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The given diagram shows four plants, J, K, L and M, growing in and around a pond.
Productivity of which of the following plants would be most affected if plant K multiplies rapidly?


AJ
BM
CL
DCannot be predicted

Select the correct statement regarding air.

AAir is a mixture of many gases - nitrogen (70%), oxygen (28%) and others including carbon dioxide (2%).
BWarm air being lighter always rises up.
COxygen in the air is required for burning.
DBoth B and C

Which of the following simple machines belongs to the type of simple machine to which X belongs?


ACrane
BSee-saw
CScrewdriver
DAxe

Select the option that correctly classifies biodegradable and non-biodegradable objects.
Biodegradable-----Non-biodegradable

ATable cloth---Human excreta
BStyrofoam cup---Wooden log
CJute rope---Ceramic bowl
DGlass bottle---Apple peel

Which of the following statements is/are correct about the given planets?

1. They are known as outer planets.
2. They all revolve around the Sun from West to East.
3. They are neither hot nor cold.
4. They all have moons except Neptune.

A1 only
B2 and 3 only
C2, 3 and 4 only
D1, 3 and 4 only

Study the given graph. Which river is most likely situated near an industrial area?


ARiver P
BRiver Q
CRiver R
DRiver S

Refer to the given figure showing the human digestive system and select the option to answer the following questions.

1. In which labelled part are the salivary glands present?
2. In which labelled part, the digested food is absorbed into the blood?
1------2

AB----C
BC----A
CA----D
DE----B

Rohan carried out an experiment to find out which kind of container is best for keeping the food hot. He put the same amount of food in four containers made of different materials which were of the same size and thickness and placed them in the same external conditions. The results of his experiment were recorded, as shown in the given graph.

Based on the results, which container, W, X, Y or Z, is the best for keeping the food hot?

AContainer W
BContainer X
CContainer Y
DContainer Z

In the given food web, P, Q, R, S, T and U are consumers.
Which Plant of the consumers are animal-eaters only?


AP and R
BQ and U
CS and T
DP and U

Select the correct match.

AFainting - Keep patient's head elevated
BBee sting - Apply a paste of baking soda and water
CCuts and wounds - Apply vinegar
DBurns - Apply hot oil