MCQ
At the time of puberty in boys which hormone triggers changes
- AAdrenaline
- BInsulin
- ✓Testosterone
- DThyroxin
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$a -$ Nuclear envelope assembles around chromosomes clusters.
$b -$ Spindle fibers attach to kinetochores of chromosomes.
$c-$ Condensation of chromosomes.
$d -$ Centromeres split and chromatids separate.
$(a)$ Contraction of diaphragm
$(b)$ Contraction of external inter-costal muscles
$(c)$ Pulmonary volume decreases
$(d)$ Intra pulmonary pressure increases

$(i)$ mesosome is a extension of plasma membrane
$(ii)$ These extensions are only in the form of Spherical
$(iii)$ Mesosomes help in cell wall formation and $RNA$ synthesis
$(iv)$ They help in respiration