Biology · May / June 2020 · Paper 61 · Question 2

line AB = 70 ±1 mm and line CD = 22 ±1 mm ;

(x)700 / 710 / 690 ;

0.03 mm ;;;

outline: has clear single lines without shading ;

size: occupies at least half the space available ;

details:

correct proportions sperm and ovum ;

shape of sperm – round / oval head and long tail ;

ovum labelled with label line touching the ovum ;

any three from:

ovum is larger than the sperm ;

ovum is round, sperm long and thin ;

ovum has rough surface, sperm is smooth ;

ovum has a uniform shape, sperm is wider at one end ;