MCQ
Ribosomes are made up of
- A$DNA$ and protein
- BDNA alone
- ✓RNA and protein
- DRNA and DNA
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$I.$ devoid of nucleus
$II.$ formed in bone marrow
$III.$ possess healing properties
$IV.$ biconcave in shape
$V.$ help in blood clotting
Choose the option with correct properties
$(i)$ All living organisms have ability to respond the environment stimuli which could be physical, chemical or biological.
$(ii)$ Plants respond to external factors like light, water, temperature, other organisms, pollutants, etc.
$(iii)$ Photoperiod affects the process of reproduction.
$(iv)$ Human being is the only organism who has self consciousness.