pollination🥂💦💃🏽

Question 1

autogamy
is rather rare
continuallly results in inbred depression

Answer 1

pollen g transfered from same flower

Question 2

geitnogamy

Answer 2

two flowers of same plant

Question 3

xeogamy

Answer 3

to a diff palnt

real / true

Question 4

monocieois plant
male femae flowers on same plant are unisex
prevents autogamy not geitnogamy

Answer 4

eg- castor
cucurbitis
coconut
maize

Question 5

`dioecious plants

male female on diff plant are unisex
prvents both autogamy and geitnogamy

Answer 5

eg- papaya

date palm

Question 6

CONTRIVANCES/ ADAPTATIONS FOR SELF POLL.

Answer 6

monocliny= bixexuality
homocliny
cleisogamy
bud germination

Question 7

CONTRIVANCES/ ADAPTATIONS FOR cross poll.

Answer 7

dicliny
dichogamy-  protoandry, protogamy
chasmogamy
heterostyly
self sterrility / self incompability

Question 8

monocliny- bisex

Answer 8

hrmaphrodite

eg- pea

Question 9

homogamy

Answer 9

synchrony in pollen and stigma receptivvity
increases chances for self pollination
eg- pea

Question 10

cleistogamy
in such flowers stigma and anther lie close to each other
they are invariably autogamous, as theres no chance of cross pollen landing

Answer 10

they never open thru their life
produce assured seed set even in absence of pollinators
eg- viola[ commmon pansy ] , oxalis , commenlina

Question 11

chasmogamous flowers

Answer 11

exposed anters and stigma

Question 12

dicliny- unisex

Answer 12

a device to prevent self pollination is to have unisex flowers

eg- date palm, papaya

Question 13

dichogamy- stigma and anther do not mature at the same time

Answer 13

pollen release and stigam receptivity arent sync

• protoandry= salvia , sunfloweer
• protogamy= ficus sps [ banyan, peepeal, fig ]

Question 14

chasmogamy

Answer 14

exposed anthers and stigam

Question 15

heterostyly

Answer 15

anther and stigma are placed in different positions so that the pollen can not come in contact with stigma flower

Question 16

self sterility / self incompatibily

Answer 16

this is a genetic mech., prevents self pollination, by inhibiting pollen germination or pollen tube growth in pistil

Question 17

anemophily- wind

Answer 17

enormous pollen grain

small, light weight , dry

sigma is often hairy/ feathery to rap pollen g easily and
mucilaginous

well exposed stamen

neither fragrant or attractive

do not have necter g

Question 18

anemophly-

max loss of pollen g in this, completely non directional

more common among pollinators

wind pis common in grasses

Answer 18

wind pollinate flowers often have - single ovule in each ovary n numerous flowers are packed into an inflorescence
eg- corn cob

tassels is styles and stigmas which wave in the wind to trap pollen g
eg- gymnosperms, maize [ corn ] , sugarcame , bamboo , cannabis , grasses , date palms , papaya

Question 19

HYDROPHILY-
not all aquatic plants use water for pollination.

it is quite rare in flowering pants in only 30 generas mostly monocots

in most water pollinated species the pollen g is protected from wetinfg by mucilaginoius covering

Answer 19

two types- epihydrophily

• eg: valliseneria is dioecious [ unisex ] and flowers are unisex
• pedical [stalk] of female are long and coiled eventually they reach the water
• the male flowers are released on the surface od f water surface to bursting in inflorescence of male
• passively carried by water to female stigma

2. hypohydrophily
   -eg-: hydrilla sea grass[ sea grasses]
   -in zostera female reamin submerged in water
   - and the long riibbon like pollen g are relesed in water and some resch stigma
   -F.W= valliseneria, hydrilla
   -marine- zostera
   -