In a plant, the cell walls act as a support system and provide shape for the plant.


Which structures in the human body are similar in function to the cell wall of a plant?


A.

ligaments and tendons


B.

arteries and veins


C.

muscles and joints


D.

bones and cartilage


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Which organ is being described in this statement?


If this organ malfunctions, all other body systems would be deprived of nutrients.


A.

urethra


B.

brain


C.

lungs


D.

stomach


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Which statement is correct about the growth and development of vertebrates?


A.

The larva will undergo many changes after leaving its cocoon.


B.

A fertilized egg will undergo many changes and become an embryo.


C.

The gamete will undergo many changes after the egg is fertilized.


D.

The pupa will undergo many changes within a cocoon.


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Which is produced immediately after a plant sperm cell fertilizes an egg cell?


A.

plant nutrients


B.

a zygote


C.

a spore


D.

sweet nectar


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Which terms are used for gametes that are needed for reproduction in vertebrate animals?


A.

sperm and eggs


B.

seeds and spores


C.

buds and offspring


D.

antibodies and pathogens


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Which activity distinguishes the larva stage from the pupa stage of an insect?


A.

locating shelter


B.

making its own food


C.

reproducing


D.

feeding

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Which statement describes the life cycle of a butterfly?


A.

sheds its exoskeleton


B.

incomplete metamorphosis


C.

stages of infancy and puberty


D.

complete metamorphosis