HARD
7th CBSE
IMPORTANT
Earn 100
The afferent arteriole is the arteriole that brings blood to the glomerulus. The efferent arteriole is the arteriole that carries blood away from the glomerulus. The diameter of the efferent arteriole is less than that of the afferent arteriole. What will be the consequences if the opposite structural quality will be performed by them?
Important Questions on Transportation in Animals and Plants
HARD
7th CBSE
IMPORTANT
Kidney transplantation is an ultimate procedure which is suggested for those patients who are undergoing haemodialysis for a longer period of time and whose one or both kidneys have failed. For carrying out this process, a suitable donor or closely related person from the family of the patient is chosen to donate the kidney. Do you think a donor can survive her life with a single kidney without any complications?
HARD
7th CBSE
IMPORTANT
The transport system in plants consists of two kinds of tissues A and B. The tissue A is made up of living cells and consists of two components P and Q. Component P has tiny pores in its end walls and contains only cytoplasm but no nucleus. On the other hand, component Q has cytoplasm as well as nucleus. The tissue B is made up of dead cells and consists of two components R and S. Component R has open ends whereas component S does not have open ends. In flowering plants, either only R or both R and S transport water but S is the only water-conducting tissue in non-flowering plants.
What is (i) tissue A and B (ii) component P, Q, R and S?
HARD
7th CBSE
IMPORTANT
Refer to the given figure of heart and select the correct option.
HARD
7th CBSE
IMPORTANT
The above diagram represents the enlarged portion of part of a lung where gaseous exchange occurs. What is this part called? Explain why red blood cells are not all the same colour in the diagram?
HARD
7th CBSE
IMPORTANT
Temperature is an external factor that influences the speed of diffusion. Generally, it is seen that plants are more likely to wilt in very hot weather. Do you think any relation exists in between? Explain your answer.
