Why is DNA barcoding important in classifying organisms?

Question

1.Why is DNA barcoding important in classifying organisms?

a.

It helps identify the morphological structures of organisms

b.

It makes the identification of an organism faster and easier

c.

It provides a specific code for a certain organism which cannot be duplicated

d.

both A and C

2.Why did the scientists further classified the discovered organisms into 6 kingdoms instead of the original 2 – Plantae and Animalia?

a.

The discovered organisms exhibit different traits from that of plants and animals

b.

The organisms have different structures from that of plants and animals

c.

There are too many organisms to be grouped under plants and animals

d.

To lessen the grouped organisms under plants and animals

3.Which of the following statements about taxonomic levels is CORRECT?

a.

Species is the largest category

b.

Kingdom is the smallest category

c.

Class is larger than phylum

d.

Order is larger than family

Answer 1

1) B, because barcoding is used for identifying an organism to a type species, hence there could be "similar" barcodes if they're sampled from the same species

2) A or B. This one is tricky because both A and B could refer to the same thing. The gist is that organisms like bacteria were too different from animals and plants to be included under the same kingdom, so they had to expand the system to include more kingdoms

3) D