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
Eggs of _________ and _______ have hard covering around them made of calcareous shell.
Fishes and amphibians
Birds and mammals
Fishes and fertiles
Reptiles and birds
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
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
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
The hormone which maintains pregnancy
Estrogen
Progesterone
Testosterone
Prolactin
