Differentiate between the following pairs on the basis of what is mentioned within brackets
Human Physiology (10)Differentiate between the following pairs on the basis of what is mentioned within brackets:
- Human skin cell and Human ovum (number of chromosomes)
- Sperm duct and fallopian tube (function)
- Red Cross and WHO (one activity)
- Rod cells and cone cells (pigment)
- LUBB and DUP (names of the valves whose closure produce the sound)
Answer
(i) Human skin cell : 46/ 23 pairs; Human ovum : 23
(ii) Sperm duct: Transports sperms from testis to urethra
Fallopian tube: Its funnel shaped opening receives the mature eggs from the ovary which are carried by it to the uterus/It is the site of fertilisation.
(iii) Red Cross:
– Extends relief to victims of any calamity like famine, fine, earthquakes, tsunamic
– Supplies blood
– Extends first aid
– Educates people in accident prevention
– Looks after maternal and child welfare centres
– Trains midwives, nurses
– Organises blood donation camps
– Arranges ambulance in emergencies
WHO:
– Supplies information about epidemic diseases
– Promotes projects for research on diseases
– Gives information about cancer research, vaccines, nutritional discoveries, nuclear hazards, drug addiction
– Suggests quarantine measures to prevent spread of diseases
– Lays pharmaceutical standards
– Organise campaigns for control of endemic and epidemic diseases.
– Funds health projects
– Makes health policies
(iv) Rod cells : Rhodopsin/ visual purple; Cone cells : Iodopsin/ visual violet
(v) Bicuspid and tricuspid valve; Semilunar valves