Identify the events $(A, B, D$ and $E)$ in life of general reproduction
$A-$ Gamete transfer, $B-$ Gametogeneis, $D-$ Zygote formation, $E-$ Embryogenesis
$A-$ Gametogeneis, $B-$ Gamete transfer, $D-$ Zygote formation, $E-$ Embryogenesis
$A-$ Gametogeneis, $B-$ Zygote formation, $D-$ Gamete transfer, $E-$ Embryogenesis
$A-$ Gametogeneis, $B-$ Gamete transfer, $D-$ Embryogenesis, $E-$ Zygote formation.
Some organisms like $...A.., ...B..., ...C...$ and $...D...$ the female gamete undergoes development to form new organisms without fertilisation
$A - B - C - D$
Development of embryo from the cells of the nucellus is called
Which of the following statements are correct regarding female reproductive cycle?
$A$. In non-primate mammals cyclical changes during reproduction are called oestrus cycle.
$B$. First menstrual cycle begins at puberty and is called menopause.
$C$. Lack of menstruation may be indicative of pregnancy.
$D$. Cyclic menstruation extends between menarche and menopause.
Choose the most appropriate answer from the options given below.
Identify $X$ and $Y$ in given figure
What is seen in zygote during embryogenesis ?