reproduction in plants

Question 1

what is the characteristics of asexual reproduction

Answer 1

production of genetically identical offspring from one parent
do not involve fusion of gametes
relatively quicker method

Question 2

what is the characteristics of sexual reproduction

Answer 2

production of genetically offspring from two parent
requires the fusion of the nucleus of male gametes with nucleus of female gametes to form zygote
genetically dissimilar
relatively slower method

Question 3

what is bisexual plant

Answer 3

consist of both male and female parts

Question 4

what is uni-sexual plant

Answer 4

consist of either male or female parts only

Question 5

male gamete is found within the…

Answer 5

pollen grain

Question 6

female gamete is found within the…

Answer 6

ovule

Question 7

what are the female parts of the plant called

Answer 7

carpel

Question 8

what are the male parts of the plant called

Answer 8

stamen

Question 9

carpel consists of…

Answer 9

stigma
style
ovary

Question 10

stamen consists of…

Answer 10

anther

filament

Question 11

what is the function of stigma

Answer 11

to receive pollen grains

Question 12

what is the function of style

Answer 12

holds stigma upright and connect to the ovary

Question 13

what is the function of ovary

Answer 13

produce and protects ovules

Question 14

ovule contain…

Answer 14

an ovum (female gamete)

Question 15

what is the function of anther

Answer 15

produce pollen grains (male gamete)

Question 16

what is the function of filament

Answer 16

holds anther to disperse pollen grains

Question 17

what is the function of petals

Answer 17

it is a landing platform for insects

Question 18

what is the function of receptacle

Answer 18

holds the different part of the plant together

Question 19

what is the function of sepal

Answer 19

protects and encloses flowers during bud stage

it is usually green in colour

Question 20

define pollination

Answer 20

it is the transfer of pollen grains from anther to stigma

Question 21

what is self pollination

Answer 21

transfer of pollen grains from anther to stigma to the
same flower and
different flowers of the same plant

Question 22

what is cross pollination

Answer 22

transfer of pollen grains from anther to stigma to

another plant of the same species

Question 23

which pollination between cross and self depends on wind/ insect pollination

Answer 23

cross pollination

Question 24

characteristics of insect pollination

Answer 24

large and brightly coloured petals
fragent smell
pollen grain is large with rough surface

Question 25

characteristics of wind pollination

Answer 25

small and dull coloured petals large, feathery and protruding stigmas odourless smell pollen grain is small and light with smooth surface

Question 26

explain the process of fertilisation of plants

Answer 26

during pollination, pollen grain is transferred to the stigma each pollen grain contain 2 sex cells the pollen grain secretes in the stigma, growth of pollen tube it then carries the 2 male gamete through the style enters the ovule through an opening called micropyle thus, 1 male gamete enters the ovule fusion occurs = fertilisation

Question 27

give two difference between asexual reproduction and sexual reproduction

Answer 27

``` asexual reproduction: only one parent required offspring are genetically identical relatively quicker method sexual reproduction: two parents required offspring are genetically dissimilar relatively slower method ```

Question 28

how does a pollen tube grow

Answer 28

a pollen tube grows from each pollen grain enzymes are secreted by the pollen tube it grows down the style into the ovary and enters the ovule through an opening called the micropyle

Question 29

what is the opening of pollen tube called

Answer 29

micropyle