Factors Affecting Biological Diversity-Standard Bio 4.4 — Unit test Answers

Which best explains why angiosperms are the most diverse and successful plant group today?

There are four steps in bacterial conjugation. The second step is missing in this list.1. Special sex pilus connects two cells.2.3. Each cell makes a complementary DNA strand.4. The cells separate.Which is the missing step for the process of conjugation described?

Which question is most likely to be found in a dichotomous key for identifying a tree by its leaves?

In what respect is a mycelium and a fruiting body similar?

Consider the classification levels of a human. EukaryaAnimaliaChordataMammaliaPrimatesHominidaeHomosapiensWhich is the most specific taxonomic level in the classification system above?

A scientist has correctly gone through all the possible steps in a dichotomous key, but has not identified an insect. Which most likely describes why he did not identify the insect?

Which reason best explains why bacteria are good at causing infections in other organisms?

A student studies a plant specimen. The student notices that the plant has seeds that are enclosed by a fruit. Which term can the student use to definitely describe the plant based on the evidence that they see?

Shelby is a plant breeder who is trying to identify the cause of a disease among a group of trees. She observes that the organism reproduces through spores and has reproductive structures that are shaped like a sac. Which type of fungus is it?

Dichotomous keys are constructed based on

Consider the diagram of the basic structure of bacteria.Which of the labeled structures in the diagram allows bacteria to infect organisms under harsh conditions, such as in the acidic stomach?

These statements compare and contrast Ascomycota and Basidiomycota.I. Some species in both groups can cause plant diseases.II. Species from both groups can be used in making bread rise.III. All species in both groups can be used as food.IV. Ascomycota produce spores in a sac-like structure; Basidiomycota produce spores in a club-shaped structure. Which of the statements are true?

Ceratium fusus is a protist that is found primarily in coastal waters, especially around the coast of the United Kingdom. These organisms are unique because they can undergo a special chemical reaction at night that helps defend them against predators. It provides defense by attracting larger predators that prey on the organisms that eat Ceratium fusus. Which characteristic of Ceratium fusus is being described?

Beans, peaches, and tomatoes are all in the same group of plants. What do these plants have in common?

Use this portion of a dichotomous key for tree identification to answer the question.1a. Needlelike leaf ® Step 101b. Broad leaf ® Step 22a. Compound leaf ® Step 32b. Simple leaf ® Step 77a. Leaf bases attached opposite each other on branch ® Step 87b. Leaf bases attached staggered on branch ® Step 118a. Leaves lobed ® Maple8b. Leaves not lobed ® Step 99a. Leaves heart shaped ® Catalpa9b. Leaves not heart shaped ® DogwoodWhich best describes dogwood leaves?