Most highly intelligent mammals are

Most highly intelligent mammals are

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

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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

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18.

Prokaryotic cells lack

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

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