Question

1. let us say you studied in plant genetics and you are hired by one of the seed companies in the US like DuPoint Pioneer Hybrid or Monsanto Seed Company as a corn breeder. Where will you go to find valuable genes that you need for your corn breeding program?

2. Farmers often consider grain yield per unit area of land to decide which crop to grow. If each grain you weighed is harvested from equal areas of land, which crop can be considered the most productive crop of the world per unit area ( out of barley, rice, corn, wheat, sorghum)?

3. The process by which the pollen sperm and nuclei and the egg unite are called:

4. By what process is pollen produced?

5. By what process is the egg produced? WHere on the cones are the seed produced?

6. what is the major environmental challenge to the conifers?

7. Angiosperms often produce flowers that are colorful and showy. other angiosperms produce flowers with these characteristics. Certainly plants spend energy in producing the colors and the fragments. State why the angiosperms produce flowers with these characteristics.

Answer 1

3. Syngamy or fertilisation

4.microsporogenesis

5 .Megasporogenesis.Seeds are produced at the bottom of the cone.

7 plants spend energy in producing the colors and fragments so that they can attract insects and other animals which further helps in POLLINATION.(i.e transfer of pollen grains from anther to stigma of flowers) Animals get reward in the form of nectar etc.