Lab Exercise 1 - Identification and Classification of Crops Flashcards
How are crops described and judged?
based on similarity of morphological charateristics, henced assessed features of the crop are associated with its common or scientific name
what are used to formally identify crops?
scientific names
True or False:
Common names are used to identify crops
False, because common names of plants differ from language to language
scientific names are used to formally identify crops
scientific names are assigned by ICN
what does ICN stand for?
International Code of Nomenclature for algae, fungi, and plants
aside from ICN, ICNCP also assigns the rules for scientific names
What does ICNCP stand for?
International Code of Nomenclature for Cultivated Plants
True or False:
Each crop has only one scientific name
True, there is only one accepted legitimate scientific name but nomenclature changes through time
formal system used to identify crops at the species level
binomial nomenclature
the binomial nomenclature has two parts; the first part is a generic name and the second part identifies the crop’s species
What does the first part identifies?
the crop’s genus
the binomial nomenclature has two parts; the first part is a generic name and the second part identifies the crop’s species
What is the second part?
a specific epithet
Scientific names are in what language?
latin
True or False:
When writing a scientific name typewritten, it should be underlined per part
False, scientific names should be written:
if handwritten - underlined per part
if typewritten - italicized
True or False:
When scientific names are typewritten, it should be italicized
True
True or False:
Crop will only have one specific scientific name
False, although plants only have one legitimate accepted scientific name, nomenclature changes through time and names in the present can be turned to synonyms instead in the future
crop classification systems important in crop production discussed
- Botanical (General)
- Based on use or purpose for which the crop is grown
enumerate the different ways to classify crops based on the general classification
- according to the mode of reproduction
- according to life cycle
- according to growth habitat
What are the different classifications of crops according to the mode of reproduction?
sexual and asexual
plants that develop after undergoing meiosis and fertilization in the flower to produce a viable embryo in the seed
Bonus: How was the plant classified?
sexual
bonus: according to the mode of reproduction
plants that are produced by any vegetative means not involving meiosis and the union of gametes
bonus: Under what classification is this definition under?
asexual
bonus: general/botanical classification of crops
How can you produce a plant asexually?
bonus: give specific examples
by any vegetative means
bonus: grafting, cuttings, tissue culture
True or False:
Crops can only either have sexual or asexual modes of reproduction
False, some crops have both sexual and asexual modes of repoduction
Does strawberries reproduce sexually or asexually?
Both, strawberries are able to reproduce through seeds and their vegetative parts
classification of plants according to their life cycle
annuals, biennials, perennials
plants that does not die after flowering and lives from year to year
perennials
Modified True or False:
Biennials complete their cycle in one growing season
False, annuals complete their cycle in one growing season while biennials requires two years or at least part of two growing seasons with a dormant period between growth stages to complete their life cycle
classification of cabbage according to their life cycle
biennial
True or False:
the biological life cycle and life cycle in cultivation of carrots and cabbages is two growing seasons
False, carrots and cabbages are biennials according to their biological life cycle but both crops are harvested before flowering for higher economic yield
a carrot’s and cabbage’s biological life cycle and _______ are different
life cycle in cultivation
both crops are harvested before they flower
Why are carrots and cabbages harvested before they finish their biological life cycle?
bonus: When are they harvested?
for higher economic yield
bonus: before flowering; after one growing season
the life cycle of carrots and cabbages in cultivation
annual
Which of the following are succulent plants?
shrubs, herbs, trees, vines, liana
herbs and vines
True or False:
vines are succulent plants without self-supporting stems
true
True or False:
herbs are succulent plants with self-supporting stems
true
Modified True or False:
Shrubs are succulent plants without self-supporting stems
False
Possible answers:
vines are succulent plants without self-supporting stems
shrubs may have several main branches with no trunk and rarely grows higher than 5 meters
Modified True or False:
Shrubs rarely grows higher than 5 meters
True
plants with a single central stem to which branches are attached and are usually taller than a shrub
tree
True or False::
Shrubs have a trunk
False
What is a liana?
long-stemmed woody vines that are rooted in soil and use trees and other structures for vertical support
Crops are often characterized at what time of their developmental stage?
Bonus: Why?
reproductive maturity
Bonus: most crops are often herbaceous at germination and vegetative stages but are ultimately woody at maturity
grasses grown for their grains
cereals/grain crops
crops grown for pods and seeds
legumes
crops grown for enlarged or tuberous roots
root crops
crops grown for their fibers used in textile, cordage, twines, sacks, bags, etc.
fiber crops
What are oil crops?
bonus: give an example
crops grown for their oil content
bonus: soybean, peanut, sunflower, castor, coconut, lumbang (candlenut), safflower
examples of sugar crops
sugarcane, sugarbeet
crops grown to be used as roughage source for animals
pasture or forage crops
para grass, napier grass, and guinea grass are examples of ________
bonus: What classification is used?
grasses
bonus: based on use or purpose for which the crop is grown