question

Information in the environment that causes an animal to react is

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A stimulus.

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The more complex an animal's response to a stimulus, the more likely it is that the animal has

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A highly developed nervous system with a large number of interneurons.

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Study Fugure 28-1. Which of the letters represents an interneuron?

answer

C

question

Which of the following represents a neural circuit that would be involved in the response to a stimulus?

answer

sensory cell =>sensory neuron =>interneuron=>motor neuron=>muscle

question

Of the following choices, the simplest form of nervous system is a

answer

Nerve net

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The ability to navigate, hunt, and communicate by electric current in water most likely helps make up for the effect of dark murky water on which sense?

answer

Vision

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Which of the following invertebrates has cerebral ganglia that are organized into a brain?

answer

Octopus

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A collection of sensory neurons and interneurons that are concentrated together is called

answer

Cephalization

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The part of your brain that is responsible for you responding to this question is the

answer

Cerebrum

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The part of the vertebrate nervous system that connects the brain and the rest of the body is called the

answer

Spinal cord

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The compound eyes of insects

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Detect color and form images.

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Which of following groups of animals rely on sensory cells rather than sensory tissues and organs?

answer

Tunicates

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If a butterfly touches sugar water with one of its legs, it usually will begin to feed. If it touches salt water, it usually will not feed. The most likely explanation for this difference in response is that butterflies

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Have chemical receptors for taste on their legs

question

What does molting enable anthropods to do?

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To grow

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Which of the following characteristics is associated only with an endoskeleton?

answer

It grows with the animal

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The hydostatic skeleton is a function of which feature of a cnidarian?

answer

Gastrovascular cavity

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Joints are a critical feature of both endoskeletons and exoskeletons because

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Joints provide flexibility and freedom of movement.

question

A tendon is a tough piece of connective tissue that

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Connects muscles to bones

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Which of the following statements describes how a muscle moves an anthropod leg?

answer

A muscle contracts, pulling on a tendon which is attached to the inside of the exoskeleton.

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Many fishes and snakes move by

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Contracting muscles in waves down the body, which bends the body to each side.

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Study Figure 28-2. The contraction of flexor muscles causes limbs to bend. The contraction of extensor muscles causes limbs to straighten. Based on this information, what is happening to the grasshopper's let at point A?

answer

The extensor muscle in the femur is contracting and straightening the leg.

question

Gametes are formed by

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Meiosis

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Parthenogenesis is a method of reproduction in which

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An egg develops without being fertilized by a sperm.

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Which cnidarian form is produced through asexual reproduction?

answer

Medusa

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A land snail is an animal that can produce both eggs and sperm at the same time. This animal

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Is a hermaphrodite

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In sponges, internal fertilization occurs when

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The sperm is taken in from the surrounding water

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External fertilization in chordates

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Must take place in water

question

Which of the following groups of animals only uses internal fertilization?

answer

Mammals

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Synchronizing gamete release during external fertilization increases the chance that

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Eggs will be fertilized

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The type of development shown in Figure 28-3 is the result of

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Incomplete metamorphosis

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The difference between an oviparous and ovoviviparous species is that

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Only ovoviviparous embryos can hatch within the mother's bodies.

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The number of young that are produced by an individual in a species is dependent upon

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The amount and length of maternal care required by the offspring.

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One difference between a nymph and a larva is that a nymph

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Resembles an adult of the same species, but a larva does not.

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The mammals whose offspring are little more than embryos are

answer

Marsupials

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The shells of amniotic eggs of birds, reptiles, and mammals all share which of the following characteristics

answer

they are waterproof

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One difference between monotremes and other types of mammals is that

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monotremes secrete milk through pores on the surface of the mothers abdomen

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One important characteristic shared by all embryos of land vertebrates and aquatic vertebrates is that

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they all develop in a watery environment

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Endrocrine glands are responsible for

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regulating body activites

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An animals immune system must be able to tell the difference between

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body cells and pathogens

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The system that helps all others maintain homeostasis by transporting oxygen, nutrients, carbon dioxide, and wastes is the

answer

circulatory system

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The endocrine system relies on which of the following body systems to communicate with the other systems in the body

answer

circulatory system

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One advantage to being a n ectotherm is that an ectotherm

answer

needs less energy to maintain homeostasis

question

A good way for a lizard to conserve its body heat in cold, windy weather would be to

answer

retreat to an underground burrow

question

Study figure 28-4. which of the following conclusions about body temperature can be drawn from this graph

answer

a lizards body temperature is about the same as the temperature of its environment

question

An endotherm is an animal that

answer

regulates its body temperature partly by generating its own body heat

Biology Test – Chapter 28 – Flashcards

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