Chapter 12. 12·11–12·12 Plants and animals have a love-hate relationship.

Show What You Know - Self Quiz

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

Instructions

Check your understanding of concepts from 12·11–12·12 Plants and animals have a love-hate relationship by answering the following questions.

1.

1. Chemical defenses are more common among plants than animals because:

plants cannot move to escape predators and so must develop other deterrents.

animals lack the amino acids necessary to biochemically synthesize many of the chemicals that plants use in their defense.

the cell wall can contain them more effectively than a simple plasma membrane.

mechanical defenses from predators can evolve only in animals.

plants have significantly more parasites than animals.

Correct. (See section 12·12 Unable to escape, plants must resist predation in other ways.)

Incorrect. (See section 12·12 Unable to escape, plants must resist predation in other ways.)

2.

2. Ovules become seeds and ovaries become:

shoots.

fruits.

cones.

flowers.

leaves.

Correct. (See section 12·11 Fleshy fruits are bribes that flowering plants pay animals to disperse their seeds.)

Incorrect. (See section 12·11 Fleshy fruits are bribes that flowering plants pay animals to disperse their seeds.)

3.

3. Why do insectivorous plants trap insects?

in order to get the pollen on insects and increase fertilization in the ovary

to get extra energy to supplement photosynthesis

to keep from being eaten themselves by those same insects

in order to ingest helpful bacteria on the insects

in order to gain more nitrogen

Correct. (See section 12·12 Unable to escape, plants must resist predation in other ways.)

Incorrect. (See section 12·12 Unable to escape, plants must resist predation in other ways.)

4.

4. Ovaries contain ovules. Ovaries mature into fruits and ovules mature into seeds. Using this information, determine which of the following “vegetables” is technically a fruit?

broccoli

tomato

potato

lettuce

celery

Correct. (See section 12·11 Fleshy fruits are bribes that flowering plants pay animals to disperse their seeds.)

Incorrect. (See section 12·11 Fleshy fruits are bribes that flowering plants pay animals to disperse their seeds.)

5.

5. When a seed breaks its dormancy and begins to grow and develop again, it enters into a state of:

undormantation.

reproduction.

fertilization.

fruitation.

germination.

Correct. (See section 12·11 Fleshy fruits are bribes that flowering plants pay animals to disperse their seeds.)

Incorrect. (See section 12·11 Fleshy fruits are bribes that flowering plants pay animals to disperse their seeds.)

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