The oldest fossil record from India is of a blue green algae which is 2.9 billion years old. It is
Options
(a) Archaeospheroides (b) Archaeopteryx (c) Chlamydomonas (d) Stromatolites
Correct Answer:
Archaeospheroides
Explanation: […]
Cellulose digestion in termites is carried out by
Options
(a) Monocystis (b) Trichomonas (c) Trichonympha (d) Lophomonas
Correct Answer:
Trichonympha
Explanation:
No explanation available. Be the first to write the explanation for this […]
In bony vertebrates, the formation of bone is often preceded by the presence of a
Options
(a) chitin (b) starch (c) cartilage (d) platelets
Correct Answer:
cartilage
Explanation:
No explanation available. Be the […]
Coacervates belongs to category of
Options
(a) cyanobacteria (b) protozoans (c) molecular aggregates (d) molecular aggregates surrounded by lipid membrane
Correct Answer:
molecular aggregates surrounded by lipid membrane
Explanation:
No explanation available. Be […]
CH₃CH₂OH converts into CH₃CHO in the presence of
Options
(a) Na₂Cr₂O₇ and NaOH (b) Na₂Cr₂O₇ and dil H₂SO₄ (c) NaOH (d) Fe in presence of NaOH
Correct Answer:
Na₂Cr₂O₇ and dil H₂SO₄
Explanation: […]
Which of the following gene is responsible for biological nitrogen fixation
Options
(a) nitrogenase (b) Nif gene (c) yeast alanine t-RNA synthetase (d) RNA synthetase
Correct Answer:
Nif gene
Explanation:
No explanation available. […]
Which of the following communities is more vulnerable to invasion by outside animals and plants
Options
(a) temperature forests (b) tropical evergreen (c) oceanic island communities (d) mangroves
Correct Answer:
tropical evergreen
Explanation: […]
Energy transfers or transformations are never 100% efficient. This is due to
Options
(a) entropy (b) homeostatis (c) catabolism (d) anabolism
Correct Answer:
entropy
Explanation:
No explanation available. Be the first to write […]
Wilson’s disease is associated with the abnormal metabolism of
Options
(a) iron (b) potassium (c) iodine (d) copper
Correct Answer:
copper
Explanation:
No explanation available. Be the first to write the explanation for […]
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