Chapter 12

Question 1

Female reproductive organ of a plant

Answer 1

Carpel

Question 2

Male reproductive organ of a plant

Answer 2

Stamen

Question 3

Which organ receive pollen grain ?

Answer 3

Stigma

Question 4

Ginger

Answer 4

Rhizome

Question 5

Lotus

Answer 5

Rhizome

Question 6

Gladiolus

Answer 6

Corm

Question 7

Water chestnut

Answer 7

Corm

Question 8

Taro

Answer 8

Corm

Question 9

Onion

Answer 9

Bulb

Question 10

Tulip

Answer 10

Bulb

Question 11

Lily

Answer 11

Bulb

Question 12

Daffodil

Answer 12

Bulb

Question 13

Potato

Answer 13

Stem tuber

Question 14

After fertilization:
Ovum –>

Answer 14

embryo

Question 15

After fertilization:
Ovule –>

Answer 15

seed

Question 16

After fertilization:
Ovary Wall –>

Answer 16

fruit wall

Question 17

After fertilization:
integuments (outercovering of the ovule) –>

Answer 17

seed coat

Question 18

After fertilization:
Remains of stigma and style –>

Answer 18

scar

Question 19

After fertilization:
Sepal, petal, stamen

Answer 19

fall off during winter

Question 20

Difference of stigma between insect-pollinated and wind-pollinated flower:

Answer 20

*Located inside/ outside the flower
*Broad, long, and sticky stigma help to pick up the large and heavy pollen grains from the insects.

While for the wind-pollinated flower, long and feathery stigma hangs outside the flower and catch small pollen grains in the air.

Question 21

Adaptive feature of a wind-pollinated flower to help the release of pollen grains
(i.e. apart from anthers hanging outside and loosely attached to the flower)

Answer 21

The THIN AND FLEXIBLE filaments allow the movement of the anthers in the wind to help releasing the pollen grains.

Question 22

Adaptive feature of the stigma in a wind-pollinated flower.

Answer 22

FEATHERY stigmas hang outside the flower to catch pollen grains in the air.

Question 23

After fertilization:
Ovary –>

Answer 23

Fruit Wall