For effective functioning of a bird's quill feather, ...
For effective functioning of a bird's quill feather, hooks fit on the ridge of the
Vane
rachis
barbules
barbs
Correct answer is C
No explanation has been provided for this answer.
Conservation of wild life is necessary mainly because ...
Which of the following crop diseases is caused by a fungus? ...
Starting from the skull end the vertebrate are arranged in the following order ...
Which of the following is the medium of transportation of nutrients with unicellular organisms? ...
Which of the following has cones? ...
The dorsal and anal fins of fish are used for ...
How many days is used for incubation to release a chick? ...
Which hormonal deficiency is likely to cause an accumulation of reducing sugar in the urine? ...
Which of the blood corpuscles are irregular and amoeboid ...
Which of the following statements is not Lamarck's postulate on evolution? ...