Home
Class 12
BIOLOGY
mud Eel is ( siren lacertina ) has...

mud Eel is ( siren lacertina ) has

A

five pairs of both external gills and gills slits

B

four pairs of both external gills and gill slits

C

three pairs each of external gills and gill slits.

D

two pairs each of external gills and gill slits.

Text Solution

Verified by Experts

The correct Answer is:
c
Promotional Banner

Topper's Solved these Questions

  • AMPHIBIA-VERTEBRATES WITH DUAL LIFE

    DINESH PUBLICATION|Exercise check your grasp|10 Videos
  • ADOLESCENCE AND DRUG/ALCOHOL / TOBACCO ABUSE

    DINESH PUBLICATION|Exercise All Questions|206 Videos
  • ANATOMY OF PLANT PARTS

    DINESH PUBLICATION|Exercise BRAIN TEASERA -II|35 Videos

Similar Questions

Explore conceptually related problems

A police siren emits a sinusoidal wave with frequency f_s=300Hz the speed of sound is 340(m)/(s) . (a) find the wavelength of waves if the siren is at rest in the air. (b) If the siren is moving at 30(m)/(s) , then find the wavelength of the waves is front of and behind the source.

A police siren emits a sinusoidal wave with frequency f_(S) = 300 H_(z) . The speed of the sound is 340 m//s . (a) Find the wavelength of the waves if siren is at rest in the air . (b) If the siren is moving at 30 m//s , Find the wavelength of the waves ahead of and behind the source.

The disc of a siren containing 60 holes rotates at a constant speed of 360 rpm . The emitted sound is in unison with a tuning fork of frequency

A man sets his watch by the sound of a siren placed at a distance 1 km away . If the velocity of sound is 330 m//s

The disc of a siren containing 60 holes rotates at a constant speed of 360 rpm. The emited sound is in unison with a tuning frok of frequency

A ship steams towards a hill in the sea and sounds its siren and the echo is heard after 6 s. The siren is sounded again 3 minutes later after the first sounding and the echo is heard after 4 s. If the velocity of the ship is 6.87 kmph, calculate the velocity of sound in air.

If you set your watch by the sound of a distant siren, will it go fast or slow ?

The disc of siren has n holes and the frequency of its rotation is 300 rpm. It produces a notes of wavelength 2.4 m. If the velocity of sound in air is 360 m/s, then the value of n will be

You are at a street comer aud hear an ambulance siren. Without looking how can you tell when the ambulance passes by?