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March 29, 2017

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Identify the choice that best completes the statement or answers the question.

1.Studies conducted in England during the Industrial Revolution have shown that children born to poor families were, on average, shorter than those born to wealthier parents. The most likely explanation for this difference in height is a difference in (1 point)

A.nutrition.(i PICKED THIS)
B.family size.
C.genetic makeup.
D.genetic disorders.
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2.A woman with a genetic disease marries a man who does not carry the disease. It is not possible for their children to carry the disease. The disease must be (1 point)

A.sex-linked.
B.recessive.
C.dominant.(I PICKED THIS)
D.caused by an extra chromosome.
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3. Which of the following is an example of inbreeding? (1 point)

A.A farmer chooses the cows in his or her herd that produce the most milk and breeds only those cows.(I PICKED THIS)

B.A farmer chooses the cows in his or her herd that produce the most milk and breeds them with cows that get sick less often.

C.A farmer chooses the cows in his or her herd that produce the most milk and injects them with hormones that make them produce more milk.

D.A farmer chooses the cows in his or her herd that produce the most milk and pulls them out of the breeding stock.

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4.Scientists have inserted the gene for human insulin into bacteria. These bacteria make the insulin protein, which can then be used by people who have diabetes. This process is an example of (1 point)


A.hybridization.
B.gene therapy.
C.selective breeding.
D.genetic engineering.(I PICKED THIS)
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5. Which of the following correctly identifies the sequence of stages of human development? (1 point)

A.embryo zygote fetus embryo
B.blastocyst embryo fetus zygote
C.zygote blastocyst embryo fetus( I PICKED THIS)
D.blastocyst zygote embryo fetus
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6.The main purpose of the testes is to make (1 point)
A.eggs.
B.embryos.
C.sperm.(I PICKED THIS)
D.zygotes.

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7. Egg-laying land animals have evolved to produce eggs with tough shells to ensure that (1 point)

A.external fertilization can take place.
B.the egg and the sperm can fuse.
C.parental care is unnecessary.
D.the developing embryo does not dry out.(I PICKED THIS)

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8. An insect undergoes major changes in its life cycle—from egg, to larva, to pupa, to adult. This insect goes through (1 point)

A.metamorphosis.( I PICKED THIS)
B.budding.
C.alternation of generations.
D.internal fertilization.
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9.A woman gives birth to a son. What is the probability that her second child will be a girl? (1 point)

A.0 percent
B.25 percent
C.50 percent(I PICKED THIS)
D.100 percent
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10.Two identical flowering plants are planted in neighboring yards. One plant grows tall and healthy, producing numerous pink flowers. The other is small, has brown leaves, and never flowers. What could be the difference between the two plants? (1 point)

A.One of the plants is in the sporophyte generation, which does not flower, while the other is in the gametophyte generation.

B.One of the plants has access to the pollinator it needs, while the other does not.

C.One of the plants contains the genetic information that tells it to flower, while the other does not.

D.One of the plants has the nutrients and light it needs to grow and flower, while the other does not.( I PICKED THIS)
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11. Over time, a plant pollinated by a hummingbird has developed very long, tube-like flowers. Why might the flower have adapted in this way? (1 point)

A.The longer, tube-shaped flowers probably developed to keep the hummingbird from reaching and drinking the flower’s nectar.

B.The longer, tube-shaped flowers probably developed so that the hummingbird must stick its head in the flower to drink the nectar.( I PICKED THIS)###

C.The longer, tube-shaped flowers probably developed so that pollen would not fall into them as a hummingbird flies past.

D.The longer, tube-shaped flowers probably developed so that hummingbirds could land on them.

  • science(please check answers) - ,

    I'm pretty sure your answers 1-5 is correct. I belive #8 is correct.
    as for the rest....
    give me a chance to think:)

  • science(please check answers) - ,

    #9 is also correct, so is #6,and #7, 10 is D. and #11 would be B, so I belive all your answers are correct!

  • science(please check answers) - ,

    @princessanna are you done thinking??

  • science(please check answers) - ,

    im hoping this is right

  • science(please check answers) - ,

    When I do some research I will try to find some of the answers

  • science(please check answers) - ,

    how do the cherries on a cherry tree help the plant reproduce?

  • science(please check answers) - ,

    I DON'T EVEN KNOW THE ANSWERS !!!!!!! ARE THESE THE CORRECT ANSWERS? PLEASE REPLY IM FAILLING :(

  • science(please check answers) - ,

    @queenelsa #12 is b and #13 is d and yes they are all correct I finished and I got 'em all right!

  • science(please check answers) - ,

    number 2 is wrong the real answer is B.recessive.

  • science(please check answers) - ,

    but everything else was right

  • science(please check answers) - ,

    B. Recessive is CORRECT! Not dominant!

  • science(please check answers) - ,

    what grade are you in

  • Brainpop Science - ,

    The answer to question 2 would be "recessive".

  • science(please check answers) - ,

    You're only going to 11? what about 13-17?

  • science(please check answers) - ,

    what about for 14 15 16 17 18 and 19

  • science(please check answers) - ,

    This is so confusing! if you are in connexus as soon as a finish taking the test I will post the answers!

  • science(please check answers) - ,

    @Anonymous yes!

  • science(please check answers) - ,

    Me

  • science(please check answers) - ,

    help, please can I have the answers?

  • science(please check answers) - ,

    jj just look threw all the comments

  • science - ,

    If you are in connexus number 4 does not match this if you are in middle school 6th grade at connexus academy. After I finish my test I will post all the correct answers so you can get a 100% on your test and make your grade go up

  • science(please check answers) - ,

    12.How do Cherries on a cherry tree help the plant Produce? Answer is C, Pollen inside the cherries fertilizes ovules which produce seeds.

  • science - ,

    Okay my dudes, answers for connections reproduction and development of organisms unit test

    1: A
    2: B
    3: A
    4: C
    5: C
    6: C
    7: D
    8: B
    9: C
    10: D
    11: B
    12: B
    13: D

    **For 14-16 I'm not 100% sure but these are my answers

    14:budding
    15:courtship ritual
    16:umbilical cord

    I don't know 17-19 so I don't want to give out any wrong answers there but I took the test and got 12/13 [rest ungraded for now] because I picked A for 8 [again #8 is B]

    Ya welcome fam <3

  • science(please check answers) - ,

    thanks

  • science(please check answers) - ,

    yep I got it

  • science(please check answers) - ,

    thx hailhydra your da best

  • science(please check answers) - ,

    ^_^

  • science(please check answers) - ,

    Thanks

  • science(please check answers) - ,

    1: A
    2: B
    3: A
    4: C
    5: C
    6: C
    7: D
    8: B
    9: C
    10: D
    11: B
    12: B
    13: D
    These are all the right answers. PLease trust me I go to Connections Academy.
    My answers for 14-16 are:
    angiosperm
    courtship ritual and
    umbilical cord
    THe one for 17-19 are a little harder. I had to do lots of research for those. Thanks and goodnight!

  • science(please check answers) - ,

    Thanks I really needed this im failing.

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