Maize Cultivation Quiz | Agriculture RS Rajput

Agronomy Mastery Quiz

Topic: Maize (Corn) Cultivation | 20 High-Yield MCQs

Question 1

Which crop is famously known as the "Queen of Cereals"?

A) Wheat

B) Rice

C) Maize

D) Barley

Tap to Reveal Answer

Correct Answer: C) Maize Maize is called the Queen of Cereals because of its high genetic yield potential compared to other cereals.

Question 2

What is the botanical name for "Sweet Corn"?

A) Zea mays indurata

B) Zea mays everta

C) Zea mays saccharata

D) Zea mays amylacea

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Correct Answer: C) Zea mays saccharata Sweet corn is harvested at the milky stage and has a higher sugar content than field corn.

Question 3

Which of the following is the most critical stage for irrigation in maize?

A) Knee-high stage

B) Tasseling and Silking

C) Dough stage

D) Maturity

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Correct Answer: B) Tasseling and Silking Water stress during tasseling (male flowering) and silking (female flowering) causes the highest yield reduction.

Question 4

Which herbicide is most commonly used as a pre-emergence spray in maize?

A) 2,4-D

B) Atrazine

C) Isoproturon

D) Glyphosate

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Correct Answer: B) Atrazine Atrazine (or Simazine) is widely used for controlling broad-leaved weeds in maize.

Question 5

What is the protein found in maize grain called?

A) Gluten

B) Oryzenin

C) Zein

D) Hordein

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Correct Answer: C) Zein Maize protein is called Zein, but it is deficient in essential amino acids like Lysine and Tryptophan.

Question 6

"White Bud" in maize is caused by the deficiency of which nutrient?

A) Nitrogen

B) Phosphorus

C) Zinc

D) Iron

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Correct Answer: C) Zinc Zinc deficiency causes white necrotic patches or "White Bud" symptoms in young maize leaves.

Question 7

What is the origin of Maize?

A) India

B) China

C) Mexico / Central America

D) Africa

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Correct Answer: C) Mexico / Central America Central America (specifically Mexico) is considered the center of origin for Maize.

Question 8

Maize is classified as a _____ plant.

A) Monoecious

B) Dioecious

C) Gynodioecious

D) Androdioecious

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Correct Answer: A) Monoecious Maize has separate male (tassel) and female (silk/ear) flowers on the same plant.

Question 9

What is the recommended seed rate for composite maize varieties?

A) 40-50 kg/ha

B) 15-20 kg/ha

C) 8-10 kg/ha

D) 100 kg/ha

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Correct Answer: B) 15-20 kg/ha The general seed rate is around 20 kg/ha. For fodder maize, it is higher (40-50 kg/ha).

Question 10

Which roots in maize provide mechanical support to the plant?

A) Seminal roots

B) Crown roots

C) Prop or Brace roots

D) Tap roots

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Correct Answer: C) Prop or Brace roots These are aerial roots arising from lower nodes to prevent lodging and provide support.

Question 11

The male inflorescence of maize is known as:

A) Cob

B) Silk

C) Tassel

D) Arrow

Tap to Reveal Answer

Correct Answer: C) Tassel The tassel is the male flower cluster found at the top of the plant.

Question 12

Which variety of maize is used for making popcorn?

A) Flint Corn

B) Dent Corn

C) Pop Corn (Z. mays everta)

D) Waxy Corn

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Correct Answer: C) Pop Corn (Z. mays everta) Popcorn has a hard endosperm that explodes when heated due to steam pressure.

Question 13

What is the standard spacing recommended for Maize?

A) 30 x 10 cm

B) 45 x 15 cm

C) 60 x 20 cm

D) 90 x 30 cm

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Correct Answer: C) 60 x 20 cm 60 cm row spacing and 20-25 cm plant spacing is standard to maintain optimal population.

Question 14

"Double Cross" technique in maize breeding was proposed by:

A) Shull

B) D.F. Jones

C) M.S. Swaminathan

D) Norman Borlaug

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Correct Answer: B) D.F. Jones D.F. Jones proposed the double cross technique (1917) for commercial hybrid seed production.

Question 15

Which nutrient deficiency causes purplish discoloration of leaves in maize?

A) Nitrogen

B) Phosphorus

C) Potassium

D) Sulphur

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Correct Answer: B) Phosphorus Phosphorus deficiency typically manifests as purple coloration on the older leaves.

Question 16

Maize is highly sensitive to:

A) Water Stagnation

B) Drought

C) High Sunlight

D) Wind

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Correct Answer: A) Water Stagnation Maize cannot tolerate waterlogging for more than 24 hours; drainage is crucial.

Question 17

Generally, at what moisture percentage is maize harvested?

A) 10-12%

B) 15-20%

C) 20-25%

D) 30-35%

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Correct Answer: C) 20-25% Maize is harvested when grain moisture is around 20-25%, then dried to 10-12% for storage.

Question 18

Which type of maize is primarily grown in the USA (Corn Belt)?

A) Flint Corn

B) Dent Corn

C) Sweet Corn

D) Pop Corn

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Correct Answer: B) Dent Corn Dent corn (Zea mays indentata) accounts for the vast majority of US production.

Question 19

Baby Corn should be harvested at which stage?

A) Before fertilization (Silking)

B) Milky stage

C) Dough stage

D) Mature stage

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Correct Answer: A) Before fertilization (Silking) Baby corn is harvested within 2-3 days of silk emergence, before fertilization occurs.

Question 20

What is the approximate oil content in Maize grain?

A) 1-2%

B) 4-5%

C) 10-12%

D) 20%

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Correct Answer: B) 4-5% Maize germs are a significant source of oil, containing about 4-5% oil.