A car starts from A for B travelling 20 km an hour. 3/2 hours later another car starts from A and travelling at the rate of 30 km an hour reaches B 5/2 hours before the first car. Find the distance from A to B.

#Question id: 9594

#Unit 6. System Physiology – Plant

The first reaction that converts electron energy into chemical energy—What will happened in  the primary photochemical event—

#Question id: 3584

#Unit 8. Inheritance Biology

In a plant species, a segregating line (RR- Red, Rr- Pink and rr- white) that contains both homozygotes and heterozygotes at a locus can be made homozygous by repeated selfing for several generations. What is the proportional red flower in third generations of selfing, if the level of heterozygosity in generation '0' is denoted as 1?

#Question id: 3598

#Unit 8. Inheritance Biology

Mendel crossed, round tall pea plants RRTT with wrinkle dwarf rrtt. The F1 plants were all round tall. These F1 plants were selfing, following genotype are selected from F2 generation

A- RrTT       B- RrTt        C- RRtt 

Which of the following decreasing frequency of this genotype?

#Question id: 11515

#Unit 10. Ecological Principles

The statistical study of populations is called

#Question id: 5031

#Unit 11. Evolution and Behavior

Which era is known as the ʺage of reptilesʺ?