KCSE 2018 ESSAY Q7 (A) DESCRIBE THE MODE OF REPRODUCTION IN A NAMED FUNGUS. (B) DESCRIBE THE ROLE OF HORMONES IN THE HUMAN MENSTRUAL CYCLE.
(a) Describe the mode of reproduction in a named fungus. Rhizopus/mucor/ mould; reproduce a sexually; by sporulation; spores develop from a single in the sporangium; which burst on maturity releasing spores; which are dispersed by air currents/ wind; germinating to form new generation / form mycelium (if it lands on a suitable medium); OR Yeast/saccharomyces/ schizo saccharomyces ; reproduce asexually; by budding; parent cells form an out growth/projection/bud; followed by division of nucleus into two; one of the nuclei moves into the new bud; which grow and develops into a new cell; (7 marks Max 5) (b) Describe the role of hormones in the human menstrual cycle. After/at the onset of menstruation (the anterior lobe) of the pituitary gland; secretes follicle stimulating hormone (FSH); The FSH causes the Graafian follicle; to develop in the ovary; and stimulate the ovary tissues to secrete oestrogen hormone; Oestrogen hormone brings about repair; healing of the...