Q 1. Use the dichotomous keys and circle one letter (A-D) that identifies the
animal in the image below.
A)
B)
Q 2. Molluscs are soft-bodied animals, often with hard shells for
protection.
Use the key to identify each species. Write the letter of each species ( AE) in the correct box beside the key.
Q 3. Fish are the vertebrates with gills and fins living in water.
Using the key given on the left hand side, write the names of the fish in the
table on the right hand side:
S.
No.
1.
2.
3.
4.
5.
6.
7.
8.
9.
Name of the fish
Q 4. Use set A (Insects) or set B (Fruits) to draw a branched classification model.
Convert the classification model into a dichotomous key by asking yes or no
questions for each category on the model.
BUTTERFLY
GRASSHOPPER
DUNG BEETLE
MOSQUITO
RHINO BEETLE
HOUSE FLY
HONEY BEE
MOTH
PEACH
MANGO
BANANA
DRAGON FRUIT
MELON
POMOGRENATE
BLUEBERRY
GUAVA