Chapter 10. 10·4–10·7 Species are the basic units of biodiversity.

Show What You Know - Self Quiz

true

You must read each slide, and complete any questions on the slide, in sequence.

Instructions

Check your understanding of concepts from 10·4–10·7 Species are the basic units of biodiversity by answering the following questions.

1.

1. Which species concept is based on the degree of reproductive isolation between populations of species?

biological species concept

phylogenetic species concept

ecological species concept

morphological species concept

recognition species concept

Correct. (See section 10·4 What is a species?)

Incorrect. (See section 10·4 What is a species?)

2.

2. In animals, it is believed that the most common mode of speciation is:

chromosomal.

autopolyploidy.

directional.

sympatric.

allopatric.

Correct. (See section 10·7 How do new species arise?)

Incorrect. (See section 10·7 How do new species arise?)

3.

3. Which of the following is NOT a difficulty with the biological species concept?

inbreeding species

hybridizing species

asexual species

ring species

fossil species

Correct. (See section 10·6 Species are not always easily defined.)

Incorrect. (See section 10·6 Species are not always easily defined.)

4.

4. __________________ isolating mechanisms include hybrid mortality and hybrid infertility.

Temporal

Sympatric

Prezygotic

Postzygotic

Mechanical

Correct. (See section 10·7 How do new species arise?)

Incorrect. (See section 10·7 How do new species arise?)

5.

5. Which of the following statements about speciation is CORRECT?

Hybrid offspring usually have higher evolutionary fitness than either parent species.

Prezygotic isolating mechanisms rarely play a role in preventing hybridization in birds.

Many plant species have arisen through hybridization, and the “daughter” species are often polyploid.

Sympatric speciation is thought to be the most common type of speciation in animals.

None of the above statements regarding speciation is correct.

Correct. (See section 10·7 How do new species arise?)

Incorrect. (See section 10·7 How do new species arise?)

Activity results are being submitted...