The fusion of male and female gamete produces the.
baby
foetus
embryo
zygote
What happens if progesterone level falls sharply during pregnancy.
Ovulation takes place
Miscarriage occurs
Pregnancy continues
Menstruation occurs
When egg and sperm is fertilized in lab outside the body of the mother, such a fertilization is called.
External fertilisation
In vitro fertilisation
Ex situ fertilisation
In situ fertilisation
The onset of puberty is controlled by
Hormones
Gametes
Brain
Enzymes
Eggs of _________ and _______ have hard covering around them made of calcareous shell.
Fishes and amphibians
Birds and mammals
Fishes and fertiles
Reptiles and birds
Hormones reach necessary parts of the body through.
Tubes which carry hormone alone
Nerves which carry hormone alone
Blood which carry other substances also
Bones
Match the following.
1. Pouched mammals - A- Whale & Bear2. Placental mammals - B- Echidna and platypus3. Egg laying mammals - C- Tasmanian wolf and Kangaroo
1-C, 2-A, 3-B
1-C, 2- B, 2, 3- A
1- A, 2-B, 3 - C
1- B, 2- C, 3- A
Features of asexual reproduction are
Uniparental, gametes are formed, fertilization absent
Uniparental, gametes not formed, fertilization occurs
Biparental, gametes formed, fertilization absent
Uniparental, gametes not formed, fertilisation absent
