R4RIN – MCQs, Mock Tests | Agriculture Agriculture Agriculture Genetics Plant Breeding and Biotechnology Set-5

The main type of endosperm development is:

1. Nuclear type
2. Cellular type
3. Both (a) & (b)
4. None of above

✅ Correct Answer: 3

The majority of halophytes show:

1. Mesomorphic character
2. Hydromorphic character
3. Xeromorphic caracter
4. None of above

✅ Correct Answer: 3

The male sterile line is a cross to produce hybrid seed is known as:

1. A line
2. R line
3. C line
4. None of them

✅ Correct Answer: 1

The mechanism of male sterility in self-pollinated crops can be successfully utilised to obtain:

1. Selfed seed
2. Mutated seed without radiation treatment
3. Hybrid seed without emasculation
4. Sterile seed

✅ Correct Answer: 3

The mendel s laws of inheritance were rediscovered in 1900 by:

1. Bateson and Punnet
2. Beadle Tatum and Leader-berg
3. Watson and Crick
4. Correns de Varies and Tschermak

✅ Correct Answer: 4

The minute scaly outgrowths borne at the upper end of the leaf sheath as in Gramineae are called:

1. Bract
2. Bracteole
3. Stipule
4. Ligule

✅ Correct Answer: 4

The mode of arrangement of ovules in the cavity of ovary is known as:

1. Pollination
2. Aestivation
3. Placenatation
4. Fertilization

✅ Correct Answer: 3

Which of the following breeding procedures are not used for producing new varieties of self-pollined crop?

1. Recurrent selection
2. Mass selection
3. Pure line selection
4. Hybridization

✅ Correct Answer: 2

Which is the monoecious plant?

1. Maize
2. Datepalm
3. Rice
4. Mango

✅ Correct Answer: 1

The normal eye colour in Drosphila is red. But mutants occur having white eye and also different shades ranging between white and red which are all recessive to red while white colour is recessive to all others. This phenomenon is due to:

1. Pseudodominance
2. Pseudoallelism
3. Codominance
4. Polygenes

✅ Correct Answer: 1

The nucleus of the cell was first discovered by:

1. Robert Brown
2. Robert hHooke
3. Strasburger
4. Boveri

✅ Correct Answer: 1

The necleus of the functional megaspore divides:

1. Meiotically
2. Asexually
3. Apomictically
4. Mitotically

✅ Correct Answer: 4

The number of chromosome in common wheat is:

1. 36
2. 38
3. 48
4. 42

✅ Correct Answer: 4

The number of stamens is indefinite in:

1. Cruciferae
2. Solanaceae
3. Papillionaceae
4. Malvaceae

✅ Correct Answer: 4

The nutritive tissue which is infact a remnant of the nucleus to called:

1. Endosperm
2. Perisperm
3. Yolk
4. None of the above

✅ Correct Answer: 2

The seeded fruit of rice or maize grain is called:

1. Berry
2. Pepo
3. Siliqua
4. Caryopsis

✅ Correct Answer: 4

The only force responsible for the movement of water through a membrane is:

1. Molecular activity
2. Hydrostatic pressure
3. Osmotic pressure
4. All the above

✅ Correct Answer: 4

The ovary of family liliaceae is:

1. Trilocular superior with axile placentation
2. Trilocular inferior with parietal placenation
3. Trilocular inferior with basal placentation
4. Trilocular superior with free central placentation

✅ Correct Answer: 1

The particles of hemicolloides have size (diameter) round about:

1. Less than 1 mu
2. Between 1 mu and 100 mu
3. 1 mu
4. More than 100 mu

✅ Correct Answer: 3

The phenomenon is called misogamy when the tube enters into the embryo sac through:

1. Micropyle
2. Chalaza
3. Integuments
4. None of the above

✅ Correct Answer: 3

The physical basis of heredity is termed as:

1. Gene pool
2. Gene frequency
3. Germplasm
4. None of the above

✅ Correct Answer: 1

The place on the stem or branch where one or more leaves arise is known as:

1. Internode
2. Node
3. Apex
4. Sheath

✅ Correct Answer: 2

The placentation is mustard is:

1. Marginal
2. Parietal
3. Axile
4. Basal

✅ Correct Answer: 2

The plant that grow in very dry places and can withstand a prolonged period of drought uninjured are:

1. Hydrophytes
2. Hygrophytes
3. Mesophytes
4. Xerophytes

✅ Correct Answer: 4

The plant which is growing in saline soils or saline water with preponderance of soil in it is said:

1. Mesophytes
2. Xerophytes
3. Hygrophytes
4. Halophytes

✅ Correct Answer: 4

The plants which grow in water or in very wet places are

1. Hydrophytes
2. Hygrophytes
3. Mesophytes
4. Epiphytes

✅ Correct Answer: 1

The plants which grow in water deserts are called:

1. Mesophytes
2. Hydrophytes
3. Xerophytes
4. Halophytes

✅ Correct Answer: 3

The plants which occur in moist shady places in forests or in the moist soil near waterlogged localities are:

1. Hydrophyte
2. Hygrophytes
3. Xerophytes
4. Mesophytes

✅ Correct Answer: 1

The plasma membrane is:

1. Impermeable membrane
2. Semi-permeable
3. Permeable
4. None of the above

✅ Correct Answer: 2

The point of attachment of the body of the ovule is its funicle is known as:

1. Chalaza
2. Raphe
3. Hilum
4. Stalk

✅ Correct Answer: 3

The pollen along with pollen tube is known as:

1. Microspore
2. Pollengrain
3. Megaspore
4. Male gametophyte

✅ Correct Answer: 4

Which is the dioecious plant?

1. Maize
2. Marigold
3. Vallisneria
4. Rice

✅ Correct Answer: 3

The pressure responsible for pushing the membrane against the cell wall is termed as:

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

✅ Correct Answer: 4

The process of formation of eggs in animals is called:

1. Oogenesis
2. Telophase
3. Oogonium
4. None of them

✅ Correct Answer: 1

The process of formation of sperms in animals is known as:

1. Spermatogonium
2. Spermatogenesis
3. Spematid
4. None of them

✅ Correct Answer: 2

The process of making the expression of a non-allelic gene by another gene or gene pair is known as:

1. Epistasis
2. Hypostasis
3. Nobilisation
4. None of the above

✅ Correct Answer: 1

The process of megasporogenesis occurs in:

1. Embryosac
2. Egg cell
3. Pollensac
4. Ovule

✅ Correct Answer: 4

The process double fertilization was first discovered by:

1. Nawaschin
2. Strasburger
3. Robert Brown
4. Hugo de Vries

✅ Correct Answer: 1

The production of double cross hybrid in maize was first suggested by:

1. Shull
2. East
3. Jones
4. Hull

✅ Correct Answer: 3

The production of double cross hybrid in maize was first suggested by:

1. Megasprogenesis
2. Microsporgensis
3. Gametogenesis
4. Sporogenesis

✅ Correct Answer: 4

The production of sperms is known as:

1. Megagametogenesis
2. Microsporogenesis
3. Microgametogenesis
4. Megasporogenesis

✅ Correct Answer: 3

The proportion of one allele as represented in a breeding population is known as:

1. Gene frequency
2. Gene pool
3. Both of the above
4. None of the above

✅ Correct Answer: 1

The provision of light of shorten wavelength at the same time as longer red wavellength _______ photosynthesis:

1. Maintains
2. Enhances
3. Reduces
4. None

✅ Correct Answer: 2

The raw materials required for photosynthesis in vascular plants are:

1. CO2 and water
2. CO2 water and mineral
3. CO2 water mineral salts and chlorophyll
4. CO2 water and mineral salt

✅ Correct Answer: 3

The removal of apical buds and young leaves ______ branching.

1. Decreases
2. Increases
3. Maintains
4. No effect

✅ Correct Answer: 2

The replication of DNA is:

1. Conservative
2. Non-conservative
3. Semi-conservative
4. Direpersive

✅ Correct Answer: 3

Which is a common method used in cross-pollinated crops?

1. Mass selection
2. Bulk method
3. Pure line method
4. Pedigree method

✅ Correct Answer: 4

The science dealing with variation and heredity is called:

1. Immunology
2. Cytology
3. Genetics
4. Radiology

✅ Correct Answer: 3

The science which deals with the study of interrelationship between the living organisms and the various factors of the environment surrounding them as:

1. Botany
2. Biology
3. Ecology
4. Zoology

✅ Correct Answer: 3

The scientific name of bread wheat is:

1. T. durum
2. T. dicoccum
3. T. aestivum
4. T. monecoccum

✅ Correct Answer: 3

The scientific name of maize is:

1. Glycine max
2. Hordeum vulgare
3. Zea mays
4. None of them

✅ Correct Answer: 3

The segregation of individuals in the F2 or in a later generation of a cross which shows a more extreme development of a character than either parent is termed as:

1. Hybridisation
2. Heterosis
3. Linkage
4. Transgressive segregates

✅ Correct Answer: 4

The series of changes in the vegetation of a pond lake marsh or a stream are together known as:

1. Hydrosere
2. Xerosere
3. Biosphere
4. None of above

✅ Correct Answer: 1

The series of changes in the vegetation of bare rocky beds rocky hill slopes sand beds into extreme scarcity of water are together known as:

1. Mesosere
2. Xerosere
3. Xerophytes
4. None of the above

✅ Correct Answer: 2

The situation where an egg cell is developed into an embry without fertilization is described as:

1. Apomixis
2. Parthenocarpy
3. Sexual reproduction
4. Parthenogenesis

✅ Correct Answer: 4

The slender stalk by which ovule is attached to the placenta is known as:

1. Funicle
2. Hilum
3. Raphe
4. Chalaza

✅ Correct Answer: 1

The stage of prophase occur in:

1. Mitosis
2. Meiosis
3. Amitosis
4. Free cell formation

✅ Correct Answer: 2

The staminate ______ plants out yield pistillate plants by about 25 per cent.

1. Asparagus
2. Lettuce
3. Spinach
4. Hemp

✅ Correct Answer: 1

The structure of chromosome can best be observed during:

1. Prophase
2. Metaphase
3. Anaphase
4. Telaphase

✅ Correct Answer: 2

The study of ecology from the standpoint of individual species is called:

1. Synecology
2. Phytogeography
3. Autecology
4. None of the above

✅ Correct Answer: 3

The sugar found in DNA is:

1. Deoxyribose
2. Ribose
3. Fructose
4. Maltose

✅ Correct Answer: 1

When we place a living plant cell in a solution with an osmotic potential identical to that of its own cell sap the solution is:

1. Hypertonic
2. Hypotonic
3. Isotonic
4. None of the above

✅ Correct Answer: 3

The surface tension in any liquid is ______ related to the temperature:

1. Universally
2. Directly
3. Indirectly
4. Does not

✅ Correct Answer: 1

The tap root system is normally meant to:

1. Absorb water and mineral salts from the soil
2. Conduct water and mineral salts to the stem
3. Give proper encharge to plant
4. All of the above

✅ Correct Answer: 4

The term epistasis was originally used by _____ in 1909 to describe genes whose effects mark or cover the effects of other genes:

1. Wagner
2. Bateson
3. Hayman
4. Atwood

✅ Correct Answer: 2

The term genetics was coined by:

1. Gregor Mendel
2. Bateson
3. T.H. Morgan
4. H.J. Mujer

✅ Correct Answer: 2

The term heterosis was first used by:

1. Mendel
2. Shull
3. Bateson
4. Punnet

✅ Correct Answer: 2