Seeds sown very deep in the soil fail to germinate because they

1. cannot exert enough force to push the soil upward.
2. do not get enough sunlight.
3. get too much water.
4. do not get enough oxygen.

Fruit is a ripened :

1. Ovary
2. Embryo
3. Ovule
4. Zygote

The distinct whitish oval scar on the concave side of the seed is termed as :

1. Scutellum
2. Micropyle
3. Hilum
4. Germpore

The single cotyledon of a maize grain is called:

1. Hypocotyl
2. Scutellum
3. Coleorhiza
4. Embryo