Course Content
Biology Form 3
About Lesson

Other Terms Used in Describing a Flower

1. Complete flower; one with all four floral parts present (calyx, corolla, androecium and gynoecium).

Incomplete flower; one with one or more floral parts absent.

2. Unisexual flower; one with only one of the reproductive parts.

It may either be a male or female flower.

(a) Staminate flower: a male flower.

(b) Pistillate flower: a female flower.

3. Monoecious plant: plant with both male and female flowers e.g. maize, oil palm.

Dioecious plant: plant with either male or female flowers.

The plants are either male or female plants.

4. Hermaphrodite (bisexual) flower: has both the male and female reproductive organs.

5. Non-essential parts of a flower: the calyx and corolla.

Essential parts of flower: the androecium and gynoecium.

6. Regular (actinomorphic) flower: those that can divided into similar halves by any plane. Hence are said to be radially symmetrical.

Irregular (zygomorphic) flower: can be divided into two equal halves in one particular plane only.

8. Pedicillate flower: flower a stalk.

9. Solitary flower: flower that occur singly.

10. Inflorescence: flowers that grow in clusters.


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