Which graph shows the effect of temperature on the rate of photosynthesis of the aquatic plants such as Elodea?
Solution is not given. At very low and high temperatures, the enzymes will be deactivated and photosynthesis or other reactions will not take place. The correct option is C as it shows the increase in rate of reaction with increasing temperature up to a point.
Study the given food web carefully. An increase in frog population is likely to cause_____.
1. Increase in the grasshopper population
2. Decrease in the lizard population
3. Increase in snake population
4. Decrease in hawk population
B2 and 4
C2 and 3
D1 and 3
Identify the festival being celebrated as shown in the given picture and tell how people celebrate this festival.
A They decorate trees with sweets and toys.
B They go to the mosques to offer prayers and eat meethi sewaian.
C They serve langar in the community.
D They throw coloured water on one another.
why that is a church
Two boys, P and Q are running along the same path. P is 10 m ahead of Q initially. However, Q catches up with P, after running 50 m. Assuming that both boys are running at a constant speed, what is the ratio of the speeds of P and Q?
A6 : 5
B5 : 6
C4 : 1
D4 : 5
Select the option that arranges the objects in ascending order of capacity.
A 1 L milk carton < 40 mL sunscreen tube < 10 mL test-tube < 60 mL coke bottle
B 10 mL test tube < 60 mL coke bottle < 40 mL sunscreen tube < 1 L milk carton
C 10 mL test tube < 40 mL sunscreen tube < 60 mL coke bottle < 1 L milk carton
D 60 mL coke bottle < 40 mL sunscreen tube < 10 mL test tube < 1 L milk carton
In our diet, we should have different nutrients in sufficient amounts. Select the option that gives correct order of amount of different nutrients required by our body.
A Carbohydrates < Proteins < Fats < Minerals
B Carbohydrates > Minerals > Proteins > Fats
C Proteins < Fats < Minerals < Carbohydrates
D Proteins > Fats > Minerals > Carbohydrates
Clothes last longer if they are cleaned properly when they get dirty. Which of the following is NOT the right way to clean clothes?
A Fresh ink stains on clothes can be removed with talcum powder.
B Oil and grease stains on clothes can be removed with petrol.
C Silk clothes and woollen clothes should be washed with strong detergent.
D All of these