A food chain shows a sequence of organisms in a region through which energy from producer gets transferred.
In context to the above statement, how many mistakes are there in this food chain?
I can see only one mistake but answer is two. Where is the other one?
The main purpose of the implement shown in the figure is
A Digging the soil
B Digging out the plants from the soil
C Sprinkling water on the field
D Sowing the seeds.
How many such pairs of letters are there in the word WONDERS each of which has as many letters between its two letters as there are between them in the English alphabet?
can someone tell me
Which of these is not a use of ultrasound?
(A) Ultrasonic scanning during pregnancy to check the development of unborn babies
(B) Ultrasonic cleaning to remove the coating of tartar from your teeth
(C) Ultrasound for echo location to detect underwater objects or determine the depth of the water
(D) Ultrasonic treatment of tumours in patients suffering from cancer.
A man fires a gun 150 m from a cliff. A second man who is standing 300 m further away from the cliff hears the gun 1 second after he sees the flash. The second man will hear the echo from the cliff
(A) 1 second after seeing the flash
(B) 2 seconds after hearing the gun
(C) 2 seconds after seeing the flash
(D) 4 seconds after hearing the gun.
If + = 150, + + = 230 and + + = 220, then the value of 5 + = ____?__.
A young plant wilts when it is dug up, even if it is later re-planted at the same place. What can be the reason for this?
AThe leaves lose more water when the plant is replanted.
BThe roots cannot take up mineral salts because digging of soil decreases mineral content.
CThe stem cannot transport water because digging always causes it to break.
DThe surface area of the roots gets reduced on digging up.
how does the surface area reduce on digging up?
The hottest planet in the solar system is ____.
The ans. of this question is Venus because though Mercury is the closest planet to sun, Venus has atmosphere of carbon dioxide in which the hot air gets trapped.