part 6

Question 1

commensalism and its example

Answer 1

one of the species is benefitted and the other one is neither harmed nor benefitted
eg., an orchid growing as an epiphyte on a mango branch and the barnacles on the back of a whale

Question 2

mutualism and it example

Answer 2

both the species are benefitted. best examples are found in the plant-animal relationships

Question 3

altitude sickness and its symptoms

Answer 3

Rohtang pass near Manali >3,500 m. symptoms are nausea, fatigue and heart palpilations because in low atmospheric pressure our body does not get enough o2

Question 4

how does our body solve the problem of altitude sickness

Answer 4

compensates the low O2 availability by increasing the production of red blood cell, decreasing the binding affinity of haemoglobin and by increasing breathing rate