The mammalian gametes are male gametes called sperm or spermatozoa (singular = spermato-zoon), while...
Month: February 2023
Germination is a process by which the embryo of a seed grows out of...
The physical setting of Africa is defined by its relief, drainage, climate and vegetation,...
Parturition (labour) is the expulsion of the foetus, placenta and foetal membranes from the...
When the embryo has been implanted, it produces four extraembryonic membranes (membranes outside the...
Industrial enterprise in Nigeria can be broadly classified into (i) local arts and craft,...
It is possible to identify specific relief features on topographical maps by examining the...
The liver is the largest gland in the body. It is dark-red, spongy and...
The stomach is a thick-walled large muscular sac which lies in the left portion...
Experiment 1 Aim: To demostrate the action of ptyalin (saliva) on cooked starch. Method:...
Genetic traits are determined by genes located on the chromosomes. The sex of an...
Man cannot survive without water. The low population densities in the desert natural region...
A fracture is any break in a bone. There are two kinds of fracture...
Neurones are specialized cells that transmit impulses (messages) around the body in form of...
A bone is strong, hard and tough connective tissue mainly made of calcified material....