agriculture MCQs – Page 31

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

1501. Single celled plants are called__________________?
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A. Prokaryotes

B. Protozoa

C. Protophyta

D. B. Protest

1502. What is 2,4-D____________________?
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A. 2-4 diclorophenoxy acetic acid

B. 2-4 napthalene acetic acid

C. IAA

D. All the above

1503. How many crop of potato are sown annually_________________?
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A. 2

B. 3

C. 4

D. 1

1504. The conservation of glucose or fructose in pyruive acid during respiration is called________________?
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A. Glycolysis

B. Glycogen

C. None of the above

D. Glucopage

1505. Plants which shed their leaves during winter are ___________________?
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A. Processing

B. Vegetable forcing

C. Grading

D. Packing

1506. All the individuals derived by vegetative propagation from a single individual is known as___________________?
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A. Affects more than one character

B. Affects more than five characters

C. Affects more than ten characters

D. Affects only one character

1507. A series of electron transport coupling factors which transfer along an electro chemical ingredients, yielding ATP, in light is called_________________?
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A. Photoperiodism

B. Photosynthesis

C. None of the above

D. Photophosphorrylation
1508. The first organisms to appear on the earth were more like plants than animals because__________________?
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A. There are more plants than animals

B. Plants can manufacture their own food material

C. Plants are similar in structure

D. None of the above

1509. Cosmos, chrysanthemum, poinsettia are the examples of _________________?
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A. Long night plants

B. Short night plants

C. Long day plants

D. Short day plants
1510. Which type of development takes place in the female part of the ovule______________________?
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A. Tapetium

B. Microsporogenesis

C. Megasporogenesis

D. Gametogenesis

1511. Citrus root stock species are propagated through_________________?
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A. Seeds

B. Cutting

C. None of the above

D. Buds

1512. The management of plant structure and fruiting wood is called____________________?
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A. Pruning

B. None of the above

C. Thinning

D. Training

1513. Which method of irrigation is possible under the economical conditions of Pakistan __________________?
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A. Drip irrigation

B. Canal system

C. Modified basin system

D. All the above
1514. Whisky is distilled from__________________?
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A. Legume fruits

B. Fermented mash of malted or unmalted cereals and potatoes

C. Raw grains

D. Fermented juices of fruits

1515. Which one of the following is fruit____________________?
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A. Brinjal

B. Potato

C. Ginger

D. Cauliflower

1516. Selenium unigram is used as__________________?
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A. Cardio vascular stimulant

B. In lowering blood pressure

C. In breaking down of cholesterol

D. All the above
1517. In populations genotypic and phenotypic ratios are identical in cases of___________________?
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A. None of the above

B. Mendel lan monohybrid

C. Mendelian dihybrid

D. Incomplete dominance
1518. In spinach cross pollination takes place by___________________?
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A. Hybridization

B. Water

C. Birds

D. Wind
1519. Highly specialized plants which reproduced by seeds are called__________________?
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A. Angiosperm

B. Gymnosperm

C. Bryophytes

D. Zerophytes

1520. The protoplasm is________________?
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A. Semi-solid

B. Colloidal solution

C. Solution

D. Crysto colloidal solution
1521. The carrier of genetic information is __________________?
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A. Carbohydrates

B. Protein

C. Ribosome

D. Nucleic acid
1522. Plants can be made disease resistant by___________________?
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A. Hormone spray

B. Colchicines treatment

C. Breeding with the wild variety

D. Heat treatment

1523. The union of the second male gametes with polar nuclei is called_______________?
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A. Fertilization

B. Double fertilization

C. Both a & b

D. non of these

1524. Who discovered mitochondria__________________?
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A. Palade

B. Cowdry

C. Garner

D. Altmann
1525. A process off converting light energy into useful chemical energy_________________?
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A. Transpiration

B. Photosynthesis

C. Photoperiodism

D. Conversion

1526. Cucumber, Kidney bean, pea and tomato are the example of _______________________?
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A. Long day and Long night plants

B. Day natural plants

C. Long night plants

D. Long day plants

1527. Kinds of nitrogen containing bases fond in RNA are__________________?
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A. Six

B. Four

C. Eight

D. Two

1528. The policy level of commercially cultivated seedless watermelon is__________________?
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A. Tetraploid

B. Diploid

C. Triploid

D. Monoploid

1529. The giant chromosomes of Drosophila are found in_____________________?
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A. Salivary glands

B. Muscles

C. Testes

D. Ovaries

1530. Rooting of shoots, stems or branches while they are still attached to the parents is called__________________?
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A. Layering

B. Ground Layering

C. Division

D. Budding

1531. Linked gene may be separated by the process of_________________?
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A. Evolution may be described as

B. History of development of larger biological units

C. Discontinuous genetic variation

D. Inheritance of acquired characters
1532. Strawberry belongs to what type of fruit ?
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A. Aril

B. Etario of achenes

C. Berry

D. Pome

1533. A branch of science which deals with ornamental and vegetables is called___________________?
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A. Floriculture

B. Agriculture

C. Horticulture

D. Sericulture

1534. Tomato is good source of vitamin___________________?
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A. Vitamin B

B. Vitamin A

C. All the above

D. Vitamin C

1535. A physiological aging activity in which plant tissues degenerate and ultimately die is called___________________?
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A. Fruit ripening

B. Maturity

C. Senescence

D. Both a & b

1536. Headquarter of union for the protection of new plant varieties is in__________________?
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A. Switzerland

B. USA

C. Thailand

D. Den nark

1537. If a heterozygous tall plant is crossed with a homozygous dwarf plant the proportion of dwarf progerry will be__________________?
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A. 100%

B. 25%

C. 75%

D. 50%
1538. Crossed between mandarin and grape fruit make________________________?
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A. Citrange

B. Tangelos

C. Limequate

D. None of the above

1539. which of the following probably occur when a diploid cell undergoes normal meiotic division________________?
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A. All homologous chromosome pairs will separate

B. All dominant genes will segregate together into daughter cells

C. All daughter cells will have different homologous chromosome pairs

D. All linkage group will be disrupted

1540. Sweet potato is___________________?
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A. Fruit

B. Rhizome

C. Root

D. Tuber

1541. What are the factors which influence the efficiency of respiration_____________________?
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A. Temperature

B. Oxygen

C. All the above

D. Substrate

1542. Species which give out long and flexible branches, the shoot to be layered is covered with soil at several places to encourage rooting at more than one point is called ___________________?
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A. Serpentine layering

B. Air layering

C. Ground layering

D. Stool layering

1543. How much of the earth surface is covered with water ___________________?
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A. 70%

B. 40%

C. 65%

D. 80%

1544. A transonic individual has chromosome number____________________?
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A. 2 n+2

B. 2 n+3

C. 2 n+1

D. 2 n-1

1545. Photosynthesis takes place in_____________________?
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A. none

B. Only leaves

C. All green parts of plants

D. Only flowers and fruits

1546. The cellular structure which always disappears during mitosis is___________________?
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A. Plastids

B. Nuclear and membrane

C. Membrane

D. Protoplasm

1547. Which feature is not found in all living beings____________________?
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A. Some triplet code for amino acids

B. Energy storage in high high energy phosphate bonds

C. Types of protein occurring in the body

D. Protein synthesis in ribosomes

1548. Some use of cytokinins in horticulture are________________?
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A. Accelerating bud growth

B. To stimulate shoot development

C. Delaying senescence

D. All the above
1549. Self supporting succulent plants are called____________________?
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A. Succulents

B. Shurbs

C. Off shoots

D. Herbs
1550. An exce4ption of Mendels law is______________________?
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A. Purity of gametes

B. Dominance

C. Liukage

D. Independent assortment