the food is perceived.
5. What is the role of Mucus and Hydrochloric acid in Stomach?
6. Describe the phenomenon by which the amount of water is
balanced on earth.
7. Wells, dug to get groundwater often dry up after some time. Why? What
can be done to get water again in the well?
8. Why water is called the Universal solvent?
9. Water is considered as a compound and not a mixture. Give reason.
10. Explain two ways by which groundwater can be replenished.
11. A car travels with a speed of 60 Km/hr for 15 minutes and then with a
speed of 40 km/hr for the next 15 minutes. Find the total distance
covered by the car.
12. What would be the speed of a car, if it is covering a distance of 36000m
in 2 hrs? Determine its speed in km/hr and m/sec.
13. A simple pendulum takes 63 seconds to complete 30oscillations. Calculate
its time period.
14. On what factors does the speed of a moving object depend? Write
the relation between these factors.
15. If a body travels in a straight line and covers equal distance in equal time.
What kind of motion is it said to be? What is the shape of distance Vs time
graph in this kind of motion? Plot a graph for it.
Answers
Please mark it as the brainliest answer plsssssss....
Explanation:
1) Due to the presence of green pigments known as chlorophyll. It helps in the process of photosynthesis by absorbing sunlight.
2) The mode of nutrition in fungus is Saprophytic i.e they acquire their nutrients from dead and decaying organic matter.
3) As they require sufficient amount of some specific nutrients for performing the process of photosynthesis but they grow in an area where the soil lacks those nutrients thus they are dependent on other animals.
4 a) Large intestine
b) Liver
5) HCl - reacts on the food making it acidic and breaking it down.
MUCUS - protects the inner lining of the stomach
6) Hydrologic cycle
7) Due to continuous use of the water in the well the water gets completely used up thus results in getting dried up. In such situations we are dependent on either rain or the ground water.
8) It is called the universal solvent as every substance on this earth is soluble in it in some form or the other.
9) When 2 or more atoms combine chemically the substance formed is called compound thus water is a chemically combined compound of hydrogen and oxygen.
10) Water should be allowed to penetrate deep inside the water.Certain measurements should be made for a constant and equal use of water.
11) 25 km
12) 18 km/hr 5m/s
13) 2.1 per second
14) Distance and time ; more the distance more the speed and vice versa ; less the time more the speed and vice versa.
15) Uniform motion
