what is chlorophyll???
Answers
Answer:
Chlorophyll is any of several related green pigments found in the mesosomes of cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words χλωρός, khloros and φύλλον, phyllon. Chlorophyll is essential in photosynthesis, allowing plants to absorb energy from light.
Explanation:
ANSWER THE FOLLOWING: (Graph ) 1x8 =8
20. Varshika drew 6 circles with different sizes. Draw a graph for the relationship between the diameter
and circumference of each circle as shown in the table and use it to ( i ) . find the circumference of a
circle when its diameter is 6 cm. (ii ). Identify the type of variation .
Diameter (x) cm 1 2 3 4 5
Circumference (y) cm 3.1 6.2 9.3 12.4 15.5
21. The following table shows the data about the number of pipes and the time taken to till the same tank
No.of pipes (x) 2 3 6 9
Time taken (in min) (y) 45 30 15 10
Draw the graph for the above data and hence
( i ). Find the time taken to fill the tank when five pipes are used
(ii ). Find the number of pipes when the time is 9 minutes .