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Consider the following statements about pesticide residue in our food chain:
1. It is introduced in the food chain by aquatic plants and animals.
2. These chemicals get accumulated progressively at each trophic level.
3. Human body accumulates minimum concentration of these chemicals.
Select the correct answer using the code given below:
With reference to heterotrophic eukaryotic organisms, Fungi, consider the following statements:
1. All fungus are parasites as they use host organism for food.
2. Lichens have a symbiotic relationship of blue-green algae and fungus.
3. Yeasts and mushrooms are varities of fungus.
Select the correct answer using the code given below:
If we study a cell under a microscope, we will come across which among the following bodies inside it?
1.
In the context of ‘immunity’ in human body, which of the following statements is/are correct?
1. Skin on our body is an example of innate immunity.
2. Acquired immunity is characterised by memory.
3. Injecting the microbes deliberately during immunisation induce passive immunity.
Select the correct answer using the code given below.
Consider the following statements about the ‘scattering of light’:
1. Very fine particles scatter mainly blue light while particles of larger size scatter light of longer wavelengths.
2. If the size of the scattering particles is large enough, then, the scattered light may even appear white.
Which of the statements given above is/are correct?
Consider the following sources of protein:
1. Meat
2. Fish
3. Egg
4. Milk
Select the correct sequence of the sources of protein mentioned above in human diet in terms of maximum protein content:
If an opaque object on the path of light becomes very small, light has a tendency to bend around it and not walk in a straight line. This effect is known as:
Read the following statements carefully and select the correct answer from codes given below:
1. Working of electric motors involves the electric effect of electric current.
2. Working of electric generators involves the magnetic effect of moving magnets.
Which of the statement(s) given above is/are correct?
The ‘Deepor Beel Wildlife Sanctuary’, recently seen in news, is situated in which of the following Indian states?
Consider the following statements with reference to the ‘magnetic field’ of a bar magnet:
1. Magnetic field is a quantity that has both direction and magnitude.
2. Inside the magnet, the direction of field lines is from its south pole to north pole.
3. Magnetic field-lines of two different magnets can intersect each other.
Which of the statement(s) given above is/are correct?