MCQ
Embryo sac is called monosporic when it develops from:
- AOne of the megaspores out of the four megaspores which are derived from division of megaspore mother cell.
- BThree megaspores.
- COnly from two functional megaspores.
- DNone of these.
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$II.$ Allen's rule is explain mammals living in colder climates
$III.$ Altitude sickness is caused because of body not getting enough oxygen due to low atmospheric pressure at high altitude
$IV.$ Desert lizards lack behavioural means to manage to their body temperature
Choose the correct option for above adaptations
Choose the correct option for $A , B$ and $C$