CSES Exam 1 Questions with Detailed Verified Answers

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CSES Exam 1 Questions with Detailed
Verified Answers
Question: The best explanation for man's sudden shift from hunting and
gathering to an agriculture-based society is
Answer: the shift from ice-ages to a climate more favorable to agriculture


Question:
The earth's human population
Answer: is currently over 7 billion


Question:
Crop plants thought to have originated in Africa include
Answer: watermelon, okra, sorghum


Question:
The most important crop families, in terms of food production, are
Answer: Poaceae, Fabaceae, and Solanaceae


Question:
All stems are identified as such based on the presence of
Answer: nodes


Question:
Light frequencies that are best absorbed by chlorophyll and other plant
pigments are

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Answer: blues and reds


Question:
The main function of leaves is
Answer: Light (energy) gathering and food (sugar) production


Question:
Of the carbon found on earth, the largest amount is in the form of
Answer: Fossil fuels and mineral carbonates (limestone)


Question:
The desired LAI (leaf area index) range for most crops is
Answer: 2.6 to 4.0


Question:
In its most basic form, photosynthesis can be divided into
Answer: light and dark reactions


Question:
Compared to C3 plants, C4 plants are
Answer: more likely to be tropical or tropical in origin


Question:
Photosynthesis converts light energy into chemical energy (sugars) while
respiration
Answer: is defined as the loss of water through leaf stomata