The origin of seeds occurred approximately ________ years ago.

A) 65 million
B) 360 million
C) 140 billion
D) 3.5 billion


B) 360 million

Biology & Microbiology

You might also like to view...

Leukopenia is the ________ in the level of white blood cells in a patient.

A. decrease B. abnormal production C. stabilization D. elevation

Biology & Microbiology

Which of the following brain structures would cause central diabetes insipidus if it were damaged?

A) cerebrum B) pons C) cerebellum D) hypothalamus

Biology & Microbiology

Cyanobacteria modulate the relative amounts of their different photopigments in response to the wavelength of incident light by a process known as ________.

A. adaptive photopigmentation B. wavelength adaptation C. chromatic adaptation D. light shifting

Biology & Microbiology

Which plant cells are the most common and the least specialized?

A. parenchyma B. collenchyma C. meristem D. epidermis E. sclerenchyma

Biology & Microbiology