Topics in Agricultural ScienceImportance 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 Soil Erosion: 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 Term Len Academy Agric Science exam questions, JSS1, First Term Len Academy Agric Science exam questions, JSS1, First Term, part 2 Definitions and Meanings of Agricutural terms (P - Q) Agricultural Terms: Definition and Meanings of Agricultural Terms (P and Q), part 2 Len Academy questions for Agric Science JSS1, 2nd Term Len Academy questions for Agric Science JSS1, 2nd Term, Part 2 Roles of Government in Agriculture
Academic Questions in Agricultural Science
Cordage is made from _____ crop.
F. Vegetables and Spice
_____ is defined as the solid and arable part of the earth where agricultural activities are be carried out.
C. Agricultural land
E. Open land
F. Planting and grazing land
Gymnosperms and angiosperms are seed bearing plants under the division spermatophyta?
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
Which of the following statement is incorrect concerning seeds?
A. The ovary develops into the seed after fertilization
B. The embryo in the seed develops into a young plant
C. The seed's endosperm serve as a source of food reserve for the developing embryo
D. A seed has its own genotype
E. Seeds are products of sexual reproduction
F. Apomictic seeds aren't produced sexually and the hawkseed is an example
The _____ is the reproductive organ in plant's sexual reproduction.
A. Pollen grain
In flowering plants, fertilization occurs when the _____ comes into contact with the ova (as genetic materials are eventually exchanged).
F. Pollen grain
The fusion of sperm and ova in animals leads to the formation of _____.
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As students and teachers, understanding the various agricultural terms and their meanings is quite important towards gaining a better knowledge on this subject.
In this article, we will look at the meanings of Agricultural Terms for Letters I through O.
This is the process of keeping eggs under controlled conditions of temperature and moisture in order to make them hatch.
Note: It takes turkeys 28 days and chicks 21 days to hatch.
IPM involves the use of biological, chemical, and cultural control tactics to make pest management economical, environmentally friendly, and socially acceptable.
Note: The goal is to minimize the excessive use of chemicals in controlling pest on agricultural land.
This a a process of ensuring control on all or some of the various stages of production within a specific organization.
This is the identification and maintenance of seed with specific traits or characteristics because of their competitive advantage.
This is the duration of time a female animal gives milk to its offspring.
Note: This term is usually associated to dairy cows and milk goats.
This is a female chicken that produces eggs regularly.
Note: A layer should produce at least 19 dozens of eggs in a year.
This is a process of removal or loss of soluble soil materials or nutrients by the passage of water through soil.
Note: The dissolved soil nutrients are completely lost in leaching.
This is a type of plant that has nodules formed by bacteria on its roots. The bacteria that produce these nodules take nitrogen from the air and pass it on into the plant for the plant to use.
Note: Leguminous plants are important in crop rotation. Examples are beans, soybeans and sweet clover.
The offspring born at the same time by one sow. (The offspring are more than one).
Note: A sow is an adult female pig.
This is any animal domesticated for meat or money or other market purposes.
Examples of Livestock include beef and dairy cattle, sheep, goats and chickens.
These are essential nutrients or elements needed by plants in relatively large amount. They include:
They are generally animal excreta and straw. They also include refuse from stables.
This is an adult/mature female horse.
This is a land that is unproductive for farming.
This is a disease of the cow’s udder as a result of infections from pathogens. This infection may result from improper milking procedures.
A micronutrient is considered to be an essential or important nutrient (elements) that is needed by plants in minute or small quantities. The micronutrients are:
The average composition of milk is:
Note: Lactose is a disaccharide comprising of two simple sugar molecules which are glucose and galactose.
These are soil worms that are not segmented and are also very small in size.
Sometimes, nematodes attack the root of plants causing damage to it.
This is the oxidation (breaking down in the presence of oxygen) of ammonia (NH3) or ammonium (NH4+) into nitrites and the the subsequent oxidation of nitrites into nitrates.
These are chemical compounds added to nitrogen fertilizer in order to reduce the rate of conversion of ammonium form of fertilizer to a nitrate form.
This is the cyclic movement or transformations of nitrogen from the atmosphere into the soil where it is used by plants and other nitrifying organisms until it is eventually returned back to the atmosphere.
Note: Leguminous plants are very useful in fixing nitrogen back into the soils. This is why they are a great choice in the crop rotation planting system.
This is the process through which atmospheric nitrogen is combined with other elements to form inorganic compounds which can then be converted (by a process called nitrification) into nutrients that can easily be absorbed by plants, to be utilize for their normal functioning including photosynthesis.
Note: Rhizobium, a bacteria found in the root nodules of leguminous plants brings about this nitrification.
They are small bodies or structures found on the surface of a plant's root and they usually contain Rhizobium.
Rhizobium is a bacteria found in the root nodules of leguminous plants, for example soya bean.
These are chemical compound that are generally used to kill plants.
Note: Some selective herbicides may become non-selective if used at very high rates.
This is a chemical material, element or compound that is needed or essential for the normal body metabolism, growth, reproduction and other basic characteristics of life.
Nitrients are present in the six classes of food. They are:
They are the progeny of parents.
Note: Progeny is another word for offspring.
These are living organisms that feed on flesh, animals and plant origin feeds.
Humans are examples of omnivores.
This is a fertilizer containing plant nutrients in combination with carbon.
Note: An organic material will always have carbon in its composition.
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Alfred Ajibola is a Medical Biochemist, a passionate Academician with over 7 years of experience, a Versatile Writer, a Web Developer, a Cisco Certified Network Associate and a Cisco CyberOps Associate.
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Amazing facts in Agricultural Science
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 some common types of erosion:
Water Erosion: It is caused by rainfall and flooding on the topsoil. As a result of water erosion, some layers of the topsoil are lost.
Sheet Erosion: When an entire surface of land becomes eroded at a uniform (equal) level, such is referred to as sheet erosion. It is shown below:
Wind Erosion: It results from the actions of wind on a bare land. Wind erosion is often seen in deserts. Overgrazing and lack of vegetation cover will also enhance wind erosion on topsoil.
Soil erosion is defined as a process through which the topsoil is removed or moved from one point to another by agents like wind, water, man and animals.
Soil erosion occurs naturally (wind and water) and may also be facilitated by living organisms.
Soil erosion is more likely to occur on a sloppy land and land with no vegetation cover. When this occurs, the nutrient rich layer of the topsoil is washed away; and this ultimately results in fewer plants growing on such eroded soil.
There are about 630 different kinds of carnivorous plants.
Carnivorous plants are plants that derive some or most of their nutrients by consuming small animals, especially insects.
Carnivorous plants are also referred to as insectivorous plants.
Examples of carnivorous plants include sundew and Venus flytrap.