Question
Sycon (Scypha), Spongilla (Freshwater sponge), and
Euspongia (Bath sponge) are examples of which phylum?Solution
These organisms belong to the phylum Porifera, which includes simple, non-moving animals known as sponges.
The instrument which uses sound waves to measure the depth of oceans is β
Heat stored in water vapour is β
How much calorie of energy is released by a boiled egg?
The instrument for measuring intensity of earthquakes is called β
Pulsars are :
What is the minimum distance required for an obstacle to produce a distinct echo?
Velocity of the sound is minimum in-
What is the audible frequency range?
Which of the following is equal to a measurement of 1 mA?
Among the following materials, which is not an insulator?