Mass extinction of the end of Mesozoic era was probably due to ?

Related MCQs

• Mesozoic era is associated with mass extinction of ______.
• Mesozoic era is called golden period of ______.
• Which reason is responsible for extinction of host fish and parasites.
• Which is the main cause of extinction of wild life ? (CBSE – 1999)
• The era called ‘age of prokaryotic microbes’ is ______.
• Pick up the correct match I. Core of the earth A. Archaeozoic era II. Life originated B. Fe-Ni III. Stromatolites C. Inter-micromolecular assembly IV. TMC is an example D. Photosynthesizing algae
• The Jurassic period belongs to the ............ era.
• Which of the following statement is/are correct for prophase of mitosis ? (i) At the end of this phase nuclear membrane and nucleolus disintegrate. (ii) At the end of this phase two chromosome and a centromere holding them together. (iii) This phase begins with the condensation of chromatids along their lengths.
• A. The first molecules formed for replicating cells were most probably RNA. R. This was proved by origin of ribozyme in 1987 by T. Cech in Tetrahymena.
• Temperature is very high but a plant is showing photosynthesis with normal rate, probably it would be