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BPSC 21 Cali Cornucopia Exam Questions and Answers (120 Questions) – Plant Biology, GMOs, Climate Change & Crop Science

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This document contains 120 exam questions and verified answers for BPSC 21 Cali Cornucopia, covering core concepts in plant biology, agricultural production, crop domestication, genetics, biotechnology, and environmental sustainability. It integrates lecture material with applied examples from California agriculture, including citrus biology, avocado reproduction, plant family characteristics (Rutaceae, Fabaceae, Poaceae, Solanaceae), carbon and nitrogen cycles, greenhouse gases, climate change, and global food systems. The content is closely linked to the course textbooks Full Planet, Empty Plates, The Drunken Botanist, and Sahelian Drought, incorporating their major themes such as food security under resource depletion, plant domestication and global crop exchange, Sahelian breeding challenges, and the botanical origins of major food and beverage crops. The document also provides in-depth coverage of GMO technology, marker-assisted breeding, transgene flow, biosafety research, herbicide tolerance, insect resistance, and contemporary debates surrounding agricultural biotechnology. Foundational biological principles are thoroughly reviewed, including the central dogma (DNA–RNA–protein), mutation types, karyotypes, polyploidy, alternation of generations, inheritance patterns, domestication syndrome, evolution by natural selection and gene flow, and quantitative traits. Applied case studies such as nixtamalization and niacin availability, pellagra, Columbian Exchange, permafrost methane release, and carbon footprint comparisons further connect biological theory to real-world agricultural and environmental issues. This resource is particularly suitable for: Students enrolled in BPSC 21 or introductory plant biology courses Agriculture, crop science, and environmental science majors Food systems and sustainability students Biology and life science undergraduates reviewing genetics and evolution Students preparing for midterm or final examinations in plant and agricultural sciences It serves as a structured, exam-focused revision guide that consolidates lectures and textbook material into a comprehensive and organized study tool. Keywords: plant biology, California agriculture, citrus progenitors, avocado reproduction, climacteric fruits, carbon footprint, greenhouse effect, global warming, climate change, nitrogen cycle, domestication syndrome, biological evolution, polyploidy, alternation of generations, central dogma, DNA structure, marker assisted breeding, transgenic crops, GMO biosafety, gene flow, HLB disease, Columbian exchange, nixtamalization, pellagra, plant families, Rutaceae, Fabaceae, Poaceae, Solanaceae

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BPSC 21 Cali Cornucopia 2026
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Answers | Already Graded A+



California is the #1 state in - 🧠 ANSWER ✔✔Annual Value of its total

agriculture production and Avocado production

Which are the 4 major progenitors of most of the other commercial Citrus

species that we eat? - 🧠 ANSWER ✔✔Small-flowered papeda, Citron,

Pummelo, Mandarin

,Climacteric Fruits(such as banana & avocado) should be harvested when?

- 🧠 ANSWER ✔✔Mature so they will ripen properly


Pound-for-poundd, which has the highest fraction of nitrogen atoms? - 🧠

ANSWER ✔✔AIR


One of the top ten California Crops(in value) - 🧠 ANSWER ✔✔Almonds!


What is full planet about - 🧠 ANSWER ✔✔1. details of global trends that are

destabilizing long-term food security.

2.policy recommendations for stabilizing population, decreasing excessive

meat consumption, eradicating poverty, and reversing biofuel policies that

currently divert land, food and water that could be used to feed people.

according to the syllabus what is the most important document you'll

receive in this course? - 🧠 ANSWER ✔✔The syllabus


Differences between plant cells and animal cells - 🧠 ANSWER ✔✔plant

cells contain chloroplasts; animals cells do not.

plant cells have cell walls; animals cells do not.

"greenhouse effects," and "global warming," and "climate change" - 🧠

ANSWER ✔✔"Greenhouse effect" refers to the effect of the certain gases

, that in Earth's atmosphere that are relatively opaque to infra-read (heat)

rays that result in Earth's relatively uniform temperature over the entire day.

Recent "Global warming" due to an increase in greenhouse gases from

multiple sources(including burning fossil fuels) describes a steady overall

increase in the Earth's mean temp starting in the 1800's. Recent "Climate

change" is a variety of local climate changes- including local cooling and

bad winter storms as well as increasing powerful hurricanes, heat waves,

floods and droughts- due to "global warming"

In general we would expect different species of the same plant family to

have - 🧠 ANSWER ✔✔the same number of petals in individual flowers


"flavor"- book we read - 🧠 ANSWER ✔✔The giant flavor company

Givaudan gets some of its inspiration for its citrus-based flavors from visits

to UC Riverside

"Full planet, Empty Plates" discusses the problem of Humanity "moving up

the food chain" that phrase refers to - 🧠 ANSWER ✔✔The per-prson

consumption of meat(which requires more resources per pound than plant-

based food) has been steadily increasing in recent decades.


Macronutrients include - 🧠 ANSWER ✔✔Carbohydrates, fats, and proteins



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