Session 1: Nursery and Its Importance
Textual Question-Answers
Check Your Progress
Fill in the Blanks
1. A place where seedlings or planting material is raised undercontrolled conditions is known as ——————
Ans: nursery
2. A type of nursery established for an ongoing project of landscapingis ——————
Ans: project nursery
3. Temporary nursery is also known as ————— nursery.
Ans: casual
4. Permanent nursery may also be called a —————— nursery.
Ans: central
5. Commercial nursery supplies ————— continuously, wheneverrequired.
Ans: planting material
Multiple Choice Questions
1. Nursery raising ———— overall period of the crop in the mainfield.
(a) reduces
(b) optimises
(c) maximises
(d) None of the above
Ans: (a) reduces
2. Temporary nursery is —————
(a) for seasonal planting
(b) nursery on site
(c) for planting in forest and hilly regions
(d) All of the above
Ans: (d) All of the above
3. Nursery established under a protected structure is known as ————————
(a) hi-tech nursery
(b) technical nursery
(c) low-cost nursery
(d) All of the above
Ans: (a) hi-tech nursery
4. Cytokinins are hormones that help in ———————
(a) cell division
(b) ripening
(c) cell elongation
(d) cell enlargement
Ans: (a) cell division
5. Complex organic compounds applied in minute quantities to promote or inhibit the growth of the plant are —————
(a) PGRs
(b) micro-elements
(c) organic fertiliser
(d) macro-elements
Ans: (a) PGRs
Subjective Questions
1. Do you think nurseries are important?
Ans: Yes, nurseries are important because they provide healthy and qualityplanting material, ensure uniform growth of plants and help in saving time, labour and cost in crop production.
2. What are the different kinds of nurseries? Describe the benefitsof one of them.
Ans: The different kinds of nurseries are temporary nursery, permanent nursery, commercial nursery, project nursery and hi-tech nursery. A permanent nursery is beneficial because it supplies planting material throughout the year, maintains mother plants and ensures continuous availability of qualityseedlings.
3. Why are Plant Growth Regulators used?
Ans: Plant Growth Regulators are used to promote or inhibit plant growthprocesses such as rooting, flowering, fruiting and ripening in a controlledmanner.
Match the Columns
A
1. Auxins
2. Cytokinins
3. Gibberellins
4. Ethylene
B
(a) Ethephon
(b) GA3
(c) Kinetin
(d) NAA
Ans:
1 – (d) NAA
2 – (c) Kinetin
3 – (b) GA3
4 – (a) Ethephon
