1551. In meiosis homologous chromosomes separate from each other in ______________________?
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A. Auaphase I

B. Metaphase II

C. metaphase I

D. Anaphase II

1552. When the corolla has four clawed petals inserted at right angle other is said to be_____________________?
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A. Papilliaci

B. Rosaceous

C. Cruciform

D. Tubular

1553. Storage life of lemon is____________________?
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A. 4-5 weeks

B. None of the above

C. 6 weeks

D. 7 weeks

1554. One of the following is not an advantage of genetic engineering___________________?
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A. The gene pool is maintained

B. Genetic error can be rectified

C. Microbes act as biological factories

D. Improvement of crop can take place

1555. If a plant heterozygous for tallness is selfed, f2 feneration has both tall and dwarf plants. this proves the principle of__________________?
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A. Dominance

B. Segregation

C. Incomplete dominance

D. Independent assortment

1556. Ribosomes are important because they help in __________________?
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A. Growl

B. Protein synthesis

C. Respiration

D. Movement

1557. A phenomenon of fusion of male and female gametes is known_______________?
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A. Interaction

B. All the above

C. Gamete formation

D. Fertilization
1558. The most highly advanced division in plants kingdom is____________________?
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A. Taxonomy

B. Pteridophtes

C. Tracheophyta

D. None of the above

1559. Edible part of pomegranate is____________________?
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A. Monocarp

B. juicy test

C. juicy epicure

D. juicy hairs

1560. Temperate fruits requires certain amount of chilling to flower, which one is the important temperate fruit from the following list__________________?
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A. Mango

B. All the above

C. Litchi

D. Apple
1561. Plants with persistent leaves are___________________?
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A. Deciduous

B. Perininals

C. Binuiatis

D. Evergreen
1562. Cultivation of grapes is called___________________?
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A. Ciltriculture

B. Orcharding

C. Viticulture

D. Pomology

1563. The ratio of CO2 and O2 uptaken during respiration is known as_____________________?
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A. Respiration

B. Respiratory quotient

C. Both a & b

D. None of the above

1564. Citrus has its origin in____________________?
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A. South America

B. Africa

C. Indo- Chinese region

D. Middle east

1565. Spinach, althea, winter wheat and oat are the example of____________________?
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A. Short day and long night plants

B. Long day plants

C. short day plants

D. Long day and short night plants
1566. mitosis is the normal process in a living cell but sudden and abnormal mitosis in an organ will some time result in__________________?
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A. Cancer

B. Zygote

C. New organ

D. Gastrula

1567. Seed is___________________?
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A. None of the above

B. Transformcd ovary after fertilization

C. Developed egg after fertilization

D. Seveloped ovary after fertilization

1568. RNA contains_____________________?
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A. 6 carbon sugars

B. 5 carbon sugars

C. 3 carbon sugars

D. 4 carbon sugars

1569. Gulkand is made from the most common beautiful flower of_______________?
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A. Rose

B. Jasmine

C. Chrysanthemum

D. Petunia

1570. Aging process in which all plant parts except seeds die is called_________________?
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A. Complete Senescence

B. Senescence

C. All the above

D. Partial Senescence

1571. Citrus belongs to the___________________?
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A. Citrea

B. All the above

C. Rutaceae

D. Announaceae

1572. A group of plants providing food, fiber and shelter is____________________?
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A. Gymnosperm

B. Monocotyledons

C. Angiosperm

D. Dieetyledens

1573. Heterosis results due to____________________?
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A. All the above

B. Overdominance

C. Epistasis

D. Dominance

1574. A pruning management done to develop a tree framework strong cough to bear large number of fruits without breaking of branches is known as _________________?
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A. Thinning

B. All the above

C. Punning

D. Training

1575. Polytene chromosomes were first observed by___________________?
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A. Mendel (1810)

B. Allard (1910)

C. Balbiani (1881)

D. Baranetzky (1910)

1576. Synthetic products which when applied to plants produce reactions almost identical to those caused by natural harmonics are called______________?
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A. Photoperiodism activants

B. Plant harmonics

C. Plant growth regulators

D. Plant growth promoters
1577. Splice grafting is most successful in___________________?
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A. Mango

B. Apple

C. Both a & b

D. None of the above

1578. Tomato would not have turned red if__________________?
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A. They were kept at the bottom layer of box

B. Less heyhad been put in the box

C. There were no ripe apples in the box

D. They were mixed with ripe apples

1579. The ratio of treatment variance to error variance is known as______________________?
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A. F-value

B. Correction factor

C. Critical difference

D. t-value

1580. Argemone mexicana is an objectional wed of__________________?
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A. Rapseed/mustard

B. Tomato

C. Barley

D. Oat

1581. The Potato is___________________?
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A. Rhizome

B. Sucker

C. Tuber

D. Fruit

1582. The reason why mutations which are harmful do not eliminated from gene pool is that___________________?
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A. They are recessive and carried by heterozygous individuals

B. Making possible reproduction in all types of environments

C. Genetic drift occurs because of a small population in to offsprings

D. They have future survival value

1583. Commercial growth inhibitors include__________________?
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A. Daminozide

B. All the above

C. Cycocel

D. Chlormequat

1584. Which one is C4 crop plant_____________________?
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A. Sugarcane

B. all the above

C. Sorghum

D. Maize

1585. Development of distorted swollen leaves which become inverted translucent and eventually necrotic is known as_________________?
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A. Death of plant

B. Vitrification

C. Bacterial contamination

D. Mosaicism

1586. Evolution proceed on account of____________________?
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A. Conversion pf organism to change of environment

B. Adaptations through genervation

C. Fossils

D. Struggle for existence

1587. A propagation technique in which instead of wrapping the notched portion is burried in the ground is called________________?
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A. Air layering

B. Ghooti

C. Ground layering

D. Layering

1588. Tender crop cannot tolerate a minimum temperature of ___________________?
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A. 0C

B. 2C

C. 1C

D. -1C

1589. A branch of Horticulture dealing with the production of fruits and their distribution is called_______________?
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A. Olericulture

B. Sericulture

C. Citricultire

D. Pomology
1590. Lettuce is____________?
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A. Leaf

B. Tuber

C. Fruit

D. Fruit

1591. Two allelie genes are located on_______________________?
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A. Two non homologous chromosomes

B. Same chromosomes

C. Any two chromosomes with one each

D. Two homologous chromosomes
1592. The role of nucleus in regulating the morphology of the plant was discovered in___________________?
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A. Acetabularia

B. Maize

C. pea

D. Macrospore

1593. The offspring of a cross between twp individuals differing in at least one set of characters is called__________________?
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A. Mutant

B. Variant

C. Polyploidy

D. Hybrid
1594. The mechanism ensuring genetic continuity in mitosis is____________________?
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A. Formation of two daughter cells with identical DNA

B. Segregation of maternal and paternal characters

C. Crossing over of the genes

D. Halving of chromosome nuriber between two daughter cells

1595. The recommended ratio of male the recommended of male rows to female rows in hybrid bajra production is_________________?
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A. 4 to 8

B. 3 to 6

C. 1 to 2

D. 2 to 4
1596. When an albino plant of maize (female) is crossed with normal green plant (male) all plants in the progeny are albino because___________________?
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A. Crossing over results in structural changes in green plastids

B. Albinism is dominant over green characters

C. Green plastids of male parent become nitrated

D. Plastids are inherited through maternal parents
1597. A form of controlled atmosphere storage in which the produce is stored in a partial vacuum is called_________________?
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A. Ca storage

B. Hypo baric storage

C. Gas storage

D. Modified storage

1598. Genus of citrus is____________________?
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A. Fortunal

B. All the above

C. Poncirus

D. Citrus

1599. Maturation of stamens and pistils at different times in the same flower is called___________________?
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A. Heterospory

B. Heterostyle

C. Dichogamy

D. Dichotamy

1600. Small new plants which grow out from the parent and can be separated as independent plant is called_____________________?
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A. Seeding

B. Suckers

C. Division

D. Offset