Some important events in the history of life on Earth are given below.

A. First dinosaurs appeared.

B. First reptiles appeared.

C. First insect fossils appeared.

D. First toothed birds appearance.

E. First wingless insect appeared.

F. Mammals like reptile arise

Match the above with the geological time periods and choose the correct combination,

#Question id: 3848

#SCPH06 I Botany

are small molecules that function as adapters between amino acids and codons.

#Question id: 6999

#SCPH28 | Zoology

The developmental precursors to the gonadal tissues of Caenorhabditis elegans uniquely contain ________.

#Question id: 5248

#SCPH28 | Zoology

Which of the following is a description of generalized transduction?

#Question id: 1083

#SCPH01 Biochemistry

 When a neuron responds to a particular neurotransmitter by opening gated ion channels, the neurotransmitter is serving as which part of the signal pathway?

#Question id: 11271

#SCPH06 I Botany

Autotrophs in the aquatic ecosystem, unlike their counterparts in the terrestrial ecosystem are mostly microscopic and very low in indigestible (to the herbivores) matter. Following some observation are given? 

A) Tropic level transfer efficiency is greater in aquatic ecosystem than terrestrial ecosystem  

B) Tropical forest herbivores have higher consumption efficiencies than grassland herbivores

C) Flow of energy and nutrient is rapidly in aquatic ecosystem than terrestrial

D) Production efficiency of higher tropic level is greater than lower tropic level