List of top Plant Sciences Questions on Seed Science

Which of the following statements are INCORRECT about 'Enforced seed dormancy'?
• [(A).] Enforced seed dormancy occurs due to certain genetical and physiological factors. 
• [(B).] Enforced seed dormancy is truly a specific character of the seeds. 
• [(C).] High soil temperature and $NO_3$ content of the surface soil may help break the enforced seed dormancy. 
• [(D).] Cultivation practices may also break the enforced seed dormancy by exposing the seeds to better aeration. 
Choose the correct answer from the options given below: 
 

The characteristic features of monocot seeds include- 
• [(A).] Seeds germinate bearing a short axis called Plumule and Radicle. 
• [(B).] Plumule and Radicle are enclosed in a sheath called Coleoptile and Coleorhiza, respectively. 
• [(C).] The radicle grows downward and develops into the root system. 
• [(D).] The cotyledon of the seeds of the monocot crop Sorghum (Jowar) is known as 'Husk'. 
Choose the correct answer from the options given below: 
 

Different classes of seeds have various levels of genetic purity (%) standards. Arrange the following classes of seeds in ascending order of their genetic purity. 
• [(A).] TL Seeds 
• [(B).] Breeders seeds 
• [(C).] Foundation seeds 
• [(D).] Certified seeds 
Choose the correct answer from the options given below: 
 

Given below are two statements, one is labelled as Assertion (A) and other labelled as Reason (R).
Assertion (A): Foundation seed is the progeny of breeder seed or the first generation of seed produced after breeder seed.
Reason (R): Foundation seed is primarily used for research purposes only.
In light of the above statements, choose the most appropriate answer from the options given below.
Which of the following is a common strategy used by seeds to survive harsh environmental conditions?
Which of the following seed testing methods assesses seed viability by artificially enhancing the age of the seeds?
Which one of the following factors influences the determination of isolation distance requirements in cross-pollinated crops?
Match List-I with List-II

List-I: Seed Tests & List-II: Purpose
(A). Grow-out test & (I). Leachate discharge
(B). Tetrazolium test & (II). Seed coat permeability
(C). Electrical conductivity & (III). Seed purity
(D). Imbibition test & (IV). Seed viability
Choose the correct answer from the options given below:
Match List-I with List-II

List-I: Seed type & List-II: Examples
(A). Orthodox seed & (I). Coffee
(B). Recalcitrant seed & (II). Chickpea
(C). Impermeable seed coat & (III). Capsicum
(D). Hypogeal germination & (IV). Soybean (wild type)
Choose the correct answer from the options given below:
Which of the following groups of seeds represents the orthodox class of seeds?

Match List-I with List-II

List-I (Seed Class)List-II (Description)
(A) Breeder seed(I) Seed produced from foundation seed
(B) Foundation seed(II) Genetically pure source for breeder seed
(C) Nucleus seed(III) Source for certified seed
(D) Certified seed(IV) Produced from nucleus seed
Match List-I with List-II

List-I (Name of the machine or components in a seed processing unit) & List-II (Type of operation it does)
(A) Electric color sorter & (II) Separates off-colored seeds
(B) Inclined draper & (IV) Separation of smooth or round seeds from rough, flat, or
& elongated seeds
(C) Pneumatic separator & (I) Separate heavy seeds from lightweight materials or chaffy grains
(D) Disc separator & (III) Size grade of seeds for precision planting

Given below are two statements :
Statement (I) : Erect and flat flag leaves interrupt pollen dispersal leading to poor seed set in the rice hybrid seed production program.
Statement (II) : The use of a 'flag leafless male sterile line' (lines without flag leaves) would increase the yield of hybrid seed production.
Match List-I with List-II

List-I (Chemical) & List-II (Seed related tests)
(A) $GA_3$ & (II) Seed germination
(B) Thiourea & (IV) Seed dormancy
(C) 2,3,5-triphenyl tetrazolium chloride & (I) Seed viability
(D) Calcium chloride & (III) Seed longevity

Given below are two statements :
Statement (I) : Mature corn seed is exalbuminous.
Statement (II) : A full-grown corn embryo contains a single cotyledon within it.
Given below are two statements, one is labeled as Assertion (A) and the other one is labeled as Reason (R).
Assertion (A) : The seeds of wild-type soybean (Glycine soja) lives longer than the seeds of cultivated type (G. max L.)
Reason (R) : The wild-type soybean (Glycine soja) seeds are small, black, and have an impermeable seed coat with very little content of oil that might enhance the seed longevity.
Given below is a set of statements about 'Field counts' conducted during the inspection of the seed production field. Select the group of the most appropriate statements -
(A) It is necessary to take a minimum of 5 counts for up to 2 ha seed production field and one additional count for every additional area of 2 ha or part there.
(B) For a seed production area of 6 to 8 ha, the minimum number of counts to be made is 8.
(C) Number of plants or heads per count in sunflowers is 1100.
(D) Number of plants or heads per count in soybean is 1000.
Choose the correct answer from the options given below :
Replacing old seeds with new ones is important in maintaining or enhancing the production of a crop. Usually, the higher the seed replacement rate, the better the production. In the case of a hybrid of a crop, the seed replacement rate is -
During hybrid seed production, detasseling is done to avoid self-pollination. In which of the following crops, detasselssing is done during hybrid seed production ?
Which one of the following terminology does NOT represent the seed dispersal mechanism in crops/plants ?
A seed technologist placed a set of 100 seeds for a germination test. After 8 days, she found that 70 seeds germinated and 30 seeds did not. The most probable reasons for the no germination of these 30 seeds are -
(A) The seeds were not viable at all
(B) The seed coat was impermeable
(C) The seed coat was permeable but the seeds were dead
(D) The seeds were viable but the conditions for the germination were not favorable
Choose the correct answer from the options given below :
One of the most important considerations during the maintenance and production of Breeder's seed in an open-pollinated variety (OPV) is the -
The breeding method usually used to produce the nucleus seeds of a variety of cereal crops is -