Consider the following statements regarding the recent global outbreak of 'Swine Flu'

1. The agent of infection is not well identified
2. The risk is higher in those who consume pork
3. It has a propensity to spread from contact with an infected person
4. The absence of an effective treatment or vaccine makes it risky for a global pandemic

Which of the statements given above is/ are correct?

• 1, 2 and 4

• 3 and 4

• 2 and 3

• 3 only

When dried raisins are put in plain water, they swell up. If put again in a brine solution, they shrivel up. This phenomenon indicates the property of:

• Diffusion

• Perfusion

• Osmosis

• Fusion

Consider the following items

1. Proteins, Carbohydrates, and Fats
2. Vitamins
3. Minerals
4. Water

Which of the above are considered as the constituents of food?

• 1,2 and 4 only

• 1 and 3 only

• 2 and 3 only

• 1, 2, 3 and 4

174.

Read the statements and choose the correct alternative.

Statement I: Autotroph plants contain the pigment chlorophyll for meeting their requirement of carbon and energy

Statement II: Photosynthesis is the process of converting water into food using sunlight and oxygen

• Both the statements are individually true and statement II is the correct explanation of statement I

• Both the statements are individually true but statement II is not the correct explanation of statement I

• Statement I is true but statement II is false

• Statement I is false but statement II is true

Read the statements and choose the correct alternative.

Statement I: Reproduction is the process by which living organisms produce young ones of their species. There are different forms of reproduction.

Statement II: Sex organs, male and female, are mandatory for reproduction

• Both the statements are individually true and statement II is the correct explanation of statement I

• Both the statements are individually true but statement II is not the correct explanation of statement I

• Statement I is true but statement II is false

• Statement I is false but statement II is true

Read the statements and choose the correct alternative.

Statement I: Human beings have 23 pairs of chromosomes, one of which is the sex chromosome and the remaining 22 autosomes. The X-linked diseases are related to mutations on a sex chromosome

Statement II: Colour blindness results from a mutation in X chromosome

• Both the statements are individually true and statement II is the correct explanation of statement I

• Both the statements are individually true but statement II is not the correct explanation of statement I

• Statement I is true but statement II is false

• Statement I is false but statement II is true