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X is present in all eukaryotic cells except mammalian RBC, sieve tube cells of phloem and tracheids and vessels of xylem. X is ________.

A Nucleus
B Endoplasmic reticulum
C Mitochondrion
D Chloroplast

Select the INCORRECT statement from the following.

A There are more than 200 bones in our body.
B Muscles help us in movement.
C There are more than 600 muscles in our body.
D The place where two or more muscles join together is called joint.

Select the incorrect statement(s).
I. Rapid formation and breaking of bubbles in the bulk of a liquid being heated is called evaporation.
II. The spreading out and mixing of a substance with another substance due to motion of its particles is called diffusion.
III. Petrol evaporates faster than water because interparticle forces are stronger in water.
IV. Ice-cream feels colder than ice cold water because of latent heat of fusion.

A I and IV only
B I only
C II, III and IV only
D III and IV only

A cylinder is placed on a balance as shown in the figure. Water is poured into the cylinder and the reading of the balance is recorded for different heights of water in the cylinder.

Which graph correctly shows the variation of the balance reading (say m) with the height (say h)?


A
B
C
D

Choose among the following a country where silk industry began and a country which leads the world in silk production?

(A) China and India

(B) India and China

(C) India and India

Which of the following figures will complete the pattern in Figure (X)?



A

B

C

D

What is common among the given animals?


AThey all can respire through gills.
BThey all can respire through lungs.
CThey all can respire through skin.
DThey all can respire through mouth.

If '>' denotes '+', '<' denotes '–', '+' denotes '÷', '^' denotes '×', '–' denotes '=', '×' denotes '>' and '=' denotes '<', then which of the following options becomes correct?

A6 + 3 > 8 = 4 + 2 < 1
B4 > 6 + 2 × 32 + 4 < 1
C8 < 4 + 2 = 6 > 3
D14 + 7 > 3 = 6 + 3 > 2

Total number of bones in a new born baby is around ____.

A206
B209
C250
D300

Study the given classification chart.

Which one of the following most likely represents P, Q and R?

AP- Hen Q- Frog R- Snake
BP- Cow Q- Sparrow R- Rabbit
CP- Panther Q- Ant R- Jackal
DP- Jackal Q- Deer R- Monkey