What happens if progesterone level falls sharply during pregnancy.
Ovulation takes place
Miscarriage occurs
Pregnancy continues
Menstruation occurs
Which is not true for a human sperm
Motile gamete
Micro gamete
Live for 2-3 days inside the female body cavity
Stores its own food
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
The gestation period in human beings.
30 weeks
35 weeks
40 weeks
45 weeks
What is true about voice in adoloscent boys and girls.
High pitched voice in girls and low pitched in boys
Low pitched voice in girls and high poitched in boys
Both boys and girls have same pitch in their voice
The pitch of the voice does not change during adolescence but changes with individuals
Which is not a feature of amniocentesis
Help to find out genetical disorder of foetus
Help to find out sex of the feotus
Help to find out genetical congenital disorders like absence of limbs, heart etc
Helps to add changes in the foetus
Match the following
a. Formation of sperms 1. Oviduct b. Fertilization of eggs 2. Ovary c. Implantation of zygote 3. Testes d. Formation of eggs 4. Uterus
A-3, B-4, C-1, D-2
A-3, B-1, C-2, D-4
A-3, B-4, C-2, D-1
A-3, B-1, C-4, D-2
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
The onset of puberty is controlled by
Hormones
Gametes
Brain
Enzymes