Animal reproduction

Mammals

1.How do most mammals reproduce?
a) Laying eggs externally
b) Internal fertilization followed by live birth
c) External fertilization in water
d) Asexual budding

2.Which mammal is an exception that lays eggs instead of giving birth to live young?
a) Kangaroo
b) Dolphin
c) Platypus
d) Elephant

3.What structure in female mammals nourishes the developing embryo?
a) Cloaca
b) Uterus
c) Oviduct
d) Gills

Birds

4.How do birds typically reproduce?
a) Live birth after internal fertilization
b) Laying eggs after internal fertilization
c) External fertilization in nests
d) Cloning through division

5.What is the purpose of a bird’s incubation behavior?
a) To cool the eggs
b) To keep eggs warm for embryo development
c) To protect eggs from rain
d) To hide eggs from mates

6.Which bird feature aids in transferring sperm during reproduction?
a) Beak
b) Cloaca
c) Wings
d) Feathers

Reptiles

7.How do most reptiles reproduce?
a) Live birth exclusively
b) Laying eggs with internal fertilization
c) External fertilization in water
d) Budding from the parent

8.Which reptile group commonly gives birth to live young instead of laying eggs?
a) Turtles
b) Crocodiles
c) Some snakes (e.g., boas)
d) Lizards (all species)

9.What protects reptile eggs from drying out on land?
a) A jelly-like coating
b) A leathery or hard shell
c) Parental saliva
d) Water submersion

Amphibians

10.How do most amphibians reproduce?
a) Internal fertilization and live birth
b) External fertilization in water with eggs
c) Laying eggs on land
d) Asexual reproduction

11.What is a key characteristic of amphibian eggs?
a) They have hard shells
b) They are laid in dry environments
c) They lack shells and need moisture
d) They hatch into adults directly

12.Which amphibian behavior ensures egg fertilization in water?
a) Amplexus (male clasping female)
b) Nest building
c) Egg guarding
d) Internal mating

Fish

13.How do most fish reproduce?
a) Internal fertilization and live birth
b) External fertilization with eggs in water
c) Laying eggs on land
d) Budding from the body

14.Which fish are known for giving birth to live young instead of laying eggs?
a) Goldfish
b) Sharks (some species, e.g., hammerheads)
c) Salmon
d) Trout

15.What is the purpose of spawning in fish?
a) To build nests for young
b) To release eggs and sperm into the water
c) To migrate to feeding grounds
d) To attract predators away

Answers
1.b

2.c

3.b

4.b

5.b

6.b

7.b

8.c

9.b

10.b

11.c

12.a

13.b

14.b

15.b

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