Alfred Ajibola
- Mon, 27th January, 2020 @ 12:25 PM
Topics in Agricultural Science
Types of agricultural practices Crop rotation explained Benefits of crop rotation Differences between subsistence and commercial farming Subsistence farming explained with its characteristics What is commercial farming? Types of commercial farming Characteristics of commercial farming Importance of forest: Forest reserves in Nigeria Wildlife reserves in Nigeria and its importance Prevention and Control of Crop Pests Economic Importance of Crop Pests Classification of Insect Pests and their Economic Importance Agricultural machines and their uses Causes of soil erosion Ways to prevent soil erosion Asexual Propagation in Plants, Types and Examples Differences between gymnosperms and angiosperms Scheme of Work, Agricultural Science, SS1, First Term Scheme of Work, Agricultural Science, SS1, Second Term Scheme of Work, Agricultural Science, SS1, Third TermAcademic Questions in Agricultural Science
All plants are crops.
A. True
B. False
In agriculture, macronutrients are essential nutrients required by plants. Which of the following is not a macronutrient?
A. Zinc
B. Sulphur
C. Calcium
D. Phosphorus
E. Potassium
F. Magnesium
Which of the following is false concerning micronutrients?
A. They are non-essential nutrients
B. They are required by plants in minute quantities
C. Iron is a micronutrient
D. Chlorine is a micronutrient
E. Copper is a micronutrient
F. Boron is a micronutrient
_____ is a term that describes the biological, chemical and cultural control tactics employed to make pest management economical, environmentally friendly and socially acceptable.
A. Integrated Pest Management
B. Integral Pest Management
C. International Pest Management
D. Inclusive Pest Management
E. Imbibed Pest Management
F. Inclusion Pest Management
Cordage is made from _____ crop.
A. Food
B. Fibre
C. Ornamental
D. Oil
E. Cash
F. Vegetables and Spice
_____ is defined as the solid and arable part of the earth where agricultural activities are be carried out.
A. Soil
B. Farmland
C. Agricultural land
D. Biosphere
E. Open land
F. Planting and grazing land
Gymnosperms and angiosperms are seed bearing plants under the division spermatophyta?
A. True
B. False
Which of the following is false concerning gymnosperms?
A. Cones are present
B. Sepals are present
C. Petals are absent
D. Only seeds are produced
E. Sporophyll form the cones
F. In seed formation, the ovules aren't present in the ovary
Gymnosperms and angiosperms are plants that produce seeds. Seed bearing plants are categorized as spermatophytes.
Gymnosperms are believed to have existed before the angiosperms. Presently, the angiosperms are more diversified and numerous in comparison to the gymnosperms.
Please read on plants versus crops here.
Gymnosperms and angiosperms are siphonogamous plants. This means that they both produce pollen grains.
Please read on agricultural terms and meanings here.
In this article, we will look at the reproductive differences between gymnosperms and angiosperms.
Please read on the anatomical and structural differences between gymnosperms and angiosperms here.
Below are the differences between gymnosperms and angiosperms:
Gymnosperms: Their reproductive structures are called cones.
Angiosperms: Flowers are the reproductive structures in angiosperms.
Please read on Sexual reproduction in plants here.
Gymnosperms: Cones are unisexual.
Angiosperms: Flowers are usually bisexual but a few can be unisexual.
Please read on Asexual propagation in plants here.
Gymnosperms: The cones produces microspores and megaspores.
Angiosperms: The anther of the flower produces the microspore while the megaspores are produced by the ovules in the ovary.
Gymnosperms: Pollination is generally by wind.
Angiosperms: Pollination requires different agents including, wind, water, insects and other animals.Pollination refers to the process involving the transfer of pollen grains from the sexual parts of a plant.
The goal of pollination is to bring about fertilization. (That is, union of pollen grain and ova or egg cell).
You can attempt Len Academy agric questions here.
Gymnosperms: The pollen grains will germinate on the micropyle of the ovules. This is termed direct pollination.
Angiosperms: The pollen grain germinates into the pollen tube on the stigma and the male gamete moves through this pollen tube; that is, 'indirect pollination'.
Gymnosperms: The fertilization process is not as complex as that of the angiosperms.
Angiosperms: The fertilization process is doubled. This means that two male gametes fuses with the embryo sac or female gametophyte.
Gymnosperms: The endosperm is haploid.
Angiosperms: The endosperm is triploid.
Note: It is the embryo that germinates when a seed is planted.
You can read on pest of agricultural importance and crops attacked here.
Gymnosperms: The ovule develop into naked seeds.
Angiosperms: The ovule develops into seeds enclosed in the fruit.
Gymnosperms: No fruits are present.
Angiosperms: The ovary becomes the fruit.
Kindly share this article via the links below:
Click here to read on Len Academy Smart School Software. Contact Len Academy for a standard website at an affordable price
Please click here to follow Len Academy on Google News.
Please like and follow our official facebook page here for great educational write-ups.
You can follow Len Academy on twitter here.Thank you.
Please Register here or Login here to contribute to this topic by commenting in the box below.
Amazing facts in Agricultural Science
Cows technically have one stomach, not four. However, a cow's stomach has four compartments. These are: rumen, reticulum, omasum and abomasum
Peanuts are legumes and not nuts
Although plants neither see nor hear, they can recognize their siblings and even give them preferential treatments
Squirrels do plant more trees (through their actions) than an average human in their lifetime. They often hide their acorns and nuts underground and forget about them
Cows have got the ability to walk up stairs, but not down stairs
A group of cows is called a team, drove or herd.
People just prefer to call them herd
NOTABLE POINTS IN Agricultural Science
Below are the classification of crops based on their uses:
Oil crops
Vegetable crops
Latex crops
Drug and Medicinal crops
Beverage crops
Fibre crops
Fruit crops
Root and Tubers
Legumes
Spices
Cereals
All crops are plants but not all plants are crops. Below are some instances:
Weeds are considered as plants, not crops.
Parasitic plants are not necessarily crops. Examples of parasitic plants include mistletoe, corpse flower and striga.
Carnivorous or insectivorous plants are not necessarily crops. Examples are sundew, venus flytrap and pitcher plant. The image below shows a carnivorous plant (venus flytrap).
Meanwhile, always understand that all crops are plants, and they are grown for food, money or something beneficial.
Below are some of the problems of agriculture in Nigeria:
Lack of mechanized farming
Poor government policies
High cost of fertilizers
Lack of education
Lack of storage facilities
Bad road network
Poor research facilities
Please read a detailed explanation on the problems of agriculture in Nigeria here.
Secateurs are agricultural tools.
Secateurs are also referred to as pruning shears or hand pruners.
It looks like a pair of scissors.
It’s used for trimming flowers and leaves.
It is also used for pruning the branches of shrubs.
An example of an agricultural tool is the hoe. It is shown below:
We have a variety of hoes.
They are generally used for tilling the soil.
They are used for making trenches in farmlands.
A hoe is utilized in harvesting crops like yam and cocoyam
They are also used for cutting weeds on farmlands.
Len Academy