What is the function of cotyledons in many plants?

a. to enclose and protect the seed
b. to act as a short embryonic root
c. to produce pollen
d. to store food reserves
e. to aid in seed dispersal


D

Biology & Microbiology

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The rate at which producers convert solar energy into chemical energy is an ecosystem’s ____

a. standing crop biomass b. biogeochemical cycle c. net primary productivity d. efficiency e. gross primary productivity

Biology & Microbiology

As early organisms evolved the ability to harness energy from the sun, other organisms began to die out because they were ____

a. destroyed by a meteorite b. outcompeted by multi-celled organisms c. consumed by dinosaurs d. poisoned by oxygen gas e. starved

Biology & Microbiology

photosynthesis requires ___________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Mycetismus is caused by

A. ingestion of food contaminated with fungus. B. ingestion of toxic mushrooms. C. ingestion of milk from a cow that has ingested feed contaminated with fungal toxins. D. inhalation of fungal allergens. E. contamination of a wound with pathogenic fungi present in the skin.

Biology & Microbiology