Which of These Substances Is /Are  Not Important in the Life

question 48

Multiple Choice

Which of these substances is /are  not important in the life cycle of plants?
I. N₂
II. He
III. H₂O
IV. CO₂

• A) I only
• B) II only
• C) II and III
• D) I and II
• E) I, III, and IV

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Definitions:

Oval Window

A membrane-covered opening at the base of the stapes bone in the middle ear that transfers sound vibrations to the cochlea.

Basilar Membrane

A membrane in the cochlea of the inner ear that vibrates in response to sound and whose vibrations lead to activity in the auditory pathways of the brain.

Middle Ear

The part of the ear between the eardrum and the oval window that contains three small bones which transmit sound vibrations.

Dichromat

An individual with dichromacy, a form of color blindness where one has difficulty distinguishing certain colors due to the absence or malfunction of one of the three types of cone cells in the eyes.