100 Best Biology MCQ
Q17). Plant development is influenced by
a).quality of light only
b).quality and quantity of light
c).quality and duration of light
d).quality, quantity and duration of light
Correct Answer:
quality, quantity and duration of light
Explaination:
Q18). Prokaryotic cells lack
a).nucleolus
b).nuclear membrane
c).membrane bound by organelles
d).All of these
Correct Answer:
All of these
Explaination:
Q19). Photosynthesis takes place faster in
a).yellow light
b).white light
c).red light
d).darkness
Correct Answer:
white light
Explaination:
Q20). Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by
a).Robert Hooke
b).Robert Brown
c).Rudolf Virchow
d).Theodore Schwann
Correct Answer:
Robert Brown
Explaination:
Q21). Primary phloem develops from
a).lateral meristem
b).protoderm
c).extrastelar cambium
d).provascular tissue
Correct Answer:
provascular tissue
Explaination:
Q22). Other than spreading malaria, anopheles mosquitoes are also vectors of
a).dengue fever
b).filariasis
c).encephalitis
d).yellow fever
Correct Answer:
filariasis
Explaination:
Q23). Plants that grow in saline water are called
a).halophytes
b).hydrophytes
c).mesophytes
d).thallophytes
Correct Answer:
halophytes
Explaination:
Q24). Pyorrhoea is a disease of the
a).nose
b).gums
c).heart
d).lungs
Correct Answer:
gums
Explaination: