Pollination

Question 1

autogamy

Answer 1

within the same flower.

Question 2

conditions required for autogamy

Answer 2

-closed flowers(cleistogamous flowers)
- synchrony in pollen release and stigma receptivity

Question 3

chasmogamous flowers and examples

Answer 3

exposed anther and stigma. sunflower, cotton and rose

Question 4

cleistogamous flowers and examples

Answer 4

does not open at all. pisum, groundnut

Question 5

Both cleistogamous and chasmogamous flowers are present in

Answer 5

commelina

Question 6

Disadvantage of cleistogamous flowers

Answer 6

No variation for evolution

Question 7

Geitonogamy

Answer 7

between two flowers of the same plant. genetically similar to autogamy

Question 8

Xenogamy

Answer 8

between two different plants. produces variations.

Question 9

abiotic agents

Answer 9

wind and water

Question 10

biotic agents

Answer 10

animals

Question 11

conditions necessary for wind as a pollinating agent

Answer 11

non sticky pollen, well exposed stamen and large feathery stigma.

Question 12

which plant uses water as an agent

Answer 12

monocots

Question 13

which aquatic plant uses insects

Answer 13

waterlily

Question 14

dominant pollinating agent

Answer 14

bees

Question 15

entomophily

Answer 15

pollination by insects

Question 16

Which of the following species provides floral rewards in the form of providing safe place to lay eggs ?

Answer 16

Amorphophallus, fig and yucca.

Question 17

where does moth deposit their eggs to yucca

Answer 17

locule of the ovary

Question 18

who are pollen robbers with examples

Answer 18

consumes pollen without bringing about pollination. example- bumble bees, ants and carpenter bees

Question 19

Inbreeding depression

Answer 19

continued self pollination

Question 20

preventions to discourage self pollination

Answer 20

-decrease synchrony for pollen release and stigma receptivity.
-placement for anther and stigma so they cannot come in contact.
-inhibit pollen germination
-production of unisexual flowers.

Question 21

Pollen-pistil interaction

Answer 21

Pollen recognition + promotion or inhibition of the pollen

Question 22

what is artificial hybridisation

Answer 22

desired pollen grain + stigma

Question 23

methods of artificial hybridisation

Answer 23

emasculation and bagging technqiues

Question 24

Emasculation

Answer 24

removal of anthers using forceps before dehiscence.

Question 25

Bagging techniques

Answer 25

Stigma is covered by butter paper to prevent contamination with unwanted pollen.

Question 26

is bagging done before or after the flower is open

Answer 26

before the flower opens