Refer to the given paragraph.
The two main types of root are X and Y. X roots are mostly found in plants having leaves with reticulate venation, while Y roots are mostly found in plants having leaves with parallel venation.
Select the incorrect statement regarding X and Y.
A Radish, turnip and carrot are modifications of X.
B X is found in gram while Y is found in barley.
C X spreads horizontally hence cannot provide strong anchorage whereas Y penetrates very deep into the soil hence provides strong anchorage.
D In Y, primary root is short-lived while X has persistent primary root.
Refer to the given paragraph.
A body projected vertically from the earth reaches a height equal to earth's radius before returning to the earth. The power exerted by the gravitational force is greatest
AAt the highest position of the body.
BAt the instant just before the body hits the earth.
CIt remains constant throughout
DAt the instant just after the body is projected.
pl tell answer
The given figure shows the human digestive system. In which labelled part food is both masticated and partially digested?
Two blocks, I and II having equal mass are suspended through a pulley, as shown in the given figure.
As the knife cuts the thread
Ablock I will rise
Bblock II will fall
Cboth blocks will fall
Dboth blocks will rise
Kanav took two test tubes marked as I and II. In test tube I, he put calcium carbonate and hydrochloric acid while in test tube II, he put zinc granules and hydrochloric acid. He passed the gas coming out from both the test tubes in lime water. What would be his observation?
A The gas coming out from test tube I turned lime water milky.
B The gas coming out from test tube II turned lime water milky.
C The gases coming out from both the test tubes turned lime water milky.
D None of these.
it could have been simpler
A person exerts a horizontal force of 500 N on a box, which also experiences a frictional force of 100 N.
How much work is done against friction when the box moves a horizontal distance of 3 m?
(A) 300 J
(B) 1200 J
(C) 1500 J
(D) 1800 J
(500-400) multiply by 3=1200
Two magnets are shown in figure.
Choose the correct statement regarding the pole strength of the two magnets.
A Both X and Y have same pole strength
B Pole strength of X is greater than that of Y
C Pole strength of Y is greater than that of X
D Data insufficient
They haven't given which material the magnet is made up of
Swati take X fabric and burn it. She observes following properties of the fabric :
(i) It burns but does not melt.
(ii) It shrinks from flame.
(iii) It gives the odour of charred meat while burning.
(iv) It left residue after burning which is black, hollow, irregular bead that can be easily crushed to a gritty black powder.
(v) It is self extinguishing.
According to her observation, X could be
Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.
(i) Growing different crops in different seasons in the same field will deplete the nutrients of soil.
(ii) Freshly harvested grains must be dried before sowing.
(iii) Manures are mineral specific as they provide all the minerals needed by plant.
(iv) Broadcasting of seeds is done by seed drill.
According to me answer show be C