Wheat Cultivation Quiz | Agriculture RS Rajput

Agronomy Mastery Quiz

Topic: Wheat Cultivation (Rabi Crop) | 20 High-Yield MCQs

Question 1

What is the botanical name of the most commonly cultivated "Bread Wheat"?

A) Triticum durum

B) Triticum dicoccum

C) Triticum aestivum

D) Triticum sphaerococcum

Tap to Reveal Answer

Correct Answer: C) Triticum aestivum Mexican dwarf wheat or common bread wheat is scientifically known as Triticum aestivum (Hexaploid).

Question 2

Which stage is considered the most critical for irrigation in wheat?

A) Tillering Stage

B) CRI (Crown Root Initiation)

C) Flowering Stage

D) Dough Stage

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Correct Answer: B) CRI (Crown Root Initiation) CRI occurs 21 days after sowing. Water stress at this stage results in drastic yield reduction.

Question 3

What is the unique protein found in wheat that provides elasticity to dough?

A) Zein

B) Oryzenin

C) Gluten

D) Albumin

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Correct Answer: C) Gluten Gluten is essential for the baking quality of wheat flour, allowing dough to rise.

Question 4

The "Norin-10" gene is responsible for which trait in wheat?

A) Rust resistance

B) High protein content

C) Dwarfing

D) Drought tolerance

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Correct Answer: C) Dwarfing Norin-10 was the source of dwarfing genes (Rht1 and Rht2) used in the Green Revolution varieties.

Question 5

What is the standard seed rate for timely sown irrigated wheat?

A) 50-60 kg/ha

B) 75-80 kg/ha

C) 100 kg/ha

D) 150 kg/ha

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Correct Answer: C) 100 kg/ha For normal sowing, 100 kg/ha is recommended. For late sowing, it is increased to 125 kg/ha.

Question 6

Phalaris minor (Gulli danda) is a major weed mimic in wheat fields. Which herbicide is used to control it?

A) 2,4-D

B) Isoproturon / Sulfosulfuron

C) Atrazine

D) Butachlor

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Correct Answer: B) Isoproturon / Sulfosulfuron Since Phalaris minor developed resistance to Isoproturon, Sulfosulfuron is now commonly used.

Question 7

What is the center of origin of Wheat?

A) South America

B) South West Asia (Turkey)

C) China

D) Africa

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Correct Answer: B) South West Asia (Turkey) The Vavilovian center of origin for wheat is South West Asia.

Question 8

The inflorescence (flower head) of wheat is technically called a:

A) Panicle

B) Ear or Spike

C) Raceme

D) Umbel

Tap to Reveal Answer

Correct Answer: B) Ear or Spike The wheat inflorescence is a spike consisting of spikelets attached to a central rachis.

Question 9

Which species of wheat is known as "Macaroni Wheat"?

A) T. aestivum

B) T. durum

C) T. dicoccum

D) T. monococcum

Tap to Reveal Answer

Correct Answer: B) T. durum Durum wheat is hard and rich in gluten, making it ideal for pasta, macaroni, and vermicelli.

Question 10

What is the recommended row-to-row spacing for wheat?

A) 15 cm

B) 22.5 cm

C) 30 cm

D) 45 cm

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Correct Answer: B) 22.5 cm The standard spacing is 22.5 cm between rows for optimum population.

Question 11

"Karnal Bunt" is a serious disease of wheat caused by:

A) Bacteria

B) Virus

C) Fungus (Neovossia indica)

D) Nematode

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Correct Answer: C) Fungus (Neovossia indica) It is often called the "Cancer of Wheat" due to its impact on grain quality and export restrictions.

Question 12

Which of the following is the first man-made cereal?

A) Oats

B) Triticale

C) Rye

D) Barley

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Correct Answer: B) Triticale Triticale is a cross between Wheat (Triticum) and Rye (Secale).

Question 13

What is the optimum temperature range for the germination of wheat seeds?

A) 5-10°C

B) 20-25°C

C) 30-35°C

D) >35°C

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Correct Answer: B) 20-25°C Wheat requires cool temperatures for germination (optimally 20-25°C).

Question 14

The fruit type of wheat is called a:

A) Pod

B) Caryopsis

C) Siliqua

D) Drupe

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Correct Answer: B) Caryopsis Like other cereals, the wheat grain is a caryopsis where the seed coat is fused with the fruit wall.

Question 15

Which bio-fertilizer is recommended for seed treatment in wheat to fix nitrogen?

A) Rhizobium

B) Azotobacter

C) Azolla

D) Frankia

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Correct Answer: B) Azotobacter Azotobacter is a non-symbiotic nitrogen fixer commonly used for wheat and other cereals.

Question 16

What is the "Test Weight" (weight of 1000 grains) of average bread wheat?

A) 20 g

B) 40 g

C) 60 g

D) 2 g

Tap to Reveal Answer

Correct Answer: B) 40 g The test weight of T. aestivum is approximately 40g (Phalaris minor seeds are much lighter, ~2g).

Question 17

Which chemical is used to control broad-leaved weeds in wheat?

A) 2,4-D

B) Fluchloralin

C) Glyphosate

D) Atrazine

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Correct Answer: A) 2,4-D 2,4-D is a selective systemic herbicide effective against broad-leaved weeds.

Question 18

Puccinia graminis tritici is the causal organism for which rust?

A) Yellow Rust

B) Brown Rust

C) Black or Stem Rust

D) White Rust

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Correct Answer: C) Black or Stem Rust Black rust is the most destructive but usually appears later in the season in India.

Question 19

The sowing depth of wheat depends primarily on the length of the:

A) Radicle

B) Coleoptile

C) Plumule

D) Root hair

Tap to Reveal Answer

Correct Answer: B) Coleoptile Sowing too deep (beyond coleoptile length, approx 5cm) results in poor emergence, especially in dwarf varieties.

Question 20

Wheat is a _____ crop.

A) Self-pollinated

B) Cross-pollinated

C) Often cross-pollinated

D) Vegetatively propagated

Tap to Reveal Answer

Correct Answer: A) Self-pollinated Wheat is a highly self-pollinated crop (cleistogamy is common).