Double Fertilization Means That ________

question 15

Multiple Choice

Double fertilization means that ________.

• A) flowers must be pollinated twice to yield fruits and seeds
• B) every egg must receive two sperm to produce an embryo
• C) one sperm is needed to fertilize the egg, and a second sperm is needed to fertilize the polar nuclei
• D) every sperm has two nuclei

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Definitions:

Mood Disorders

A category of mental health disorders characterized by significant disturbances in an individual’s mood, such as depression or bipolar disorder.

Bipolar Disorders

Psychiatric conditions characterized by significant shifts in mood, energy, and activity levels, ranging from manic highs to depressive lows.

Depressive Disorders

A group of conditions characterized by persistent feelings of sadness and worthlessness and a lack of desire to engage in previously enjoyable activities.

Depressive Disorder

A category of mood disorders characterized by persistent feelings of sadness, hopelessness, and a lack of interest or pleasure in activities.