R4RIN – MCQs, Mock Tests | Agriculture Agriculture Agriculture Genetics Plant Breeding and Biotechnology set-2

Bulk population breeding is suitable for:

1. Fruit crops
2. Vegetable
3. Small grains
4. Flower crops

✅ Correct Answer: 3

Who suggested the imbiitions theory of ascent of sap?

1. Sir J.C.Bose
2. Sachs
3. Strasburger
4. Dixon and Jolly

✅ Correct Answer: 2

Dallus is:

1. An undifferentiated mass of cells
2. A gamete
3. A tissue
4. A modification of leaf

✅ Correct Answer: 1

Carolus Linnaeus is credited with introducing the:

1. Law of limiting factors
2. Law of independent assortment
3. Binomial system of nomenclature
4. Laws of inheritance

✅ Correct Answer: 3

Cauliflower cabbage broccoli kohlrabi and brussels sprouts have been derived from wild cabbage that still grows in coastal regions of:

1. Latin America
2. Mesopotamia
3. Europe and N. Africa
4. South Asia and South Africa

✅ Correct Answer: 3

Who is regarded as the father of botany?

1. Theofrastus
2. Gregor Mendel
3. Carolus Linnaeus
4. Oswald Tippo

✅ Correct Answer: 1

Who is credited with the discovery of mitosis?

1. Farmer and Moore
2. Huxley
3. Flemming
4. Robert Hooke

✅ Correct Answer: 3

Characteristic feature of xerophytes is:

1. Long taproot
2. Leaves and stem with thick cuticle
3. Sunken stomata
4. All of the above

✅ Correct Answer: 4

Characteristic feature of the hydrophytes is:

1. Reduced protective tissues
2. Feebly developed root system
3. Spongy stem
4. All the above

✅ Correct Answer: 4

Chauncey Goodrich was the first _____ to publish a paper dealing with resistance of potatoes to the blight diseases:

1. Britisher
2. German
3. Dutch
4. American

✅ Correct Answer: 4

China rose is a :

1. Herb
2. Shrub
3. Tree
4. Climber

✅ Correct Answer: 2

Chromosome numbers in somatic cells of a maize plant are:

1. 22
2. 26
3. 14
4. 20

✅ Correct Answer: 4

Chromosome which pair at meiotic prophase and are similar size shape structure and function are known as:

1. Homologous
2. Isocentric
3. Isochromosome
4. Acentric

✅ Correct Answer: 1

CIMMYT is located at:

1. Miexico
2. England
3. Spain
4. Nigeria

✅ Correct Answer: 1

Cliestogamy encourages:

1. Self pollination
2. Cross pollination
3. Apomixes
4. Inbreeding depression

✅ Correct Answer: 1

Clone in general is:

1. Homozygous
2. Heterogeneous
3. Heterozygous
4. None of the above

✅ Correct Answer: 3

Commercial banana have ______ instead of 22 chromosomes of ordinary diploid varieties:

1. 13
2. 23
3. 33
4. 43

✅ Correct Answer: 3

Composites are developed by using:

1. Advanced generation seed mixtures obtained from high yielding intervarietal or interracial crosses
2. Hybrid directly from intervarietal crosses
3. Recurrent selection for specific combining ability
4. The hybrid of an inbred with an open-pollinated variety

✅ Correct Answer: 1

Conifers are abundant in:

1. Tropical zone
2. Alpine zone
3. Temperate zone
4. Subtropical zone

✅ Correct Answer: 3

Cotton:

1. Is a self-pollinated crop
2. Is a cross pollinated crop
3. Is an often-cross pollinated crop
4. Is an often-self pollinated crop

✅ Correct Answer: 3

Creation of the world by God is basis of the:

1. Theory of eternity of present condition
2. Theory of special creation
3. Theory of catastrophism
4. All the above

✅ Correct Answer: 2

Cross between cytoplasmic male sterile x cytoplasmic male fertile:

1. Produce sterile F1
2. Produce fertile F1
3. Produce fertile sterile in 1:1 ratio
4. None of the above

✅ Correct Answer: 1

Cross of F1 hybrid with either parent is called:

1. Test cross
2. Single cross
3. Back cross
4. None of them

✅ Correct Answer: 1

Crossing over occurs at:

1. Two strand stage
2. Four strand stage
3. Three strand stage
4. None of the above

✅ Correct Answer: 2

Cuscuta is:

1. Total stem parasite
2. Partial stem parasite
3. Partial root parasite
4. Total root parasite

✅ Correct Answer: 1

Cytogenetically the definitive nucleus is:

1. Haploid
2. Diploid
3. Triploid
4. Tetraploid

✅ Correct Answer: 2

Date palm is:

1. Monoecious
2. Dioecious
3. Polygamous
4. None of the above

✅ Correct Answer: 2

Degenerated parts of plants and animals which do not serve any useful purpose are known as:

1. Un-useful structures
2. Vestigial structures
3. Essential organs
4. Unwanted structures

✅ Correct Answer: 2

Despite conspicuous deterioration of maize upon continuous setting it is more tolerant to inbreeding than:

1. Limabean
2. Barley
3. Alfalfa
4. Buckwheat

✅ Correct Answer: 3

Details of the kreb s cycle were worked out by the use of:

1. Radioactive carbon compounds
2. Ultracentrifugation
3. Electron-microscopy
4. X-ray crystallography

✅ Correct Answer: 1

Details of the kreb s cycle were worked out by the use of:

1. Radioactive carbon compounds
2. Ultracentrifugation
3. Electron-microscopy
4. X-ray crystallography

✅ Correct Answer: 3

Development and formation of pollen grains in anther of the stamen is known as:

1. Pollination
2. Fertilization
3. Microsporogenesis
4. Megasporogenesis

✅ Correct Answer: 3

Development of a fruit without fertilization is known as:

1. Parthenogenesis
2. Polyembrohy
3. Budding
4. Apomixes

✅ Correct Answer: 1

Who invented first compound microscope?

1. Robert Hooke
2. Jansen
3. Leeuwenhoek
4. None of these

✅ Correct Answer: 2

Development of seed without-sexual process is:

1. Apomixes
2. Polyembryony
3. Both (a) & (b)
4. None of the above

✅ Correct Answer: 1

Development of the pollen tube the seed and the 3n endosperm double fertilization is characteristic features of:

1. Bryophytes
2. Pteridophytes
3. Gymnosperms
4. Angiosper

✅ Correct Answer: 4

Disease reaction is by and large a process:

1. Physical
2. Chemical
3. Mechanical
4. Manual

✅ Correct Answer: 2

Disease rsistance in barley is:

1. Quantitative characteristics
2. Qualitative characteristics
3. Both (a) & (b)
4. None of the above

✅ Correct Answer: 2

DNA exists as a double helix as a result of hydrogen bonding between:

1. Sugar molecules
2. hosphate groups
3. Nucleohistones
4. Nucleosides

✅ Correct Answer: 3

DNA polymerase:

1. Helps is DNA replication
2. Helps in RNA replication
3. Helps in protein synthesis
4. None of the above

✅ Correct Answer: 1

DPD is the index of sucking power and is also known as:

1. Suction pressure
2. Wall pressure
3. Osmotic
4. Turgor pressure

✅ Correct Answer: 1

During mitotic cell division the total chromosome number:

1. Remains the same
2. Gets halved
3. Gets doubled
4. None of them

✅ Correct Answer: 1

Each cell of the female gametophyte is hapoid except:

1. Egg cell
2. Synergid cells
3. Antipodals cells
4. Definitive nucleus

✅ Correct Answer: 4

Each gramme of water transpired absorbs ______ kj of latent heat from the leaf and its environment:

1. 2.0 - 2.1
2. 2.2-2.3
3. 3.4-3.5
4. 2.7-2.8

✅ Correct Answer: 3

Each mature anther has:

1. One pollen sac
2. Two pollen sacs
3. Three pollen sacs
4. Four pollen sacs

✅ Correct Answer: 4

Each megaspore mother cell finally produces:

1. Four megaspores
2. Two megaspores
3. Only one megaspore
4. None of the above

✅ Correct Answer: 3

Each pollen mother cell produces four haploid cells as a result of:

1. Mitosis
2. Meiosis
3. One mitosis and then meiosis
4. None of the above

✅ Correct Answer: 2

Each stamen is differentiated into:

1. Filament
2. Anther
3. Connective
4. All of the above

✅ Correct Answer: 4

Electron microscope was invented by:

1. Jansen
2. Leeuwenhoek
3. Knoll and Ruska
4. None of the above

✅ Correct Answer: 3

Emasculation is:

1. Removal of male parts from a bisexual flower
2. Removal of female parts
3. Removal of male and female parts
4. None of the above

✅ Correct Answer: 1

Embryo-sac is:

1. Male gametophyte
2. Micro-gametophyte
3. Saprophyte
4. Female gametophyte

✅ Correct Answer: 4

Endosperm is store house for germinating embryo and it contains:

1. Hormones
2. Vitamins
3. Enzymes
4. All the above

✅ Correct Answer: 4

Epicalyx is the characteristic of the family:

1. Gramineae
2. Solanaceae
3. Malvaceae
4. Compositeae

✅ Correct Answer: 3

Who founded the cell theory?

1. Robert Hooke
2. Von Mohl and Nageli
3. Schwann and Schleiden
4. Gres and Malpigi

✅ Correct Answer: 3

Exchange of genetic material takes place between non-sister chromatids of homologous chromosomes during the:

1. Four stand stage in prophase I
2. Two strand stage in prophase I
3. Metaphase I stage in meiosis
4. Two strand stage in prophase II

✅ Correct Answer: 1

Female reproductive organ in the flower is:

1. Calyx
2. Corolla
3. Stamens
4. Carpals

✅ Correct Answer: 4

Flower colour in plants is a:

1. Qualitative chracter
2. Quantitative character
3. Both of them
4. None of them

✅ Correct Answer: 1

Flower is specialized:

1. Shoots
2. Leaf
3. Stem
4. Tendril

✅ Correct Answer: 2

Flowers having both androecium s and gynoecium s are said to be:

1. Hermaphrodite
2. Unisexual
3. Staminate
4. Pistilate

✅ Correct Answer: 1

For Hardy - Weinberg law to operate:

1. The population should be large
2. There should be open pollination
3. There should be no selection
4. ll the above

✅ Correct Answer: 4

Formation of new genes takes place due to:

1. Inversion
2. Transduction
3. Transversion
4. Mutation

✅ Correct Answer: 4

Fruit of candytuft is known as:

1. Legume
2. Siliqua
3. Silicula
4. Capsule

✅ Correct Answer: 3

Fruit of pea is known as:

1. Legume
2. Follicle
3. Siliqua
4. Capsule

✅ Correct Answer: 1

Fruit of sunflower is:

1. Caryopsis
2. Samara
3. Cypsela
4. Nut

✅ Correct Answer: 3

Fruits of calotropis are:

1. Legume
2. Siliqua
3. Capsule
4. Follicle

✅ Correct Answer: 4

Fusion of the one sperm (male gamete) and definitive nucleus results in the formation of:

1. Endosperm
2. Embryo
3. Saprophyte
4. Zygote

✅ Correct Answer: 1

Who established that character is transmitted from generation to generation through chromosomes?

1. Robert Brown
2. Robert Hooke
3. Nawaschin
4. Strasburger and Hertwig

✅ Correct Answer: 4

Generally embryosac is:

1. Monosporic
2. Bisporic
3. Tetrasporic
4. Octosporic

✅ Correct Answer: 2

Genes are made up of:

1. RNA only
2. DNA only
3. RNA nd DNA
4. Proteins

✅ Correct Answer: 2

Genetics is the study of:

1. Genes
2. Gene interaction
3. Heredity and variation
4. DNA

✅ Correct Answer: 3