In plants, extra-chromosomal DNA is found in

• Nucleus
• Chloroplast
• Ribosome
• Golgi bodies
Correct Option: B  [ Chloroplast ]

Remark: In many cases, extrachromosomal DNA is contained in cytoplasmic organelles, such as mitochondria (animals), and in chloroplasts and plastids (plants).

Which is an example of pollution-free energy?

• Coal
• Wind energy
• Mineral oil
• None of these
Correct Option: B  [ Wind energy ]

Remark:

In coriander the useful parts are:

• roots &leaves
• leaves & flowers
• leaves & dried fruits
• flower& dried fruits
Correct Option: C  [ leaves & dried fruits ]

Remark:

Which layer of the atmosphere is nearest to the surface of the earth?

• Mesosphere
• Thermosphere
• Troposphere
• Stratosphere
Correct Option: C  [ Troposphere ]

Remark:

One kilometre is equal to how many miles?

• 0.84
• 0.5
• 1.6
• 0.62
Correct Option: D  [ 0.62 ]

Remark:

The digested food is absorbed in

• Stomach
• Intestine (small)
• Intestine (large)
• Colon
Correct Option: B  [ Intestine (small) ]

Remark:

Which of the following is a communicable disease?

• Measles
• Scurvy
• Asthma
• Diabetes
Correct Option: A  [ Measles ]

Remark:

What is the first artificial satellite to orbit Earth ?

• Sputnik I
• Explorer I
• Vanguard I
• Discoverer I
Correct Option: A  [ Sputnik I ]

Remark:

Nucleus is absent in

• Erythrocyre (Red Blood Cell)
• Cancer cell
• Stem cell
• Leucocyte (White Blood Cell)
Correct Option: A  [ Erythrocyre (Red Blood Cell) ]

Remark:

LASER is abbreviated form of :

• Light Absorption by Stimulated Emission of Radiation
• Light Absorption by Steady Emission of Radiation
• Light Amplification by Stimulated Emission of Radiation
• Light Amplification by Steady Emission of Radiation
Correct Option: C  [ Light Amplification by Stimulated Emission of Radiation ]

Remark: