Sexual reproduction Flashcards
Name the outermost whorl of the flower.
Sepal - protects the rest of the flower.
Name the whorl that secretes nectar.
Petals
Name the male whorl.
Stamen - made of anther and filament and contains pollen.
Name the inner female whorl.
Pistil - made of ovary, style and stigma
Distinguish between bisexual and unisexual flowers
Bi - contain male and female structures
Uni - Contain either male or female structures
Name the four dispersal mechanisms of seeds
Wind
Water
Self-dispersal (dry up and burst out)
Humans and animals
Why are sees often not dispersed far from the parent plant?
It increases the chance of survival
Define puberty
The stage of human development when the body changes from a child to an adult.
What is the purpose of puberty
Allows the person to reproduce
What are hormones?
Chemicals that regulate activity of cells or organs
What is menstration?
Monthly bleeding from the vagina caused by the shedding of the lining of the uterus.
Name the key body changes experienced by a male during puberty
facial hair deeper voice muscle growth hair on underarms and body penis enlarges and pubic hair
Name the key body changes experienced by a female during puberty
underarm hair breast enlargement wider hips ovulation and menstration start pubic hair grows
Where are the egg cells stored in a female’s body?
In her ovaries
What is ovulation?
The release of egg/s (ovum) every 28 days
