User Forum

Refer to the given flow chart and select the option which correctly identifies P-S.

Which of the following statements is/are incorrect regarding lysosomes?
(i) Lysosomes are small vesicles which are bounded by a single membrane.
(ii) Lysosomes occur in all animal cells with the exception of red blood cells.
(iii) Lysosomes are called suicide bags because they contain hydrolytic enzymes.
(iv) The acidic conditions are maintained inside the lysosomes by pumping Na⁺ and K⁺ ions.

A(i) and (ii) only
B(ii), (iii) and (iv) only
C(iii) only
D(iv) only

Which of the following statements is incorrect regarding the plant meristems (P, Q and R) shown in the given figure?


ABoth P and Q are responsible for longitudinal growth of a plant.
BR is responsible for increase in the width of a plant.
CNucleus in cells of P and Q is small whereas that of R is large in size.
DCells of P, Q and R are compactly arranged without intercellular spaces.

The mass of a body X in air is 0.5 kg and mass of water container Y (with water in it) is 0.8 kg. When the body X is completely immersed in the water of the container Y the readings of the respective balances get changed as shown in the given figures. What is the value of P ?


A1.3
B0.85
C0.8
D0.55

The given figure shows changes in states of matter from one form to another. Identify the processes (1 - 5) involved in different steps.
Which of the following is evaporation, sublimation and condensation respectively?


A 3, 5, 2
B 2, 4, 3
C 2, 5, 1
D 3, 1, 4

Read the given paragraph where some of the words have been italicised and select the incorrect option regarding them.
Wool is a natural and non-biodegradable animal fibre. The wool used for production of pashmina shawl is Angora wool. Carding is the process in which fleece is removed from the body of an animal. Fleece is then thoroughly washed to remove the dust and dirt. This process is called scouring. Then the hair of different textures are sorted and burrs are removed from them. The clean wool fibres are then passed through rollers whose teeth untangle the fibres and this process is called reeling.

ANon-biodegradable should be replaced with biodegradable.
BCarding should be replaced with shearing.
CAngora should be replaced with Cashmere.
DThe positions of scouring and reeling should be interchanged. interchanged.

Which of the items above will allow you to see around a corner from where you are standing?

A(i) only
B(iii) only
C(i) and (ii)
D(i) and (iii)

An athlete completes half round of a circular track of radius R, then the displacement and distance covered by the athlete are, respectively ________.

A 2R and πR
B πR and 2R
C R and 2πR
D 2πR and R.

Refer to the given flow chart and identify P-S.

Now, select the option that correctly represents X and Y shown in the given figures.

An object is released from a height h. At a certain height, its kinetic energy is (³⁄₅)^th of its potential energy. The speed of the particle at that instant is

A
B
C
D