Ram went for his driving test. He has to answer many questions regarding this. He was able to give correct answers to all the questions, but was not able to read the numbers given in coloured circles. This was due to

1. colour blindness
2. myopia
3. hypermetropia
4. astigmatism

Which layer of eyeball is richly supplied with blood vessels for providing nourishment to the organ?

1. Sclerotic layer
2. Choroid
3. Retina
4. Cornea

The passage of white blood corpuscles through unruptured wall of blood vessels is known as

1. diapedesis
2. haemopoiesis
3. phagocytosis
4. cyclosis

The rate of comparison of transpiration from both surfaces of a dorsiventral leaf is measured using

1. Ganong's potometer
2. Darwin's potometer
3. Garreau's potometer
4. Farmer's potometer