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Question 17  (1 point)   Listen All primates have opposable...

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Question 17  (1 point)   Listen All primates have opposable...

Question 17 (1 point)



All primates have opposable thumbs. This means the thumbs can be touched

Question 17 options:

 to each of the other fingers on the opposite hand.
 to each of the other fingers on the same hand.
 to each of the toes on both feet.

Question 18 (3 points)



Explain segmentation and its significance for an animal such as a lobster.

Question 18 options:


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Question 19 (1 point)



Echidnas are spiny animals named after a character in Greek mythology who was half woman and half snake and perceived to have characteristics of both. Echidnas are covered in coarse hair or spines, they lay eggs, and the poorly developed young quickly attach to the mother's mammary glands after they hatch. Echidnas are

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Question 20 (1 point)



Basil will produce tiny flowers if it is not kept trimmed back. After these tiny flowers are pollinated, they produce tiny seeds encased in a papery covering. Basil is an example of a

Question 20 options:


Question 21 (1 point)



All Chordates possess the following characteristics:

Question 21 options:

 four legs, two eyes, bilateral symmetry, four-chambered heart
 bilateral symmetry, calcified skeleton, skull, and opposable thumbs
 backbone, spinal column, hair, mammary glands
 dorsal hollow nerve cord, notochord, pharyngeal gill slits, postanal tail

Question 22 (1 point)



Cutting down trees in a forest can affect the flow of a river. This is an example of a(n) ________ factor affecting a(n) ________ factor.

Question 22 options:

 biotic; biotic
 abiotic; biotic
 biotic; abiotic
 abiotic; abiotic

Question 23 (1 point)



Although the terms "climate" and "weather" are often used interchangeably, they are not the same thing. Climate differs from weather in that

Question 23 options:

 weather includes amount of rainfall per year and climate does not.
 climate is based on biomes, whereas weather is not.
 climate describes long-term patterns, whereas weather describes short-term fluctuations.
 climates are described in terms of long-term average temperature, and weather is described by other factors, such as prevailing winds.

Question 24 (1 point)



Which type of organism is used to produce bread, beer and wines?

Question 24 options:


Question 25 (2 points)



Why is a tree considered to be a carbon source some times and at other times a carbon sink?

Question 25 options:



Question 26 (1 point)



Structures produced by bacteria, but not archaeans, that are extremely resistant to boiling and freezing temperatures are

Question 26 options:


Question 27 (1 point)



It is particularly important for pregnant women to carefully wash their hands and take other precautions if they have a pet cat and are changing the litter box. An organism occasionally carried by cats, pig, and sheep can infect humans and pass from mother to child in utero, resulting in severe symptoms in the growing child. Microscopic examination of this organism shows a nucleus and other visible cellular organelles. It obtains all its nutrients from whichever host it currently occupies and can multiply by fission. This pathogenic organism is the

Question 27 options:

 plant, Plasmodium vivax.
 protist, Plasmodium vivax.
 plant, Toxoplasma gondii.
 protist, Toxoplama gondii.


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Answered by SuperSheep1779 on
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