When a person breathes out, what happens to the diaphragm and rib cage?
|A||Becomes flatten||Moves downwards
|B||Becomes flatten||Moves outwards
Read the given statements and select the correct option.
Statement 1 : Anaerobic respiration occurs in skeletal muscles of humans.
Statement 2 : Accumulation of lactic acid in the skeletal muscles lead to muscle fatigue.
ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true and statement 2 is false.
DBoth statements 1 and 2 are false.
A rectangular block of metal has an area A and height
h is resting on a table. If another block of area A/2
but height 2h of the same metal is placed on the table,
A The weight of the first block is greater than the second.
B The pressure on the table due to the second block is more.
C The pressure on the table due to the first block is more.
D The thrust due to the first block is more.
Refer to the given food web
and select the incorrect option
A V, W, X and U serve as top consumers in the given food web.
B The energy transferred from Q to U may be equal to or higher than the energy transferred from T to U.
C There are 12 food chains in the given food web, out of which 4 food chains have four trophic levels and rest have 3 trophic levels.
D Q, R, S and T are herbivores in the given food web.
Refer to the given flow chart and select the incorrect
option regarding it.
A If P is tap root, then it could be turnip whereas if P is adventitious root, then it could be Dahlia.
B If Q is water hyacinth, then it propagates by offsets whereas if Q is Colocasia, then it propagates by rhizome.
C R could be Bryophyllum or Kalanchoe that propagates through adventitious buds that develop in the marginal notches of leaves.
D P could be sweet potato, Q could be mint and R could be Begonia.