In the primitive atmosphere which was not available in free state?
In the primitive atmosphere which was not available in free state? Options (a) CH₄ (b) H₂ (c) O₂ (d) H₂O…
6 years ago
BHU2002
Institute of paleobotany is situated at
Institute of paleobotany is situated at Options (a) Delhi (b) Allahabad (c) Lucknow (d) Aurangabad Correct Answer: Lucknow Explanation: The…
6 years ago
Organic evolution is
Organic evolution is Options (a) continuous process (b) discontinuous process (c) initially discontinuous, now continuous (d) initially continuous, now discontinuous…
6 years ago
The pollutants released by jet planes are
The pollutants released by jet planes are Options (a) fogs (b) smogs (c) colloides (d) aerosols Correct Answer: aerosols Explanation:…
6 years ago
The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin
The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen, approximately by…
6 years ago
Which of the following sets of cell organelles contains DNA?
Which of the following sets of cell organelles contains DNA? Options (a) nucleus,ribosomes and chloroplasts (b) nucleus,ribosomes and mitochondria (c)…
6 years ago
C₄ plants have an advantage over C₃ plants when the weather is
C₄ plants have an advantage over C₃ plants when the weather is Options (a) only hot (b) hot and dry…
6 years ago
Broca’s area in human brain controls
Broca's area in human brain controls Options (a) Movement of tongue (b) breathing and hiccup (c) Movement of vocal chords…
6 years ago
Emasculation is achieved by the removal of
Emasculation is achieved by the removal of Options (a) entire gynoecium (b) stigma (c) anthers (d) petals and sepals Correct…
6 years ago
2,4-D is an effective
2,4-D is an effective Options (a) fungicide (b) rodenticide (c) weedicide (d) wormicide Correct Answer: weedicideExplanation:No explanation available. Be the…
6 years ago