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NABARD Agri 2025 > Seed Science > Flashcards

Seed Science Flashcards

1
Q

From which part of the ovule does the seed coat (testa) develop?

A

Integuments

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1
Q

Criticial Irrigation Stage for wheat?

A

1st: 20-25 days after sowing
2nd: 40-45 days after sowing

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2
Q

Phalaris minor and Avena fatua weeds resemble which crop?

A

wheat

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3
Q

This crop has a toxic limit of HCN at 200 ppm. Concentration decreases after 20 days. To overcome, avoid feeding this before 50 days stage. Hay & silage are HCN free. Identify

A

Sorghum

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4
Q

A fast growing, drought resistant tree, Native to india. Widely cultivated for its young seed pods & leaves. Used as a vegetable, for herbal medicine and water purification. Identify?

A

Moringa

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5
Q

A mechanism promoting cross pollination where pistils mature before stamen

A

Protogyny

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6
Q

Examples of Protogyny plants

A

Apple, Pear, Pearl Millet

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7
Q

Examples of Protandry plants

A

Carrot (Daucus carota), Walnut (Juglans …), Maize

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8
Q

Seed based disease of Wheat? It is caused by?

A

Loose smut
Ustilago tritici

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9
Q

Grain smut, Green ear, Ergot are seed based diseases of?

A

Pearl Millet or Bajra

Pennisetum glaucum. Grain smut is also for Sorghum

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10
Q

Early Blight & leaf spot are diseases of which plant?

A

Tomato

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11
Q

The generations of seed prodution, aka models of seed generation was given by?

A

Association of Official Seed Certifying Agency (AOSCA)

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12
Q

Tag size of Breeder Seeds & Certified seeds?

A

B = 12 x 6 cm
C = 16 x 7.5 cm

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13
Q

Tag Size of Foundation seeds and truthfully labelled seeds?

A

F = 15 x 7.5 cm
TL = 15 x 10 cm

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14
Q

Production of a particular class of seed up to certified seed stage.
It depends on?

A
  • Rate of genetic deterioration
  • Seed multiplication ratio
  • Total seed demand
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15
Q

Seed generation model for cross pollinated plants?

NBFC model

A

3 generations:
B+F+C

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16
Q

Seed generation model for self-pollinated crops?

A

4 generations:
B+F(I)+F(II)+C

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17
Q

Innate and induced are what kind of dormancy?

A

Secondary Dormancy
where,

Innate = hereditary, Induced = External (light, wind, etc)

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18
Q

Endogenous and Exogenous are what kind of dormancy?

A

Primary Dormancy

Endo = Due to embryo, Exo = Due to seed coat

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19
Q

Equipment to separate seeds based on weight/density?

A

Specific Gravity Separator

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20
Q

Equipment to separate seeds based on Size?

A

Air screen cleaner cum grader

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21
Q

Equipment to separate seeds based on Length?

A

Disc or indented cyinder separator

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22
Q

Equipment to separate seeds based on Shape?

A

Spiral Separator
or Draper Separator

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23
Q

Equipment to separate seeds based on Surface texture (rough/smooth)?

A

Roll mill / Dodder mill

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24
Q

An imp machine in cleaning plants, uses screens and aspirations. Upper screen removed larger material and lower stops the seeds to let through finer matter. Cleaning is a process of gradually shifting out smaller particles.

A

Air screen cleaner

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25
Q

Dried seeds should be cleaned and graded with the help of?

A

Cleaner cum grader

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26
Q

Consists of a seies of discs. A very precise separator, only seed length and shape affects it, flexibility is obtained by varying the size of pockets. It is?

A

Disc Separator

R pocket for rice and V pocket for round grains

27
Q

An equipment that uses a combination of pocket size, centrifugal force, friction & gravity to make seed separations possible. Short seeds are lifted out of the seed mass and long seeds remain in the cylinder.

A

Indented Cylinder separator

28
Q

This separator classifies seed according to its shape and rolling ability. based on roundness of seeds

A

Spiral Separator

29
Q

13th National Seed Congress was organised in?

A

Varanasi
At International Rice Reserch Institute South Asia Regional Centre (ISARC)

30
Q

Full form of SATHI Portal by MoAFW & NIC

A

Seed Authentication, Traceability & Holistic Inventory

Transparent Seed Certification

31
Q

National organisation involved in Seed productions?

A

NSC, SSC and KVK

32
Q

Indian Society of Seed Technology was established in?

A

1971
Pune, Maharashtra

33
Q

Seed replacement rate of tomato?

A

99.3%

34
Q

Seed relacement rate of brinjal?

A

63.4%

35
Q

Seed multipication rate of potato?

A

1:4

36
Q

Seed Multiplication rate of hybrid paddy?

A

1:100

Also Sorghum & Watermelon

37
Q

Crop that has the highest seed multiplication ratio among vegetables?

A

Brinjal

38
Q

Most critical state for rouging in seed production?

A

Flowering stage

39
Q

Centralised portal and mobile app for seed traceability, authentication and inventory designed to deal with the challenges of seed production, quality seed identification and seed certification.

A

SATHI

40
Q

What is the theme of SATHI portal by MoAFW and NIC?

A

Uttam Beej - Samriddh Kisan

41
Q

Seed rate (kg/ha) for paddy by:
- broadcasting is?
- Drilling is?

A
  • 100-120 kg/ha
  • 70-90 kg/ha
42
Q

Inter-row spacing and intra-row spacing of paddy?

A

Inter-row spacing: 20cm
Intra-row spacing: 10-15 cm

43
Q

Seed rate of paddy for?
- Rainfed Lowlands
- Aerobic Rice Cultivation

A
  • Rainfed: 75-100 kg/ha
  • Aerobic rice: 5-6 kg/ha
44
Q

Milling % of paddy is?

A

50-70%

45
Q

Seed multiplication ratio of paddy?

A

1:80

46
Q

Gluten and Amylose content is associated with which cereals

A

Gluten: Wheat - gives it a spongy, stretchy quality
Amylose content: Rice - makes rice non-sticky on cooking

47
Q

Amylose content in rice is?

A

15-37%

48
Q

Seed rate for wheat in:
Broadcasting?
Seed Drills?
Dibbling?

A

Broadcasting: 150 kg/ha
Seed Drills: 100-125 kg/ha
Dibbling: 25-30 kg/ha

49
Q

Most critical stage for water in wheat and rice?

A

Crown root initiation (20-25 days) and the flowering stage (80-85 days)
Rice: Booting Stage

50
Q

Transition period between root and shoot development in wheat?

A

Crown Root Initiation Phase

51
Q

The stage where the milky fluid in wheat grain harden is called?

A

Dough Stage

52
Q

Tag colour of different seed generations - NBFC-T?

A

N - No colour
B - Golden Yellow
F - White
C - Blue
T - Green

53
Q

Seed Village Programme was launched by MoAFW in?

A

2014-15

54
Q

Seed Village programme is a key component of?

A

Sub-Mission on Seeds & Planting Material

55
Q

Financial assistance in Seed Village programme for cereals & others?

A

Cereals: 50% of seed cost
Others: 60%

others = pulses, oilseeds, fodder & green manure

56
Q

National Seed Reserve is a part of which scheme?

A

Seed Village Programme (2014-15)

Beej Gram Yojana

57
Q
  • Set up under Multi-State Cooperative Society Act 2002.
  • Jointly promoted by AMUL / GCMMF, IFFCO, KRBHCO & NAFED?
A

NCEL (2023)

National Cooperative Exports Ltd

58
Q

Bio fertilizer for rice is?

A

Azolla

59
Q

Scotch grass or buffalo grass is aka?
Doob is another name for?

A

Para grass
Bermuda Grass

60
Q

Scientific name of Makhana?

belongs to family?

A

Euryale ferox

Water Lily - Nymphaeaceae

61
Q

Fox Nut & Gorgon Plant are the names of?

A

Makhana

grows through rhizome

62
Q

Akiochi disease is due to the toxicity of?

A

Sulphur

63
Q

Acc to UAS, drone based application of pesticide dec the use by ___% and inc cost efficiency by ___%

the University of Agricultural Sciences India

A

Use: 15%
23%

64
Q

‘Paddy, raw rice’ storage moisture content?

A

14%

65
Q

Storage moisture content of Parboiled rice?

A

15%

66
Q

Storage moisture content of groundnut & mustard?

A

6%

NABARD Agri 2025 (26 decks)

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