Fill in the blanks. 4×1= 4 1. Sperms are produced in the male reproductive organ named______.
2. The secretion of endocrine glands is called ___________.
3. Shrillness of sound is determined by the ________ of vibration.
4. The number of nuclei present in a zygote is ________.
State True / False. 4×1/2 = 2
1. An embryo is made up of a single cell.
2. Children gain height during adolescence.
3. The number of oscillations per second of a vibrating object is called
its time period.
4. Zygote is formed as result of fertilization of gametes.
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