• Biology - Section 1
16. 

Most highly intelligent mammals are

A. whales
B. dolphins
C. elephants
D. kangaroos

17. 

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

18. 

Prokaryotic cells lack

A. nucleolus
B. nuclear membrane
C. membrane bound by organelles
D. All of these

19. 

Photosynthesis takes place faster in

A. yellow light
B. white light
C. red light
D. darkness

20. 

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