Select the incorrect pair :
Maize - $20$ chromosome in meiocyte
Potato - $24$ chromosome in gamete
Onion - $8$ chromosome in gamete
Apple – $39$ Chromosome in meiocyte
$(a)$ In both plants and animal, have three phases during their life cycle.
$(b)$ In plant and animal, hormones are responsible for the transitions between the three phase.
Which organism do not have heterogametes?
...... is the vital link that ensures continuity of species between organisms of one generation and the next generation
Identify $X$ and $Y$ from the given diagram
Development of embryo from the cells of the nucellus is called