CHARACTERISTICS AND CLASSIFICATION OF LIVING ORGANISMS 2

Question 1

What are the 4 characteristics of insects?

Answer 1

1) The body is divided into 3 segments
* head
* thorax
* abdomen
2) 3 PAIRS of jointed legs (total: 6)
3) 1 PAIR of antennae (total: 2)
4) 2 PAIRS of wings (total: 4)

Question 2

What are the 2 characteristics of arachnids?

Answer 2

1) The body is divided into 2 segments
* cephalothorax
* abdomen
2) 4 PAIRS of jointed legs (total: 8)

Question 3

What are the 3 characteristics of crustaceans?

Answer 3

1) The body is divided into 2 segments
* cephalothorax
* abdomen
2) PAIRS of jointed legs ≥ 5 (total ≥ 10)
3) 2 PAIRS of antennae (total: 4)

Question 4

What are the 3 characteristics of myriapods?

Answer 4

1) The body is divided into 2 main segments
* head
* body (not obviously divided into the following)
‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎‎ㅤ* thorax
‎‎‎‎‎‎‎‎ㅤ* abdomen
2) PAIRS of jointed legs ≥ 10 (total ≥ 20)
3)1 PAIR of antennae (total: 2)

Question 5

What are the 3 (4) phyla of the plant kingdom that we need to know?

Answer 5

angiosperms (flowering)
cryptogams (non-flowering and no seeds)
gymnosperms or conifers (non-flowering, with seeds)