Which one of the following plant parts is correctly matched with one of its stated characteristic?

1. Mango seed → aleurone layer
2. Bean seed → endosperm
3. Maize grain → coleoptile
4. Wheat grain → exalbuminous

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.

Which of the following is the largest seed ?

1. Watermelon
2. Pumpkin
3. Double coconut
4. Mango

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

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