Floral Structure

Question 1

TYPES OF SYMMETRY

Answer 1

actinomorphic
zygomorphic
irregular

Question 2

Actinomorphic

Answer 2

Symmetrical or regular

A flower that can be divided into two equal parts by a central vertical section through more than one plane

Question 3

ZYGOMORPHIC

Answer 3

mono-symmetrical or bilaterally symmetrical

a flower that can be divided into two equal halves by a vertical section passing through one plane only

Question 4

IRREGULAR

Answer 4

Asymmetrical

a flower that can not be divided into equal parts by any vertical section passing through the centre

Question 5

COMPLETE FLOWER

Answer 5

Has all four whorls

Question 6

INCOMPLETE FLOWER

Answer 6

Does not have all four whorls

e.g. unisexual flower

Question 7

BISEXUAL FLOWER

Answer 7

Hermaprodite

has both androecium and gynocium whorls

Question 8

UNISEXUAL FLOWER

Answer 8

a flower having either androecium (male) or gynocium (female)

Question 9

CALYX

Answer 9

Sepals

Question 10

COROLLA

Answer 10

Petals

Question 11

ANDROCIUM

Answer 11

Male

Stamens

Question 12

GYNOCIUM

Answer 12

Females

Carpels

Question 13

CALYX Stuff

Answer 13

Sepaloid- the sepals are green/leaf like in appearance
Petaloid- one or more sepals are coloured/ petal like in appearance
Polysepalous- sepals free
Gameosepalous- sepals are fused

Question 14

COROLLA Stuff

Answer 14

Polypetalous- petals free

Gameopetalous- petals are fused

Question 15

(androecium) MONADELPHOUS

Answer 15

filaments are united but anthers are free

Question 16

(androecium) DIDELPHOUS

Answer 16

When the filaments are united into two bundles but anthers are free

Question 17

(androecium) POLYDELPHOUS

Answer 17

When the filaments are united into a number of bundles but the anthers are free

Question 18

(androecium) syngenesious

Answer 18

when the anthers are united together but the filaments are free

Question 19

(androecium) SYNANDROUS

Answer 19

When stamens are united throughout their whole length

Question 20

(androecium) EPIPETALOUS

Answer 20

When stamens are attached to the petals by their filaments

Question 21

(androecium) EPIPHYLLOUS

Answer 21

When the stamens are attached to the tepals by their filaments

Question 22

(androecium) GYNANDROUS

Answer 22

When the stamens are attached to the carpels entirely or by their anthers only

Question 23

(gynocium) SIMPLE

Answer 23

A gynocium made up of 1 carpel only

1 stigma 1 syle 1 ovary

Question 24

(gynoecium) COMPOUND

Answer 24

A gynoecium made up of 2 or more carpels.

Question 25

(gynoecium) APOCARPOUS

Answer 25

When carpels (2 or more) are free

Question 26

(gynoecium) SYNCARPOUS

Answer 26

When carpels are united

Question 27

(gynoecium) HYPOGYNOUS OVARY POS

Answer 27

a flower in which the ovary occupies the highest position on the thalamus, while the other floral members (stamens, petals and sepals) are arranged below the level of the ovary. Such an ovary is said to be superior, and the other floral members inferior

Question 28

(gynoecium) PERIGYNOUS

Answer 28

a flower in which the margins of the ovary grow upwards to form a cup-shaped structure, with the stamens, petals and sepals arranged around this rim. Even though the ovary occupies the central part of the thalamus, the other floral members are usually elevated above the level of the ovary. Such an ovary is said to be half-inferior

Question 29

(gynoecium) EPIGYNOUS

Answer 29

a flower in which the margins of the ovary grow further upwards completely enclosing the ovary with the other floral members arranged above the level of the ovary. Such an ovary is said to be inferior, and the other floral members superior