Plant Reproduction Flashcards
What is a petals function
Brightly coloured to attract insects
What is the function of a anther
To produce pollen which is a male gamete
What is the function of a filament
To hold up an anther
What is the function of a Sepal
To protect the unopened flower
What is the function of a Stigma
To collect pollen
What is the function of a Nectary
Contains Nectar which attracts insects
What is the function of a ovary
To produce ova which is a female gamete
What is another word for carpel
Pistil
Order the steps in plants Reproduction
Gamete formation Pollination Fertilisation Seed and fruit formation Seed dispersal Germination
Insect pollinated features
Brightly coloured petals
Scented flowers with nectaries
Sticky stigma to take the pollen off the insects as it goes from plant to plant in the nectaries
Small amount of pollen made
Wind pollinated features
Usually small dull petals on the flower
No scent or nectaries
Long filaments hang the anthers outside the flower so a lot of pollen is blown away
Stigmas are feathery to catch pollen as its carried past in the wind
Factors of seed dispersal
- How heavy the seed is
- The structure of the seed
- How high the seed is released from
- The weather on that day
What does a seed need
Warmth
Water
Oxygen
