Question

1. What is Cognogeny ?
2. Name the causal organism of amoebic dysentery.
3. How many primers are required on leading strand during DNA replication?
4. Name the plant from which opium is obtained.

Answer 1

1. Cognogeny is the  Diversification of protozoa into metazoa, metaphyta and various other character.
2
2. The causative agent of amebic dysentery, Entamoeba histolytica, is found in the intestine of infected individuals, in whom it forms cysts that pass to the outside in feces
3. It is required for DNA replicationbecause the enzymes that catalyze this process, DNA polymerases, can only add new nucleotides to an existing strand of DNA. Thepolymerase starts replication at the3′-end of the primer, and copies the opposite strand.
4. opium poppy  (scientific name: Papaver somniferum) the plant from which opium is obtained.