Hydra reproduces through ________.
Binary fission
Fragmentation
Budding
None of these
When the fusion of sperm and egg takes place outside the body is ________ .
Internal fertilisation
External fertilisation
Menstruation
Testes secrete male sex hormone called __________.
Progesterone
Oestrogen
Testosterone
The stage of attaining sexual maturity is _________.
Puberty
Gestation period
Adolescence
The replacement of the outer skin of caterpillar is called __________.
Imago
Metamorphosis
Moulting
The flow of blood in females in every cycle is ________.
Menstrual cycle
Gestation
The time during which foetus develops in the womb is _________.
Gestational period
Menstrual period
Adolescence period
After fertilisation ___________ is formed.
Zygote
Sperm
Ovum
Shedding and replacement of exoskeleton is _________.
The process of fertilisation takes place in the _________.
Ovary
Oviduct
Uterus
