Question

State five features of birds which show their adaptation for flying

Answer 1

aerodynamic body
beak
wings
light body
feathered body

Answer 2

the birds have undergone a number of adaptations which helped them to meet the requirement of a perfect flying animal.                                                             1. shape of the body:                                                                                              the streamlined compact,spindle shaped body which offers least resistance to air is the primary requisite of flight.                                                                          2. loss of weight:                                                                                                    the hollow bones are light, strong and pneumatic (air filled). Teeth are lost and so are the tail vertebrae. The urinary bladder and an ovary and an oviduct have also dissappeared.                                                   3. wings:                                                                                                                 fore limbs are modifies into wings which are moved up and down by strong flight muscle keeping the body float.                                                                    4. energy requirement:                                                                                          it is brought about by a rich oxygen supply to the tissues by a powerful heart and an extra ordinary respiratory system made efficient by the presence of many air sacs which are connected with lungs on one side and with the pneumatic bones on the other.                                                              5. maintenance of body temperature:                                                                Active muscular activity tends to rise the temperature of body which is kept within normal limits by the ventilating action of air sacs.                                                 HOPE THIS ANSWER WILL HELP YOU IF YOU LIKE IT PLEASE RATE IT.