Back to: Agricultural Science Primary 3
Welcome to class.
BASED ON LIFE SPAN/LIFE CYCLE
Life span is the length of time from planting of a seed through its germination, maturity, flowering, and seed production to its death.
Crops may be grouped on the basis of their life cycle into the following
- Annual crops
- Biennials crops
- Perennials crops
Annual Crops
These are crops which start and complete their life cycle within one year or one growing season.
Example of annual crops are maize, rice, pkra, millet, guinea corn, cowpea, wheat, groundnut, cotton etc.
Biennial Crops
Biennial crops are crop plants which require two seasons or years to complete their growth.
Examples are carrot, cabbage, pineapple, bulb, cocoyam, cassava, ginger etc
Perennial Crops
These are crops which require more than two years to develop into mature plants. They bear fruit every year, sometimes twice in a year. They are sometimes referred to as permanent crops.
Examples of perennial crops are mango, cashew, citrus, cocoa, oip palm, rubber, kolanut, mango, coconut, banana etc
evaluation
- ———- can be referred to as the length of time it takes a plant to grow to maturity. a). Life span. b) life style. c) life duration
- The crops which complete their life span in one year are called ——– crops. a) annual b) perennial c) biennial.
- Perennial crops complete their life span in ———– years. a) one. b) two. c) three or more.
- Give four examples of Biennial crops.
- Give four examples of annual crops
we have come to the end of the class. If you have any questions ask using the comment box. Thank you for your time.
Get more class notes, videos, homework help, exam practice on Android [DOWNLOAD]Get more class notes, videos, homework help, exam practice on iPhone [DOWNLOAD]