1. Ovulation occurs at which phase of oogenesis?
oogonia
primary oocyte
secondary oocyte
none of them
2. Which one is not a neurotransmitter of central nervous system?
glutamate
GABA
glycine
nor-adrenaline
3. Which one is exceptional?
H3BO3 \mathrm{H}_{3} \mathrm{BO}_{3} H3BO3
H3PO2 \mathrm{H}_{3} \mathrm{PO}_{2} H3PO2
H3PO3 \mathrm{H}_{3} \mathrm{PO}_{3} H3PO3
HNO3 \mathrm{HNO}_{3} HNO3
4. Example of secondary meristematic tissue-
meristem
cork cambium
phellogen
cortex
5. What kind of bright dye carminic acid extracted from insects is?
red
yellow
blue