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Agriculture - 10 (B.Sc. Agriculture)

Description: Agriculture - 10
Number of Questions: 15
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Tags: Agriculture - 10 Photoperiodism Binomial Nomenclature Science Kingdom Plantae Crop Improvement Photosynthesis Fruit Flower
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Which of the following is a carnivorous plant?

  1. Orobanche

  2. Striga

  3. Cuscuta

  4. Dionaea


Correct Option: D
Explanation:

Dionaea is a carnivorous plant.

_________ is not true about a mustard plant.

  1. Bicarpellary

  2. Gamosepalous

  3. Hypogynous flowers

  4. Racemose inflorescence

  5. Actinomorphic flower


Correct Option: B
Explanation:

The sepals of a mustard flower are free from each other. Hence, they are called polysepalous.

What is the number of chromosomes present in humans?

  1. 46

  2. 40

  3. 24

  4. 23


Correct Option: A
Explanation:

Before Tjio, who discovered that the human cell has 46 chromosomes, scientists thought that the human chromosome number is 48.

Which of the following statements is correct regarding C3 plants?

  1. Bundle sheath cells are granal and mesophyll cells are agranal.

  2. Bundle sheath cells are agranal and mesophyll cells are granal.

  3. Both bundle sheath cells and mesophyll cells are agranal.

  4. Both bundle sheath cells and mesophyll cells are granal.


Correct Option: B
Explanation:

This is the true characteristic of C4 plants.

Why does sunflower turn towards sunlight?

  1. To save itself from enemies

  2. To make food

  3. To appear attractive

  4. To receive vitamin D

  5. To save its green leaves from sun rays


Correct Option: B
Explanation:

Sunflower turns towards sunlight to make food.

The botanical name of ‘Pigeon pea’ is

  1. Achras zapota

  2. Cajanus cajan

  3. Punica granetum

  4. Pisum sativum


Correct Option: B
Explanation:

Cajanus cajan is botanical name of ‘Pigeon pea’.

Which of the following is a polyhedral virus?

  1. Polio virus

  2. TMV

  3. Vaccinia virus

  4. Bactreriophages


Correct Option: A

Which of the following tools/machines can do both harvesting and threshing?

  1. Sickle

  2. Hoe

  3. Combine

  4. Seed drill

  5. Sprayer


Correct Option: C
Explanation:

Combine can do both harvesting and threshing.

Soyabean is one of the richest sources of

  1. proteins

  2. vitamins

  3. minerals

  4. carbohydrates


Correct Option: A

Gluconic acid is obtained from

  1. Saccharomyces

  2. Rhizopus

  3. Aspergillus

  4. Lycoperdon


Correct Option: C

The width of the flower bud is ________ as compared to the flower.

  1. large

  2. very large

  3. small

  4. equal


Correct Option: C
Explanation:

The width of the flower bud is smaller than the flower as the bud is a closed flower. 

Which of the following soils is very hard to cultivate?

  1. Alluvial

  2. Black

  3. Red

  4. Sandy


Correct Option: C

Cotton is grown extensively in

  1. alluvial soil

  2. black soil

  3. red soil

  4. gravel


Correct Option: B

C4 plants differ from C3 plant with respect to the

  1. number of ATP molecules consumed

  2. leaves have Krans anatomy

  3. substrate which accepts carbon dioxide

  4. All of the above


Correct Option: B
Explanation:

The C4 plants often possess a characteristic leaf anatomy called Kranz anatomy. The primary function of Kranz anatomy is to provide a site in which CO2 can be concentrated around RuBisCO, thereby avoiding photorespiration.

________ is the fruit that develops from a superior ovary in which the pericarp and the seed coat remain free from each other.

  1. Achene

  2. Cypsela

  3. Nut

  4. Samara


Correct Option: A
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