J S S 1 

AGRIC SCIENCE

Instructions

1. Copy the note in your Agric science note book.

2. Submit your project report online

3. Bring the two crops you planted to School.

*CROPS PLANT FORMS*

A crop is any plant that has useful purpose or economic value. Crop plants are grouped into two forms based on the structure of their seeds or the number of seed leaf it contains. Seed leaf is otherwise known as cotyledon. Food for germinating seed is stored in the cotyledon. The two crop plant forms are monocotyledons and dicotyledons.

*Monocotyledons*

Monacotyledons are plants which have seeds with one seed leaf or cotyledon: i.e. their seeds possess one seed leaf Examples of monocotyledons are banana, plantain, oil palm, garlic, maize, millet, sorghum, rye, wheat, barley, pineapple, date-palm, coconut, rice. sugar cane and oats

 *Dicotyledons*

Dicotyledons are plants which have seeds with two seed leaves or cotyledons. Examples of dicotyledonous plants are cowpea, kola, melon, pepper, groundnut, cocoa, cashew orange, mango, soybeans, okra, tomato, etc.

*Project number 2* ( submit your reports online) 

1. Take two small cups or any available container, label A and B.

2. Fill each with garden soil.

3. Plant four maize seeds in A and four bean seeds in B.

4. Place the two containers in a well lit area. 

5. Observe for a week and water slightly every other day.

6. Note the date of germination and how they germinate.

7. A week after germination, uproot a seedling from each container and examine roots and the leaves.

8. In a tabular form, state four differences in the external features between the two seedlings.

9. State which of them is a monocot and which is a dicot. Give two reasons for your answers.

Essay Questions (answer  in your note book) 

1. What is monocotyledon?

2 State four characteristics of dicotyledons

3. What is cotyledon? Of what importance is cotyledon to a germinating seed? 4. Give one function each of: (1) the stem and (ii) the root.

5. List two external features of crop plant forms.