Refer to the given dichotomous key and select the incorrect option regarding P, Q, R, S and T.
AFibre Q is obtained from the non-feeding stage of an insect.
BFibre P does not melt on heating.
CFibre R can be used in winter clothing while fibre S can be used in making water-proof items.
D Fibre T can be obtained from Angora goat and has been nicknamed as diamond fibre due to its high luster and sheen.
nylon does melt
The given graph shows measurements of different types of blood vessels (X, Y and Z). Select the incorrect option regarding these.
ABlood vessels of type Y have valves.
BBlood vessels of type X carry blood away from the heart.
CBlood vessels of type Z connect an X to a Y.
DBlood vessels of type X are superficially placed and blood vessels of type Y are deep seated in the body.
there is no incorrect option in the given question
Refer to the given flow chart and select the correct option regarding P, Q, R and S.
AP could be duck-billed platypus or spiny ant eater.
BQ exhibits one non-feeding stage in its life cycle.
CR could be frog or hen.
DAll the stages of the life cycle of S are feeding and S could be beetle or botfly.
out of four stages in life cycle of frog , 2 are non feeding egg and pupa so option b is also wrong.
Four of Mrs. Singh's pupils made statements related to environment.
Which pupil made an INCORRECT statement?
AShuchi and Prerna only
CAnu and Shweta only
Study the given table.
Which of the following can be inferred regarding
the two surfaces?
ASurface X acts like a mirror.
BSurface Y may act like a mirror.
CSurface X reflects light better than surface Y.
DNone of these
Study the three similar glasses of tea that are placed on the table.
Which of the following statements are true about the glasses of tea X, Y and Z?
AThe tea in glasses X, Y and Z have the same amount of heat.
BThe tea in glasses X and Y have more heat than in glass Z.
CThe tea in glass X has more heat than glass Z.
DThe tea in glass Y has more heat than glasses X and Z.
Why are the days on different planets of different time period?
AThe planets revolve around the Sun in different orbits.
BThe planets rotate on their axis at different speeds.
CThe planets revolve around the Sun at different speeds.
DThe planets are at different distances from the Sun.