Biology/plants and reproduction Flashcards
5 largest animal groups
-animal kindgdom
-plant kingdom
- fungi kingdom
-protoctist kingdom
-prokaryotes
characteristics of animal kingdom
no cell wall, multicellular, feed on other organsims
characteristics of plant kingdom
no cell wall, make their own food, multicellular
characteristics of fungi
cell walls contain chitin, mostly multicellular, live on dead organisms
characteristics of protoctists
mostly unicellular
characteristics of prokaryotes
cell has no nucleus, unicellular
what 2 things do we give organisms a name with
genus and species
definition of sexual reproduction
2 organism breed and produce new organisms
definition of asexual
occurs when one parent or organism breeds
members of 2 different breeds cannot producs but when they do what are they called?
hybrids, hybrids cannot reproducs they are infertile
another word of sex cells
gametes
when a male gamete and female gamete join together what does it form?
egg cell
sexual reproduction produce offspring that…
do not look identical to the parents
asexual reproduction produce offspring that…
look identical to the parent
definition of cross pollination
the process of aplying pollen from one flower to another
definition of genetic mutation
change in one of more genes
definition of sterile
when hybrids cannot mate/breed
where do pollen grains ripen
inside the anther
after pollen grains get carried by an insect where do the get carried?
stigma of another female flower
plants that use animals for pollination have what?
brightly colored petals, they attract bees by color, scent and nectar
what characteristic does a stigma have
sticky to collect pollen from insects
Characteristic of a sepal
protect the flower when its in a bud
explain how a pollen tube is formed
when pollen rached the stigma of the same species the flower grows a pollen tube.
explain how a zygote or fertilised egg cell formed?
female gamete and the male gamete join together