BPSC EXAM 2 LEC9 QUESTIONS AND
ANSWERS. VERIFIED 2026.
Mystery Question #1: Why do plants store starch (a complex carbohydrate), oils (fats) and
proteins in their seeds? All macromolecules are used:
a. as a food source by the seeding after it emerges from the soil
b. as a food source by the seeding prior to its emergence from the soil
c. in the process of photosynthesis
d. only the stored starch is important to the growing seeding. Starch is fermented to produce
biodiesel. - ANS b. as a food source by the seeding prior to its emergence from the soil
Mystery question #2: Which of the following statements is true?
a. sucrose (a solid) is broken down into glucose (50%) and fructose (50%)
b. high fructose corn syrup (a liquid) is made to contain more fructose (55%) than glucose
(45%).
c. nutritionists recommend consuming foods with high levels of sucrose rather than high
fructose corn syrup.
d. too much fructose causes fatty liver disease. - ANS a. sucrose (a solid) is broken down into
glucose (50%) and fructose (50%)
b. high fructose corn syrup (a liquid) is made to contain more fructose (55%) than glucose
(45%).
d. too much fructose causes fatty liver disease.
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
, Mystery Question #3: Which of the following statements is FALSE? A maize seed:
a. is called a caryopsis. Its seedcoat is fused to the seed
b. has a large endosperm that stores starch (a carbohydrate).
c. has 2 cotyledons that store proteins and oils.
d. has an embryo that will develop into the seeding. - ANS c. has 2 cotyledons that store
proteins and oils.
Plant family #5: Poaceae - ANS (= Gramineae)
"Grass family"
Characters of the Plant Family Poaceae - ANS ▪ Leaves simple and alternate with no stipules
▪ Flowers tiny, bisexual or unisexual, wind pollinated
▪ Typical floral formula
▪ K2 C0 A3 G2 No petals!
▪ Flower is protected with 2 modified leaves called
"bracts"
▪ Fruit: Caryopsis - a dry, indehiscent, one-seeded fruit
(aka grain)
Important food species in Poaceae: - ANS 2 Triticum species - wheat
Oryza sativa - rice
Zea mays - corn (maize)
Hordeum vulgare - barley
Sorghum bicolor - sorghum (milo)
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
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ANSWERS. VERIFIED 2026.
Mystery Question #1: Why do plants store starch (a complex carbohydrate), oils (fats) and
proteins in their seeds? All macromolecules are used:
a. as a food source by the seeding after it emerges from the soil
b. as a food source by the seeding prior to its emergence from the soil
c. in the process of photosynthesis
d. only the stored starch is important to the growing seeding. Starch is fermented to produce
biodiesel. - ANS b. as a food source by the seeding prior to its emergence from the soil
Mystery question #2: Which of the following statements is true?
a. sucrose (a solid) is broken down into glucose (50%) and fructose (50%)
b. high fructose corn syrup (a liquid) is made to contain more fructose (55%) than glucose
(45%).
c. nutritionists recommend consuming foods with high levels of sucrose rather than high
fructose corn syrup.
d. too much fructose causes fatty liver disease. - ANS a. sucrose (a solid) is broken down into
glucose (50%) and fructose (50%)
b. high fructose corn syrup (a liquid) is made to contain more fructose (55%) than glucose
(45%).
d. too much fructose causes fatty liver disease.
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
1
, Mystery Question #3: Which of the following statements is FALSE? A maize seed:
a. is called a caryopsis. Its seedcoat is fused to the seed
b. has a large endosperm that stores starch (a carbohydrate).
c. has 2 cotyledons that store proteins and oils.
d. has an embryo that will develop into the seeding. - ANS c. has 2 cotyledons that store
proteins and oils.
Plant family #5: Poaceae - ANS (= Gramineae)
"Grass family"
Characters of the Plant Family Poaceae - ANS ▪ Leaves simple and alternate with no stipules
▪ Flowers tiny, bisexual or unisexual, wind pollinated
▪ Typical floral formula
▪ K2 C0 A3 G2 No petals!
▪ Flower is protected with 2 modified leaves called
"bracts"
▪ Fruit: Caryopsis - a dry, indehiscent, one-seeded fruit
(aka grain)
Important food species in Poaceae: - ANS 2 Triticum species - wheat
Oryza sativa - rice
Zea mays - corn (maize)
Hordeum vulgare - barley
Sorghum bicolor - sorghum (milo)
@COPYRIGHT 2026/2027 ALL RIGHTS RESERVED
2
